Repair and Diagnosis (Single Page)
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Quick Lookups- Accessories & Equipment
- Anti-Theft Systems
- Power Door Locks
- Description & Operation
- Component Locations
- Trouble Shooting
- System Tests
- Removal & Installation
- Wiring Diagrams
- Power Door Locks
- Cruise Control Systems
- Cruise Control System - Vacuum Servo (3.8L)
- Description
- Operation
- Adjustments
- Testing & Trouble Shooting
- Cruise Control System - Vacuum Servo (Except 3.8L)
- Description & Operation
- Adjustments
- Testing
- Diagnosis
- Wiring Diagrams
- Cruise Control System - Vacuum Servo (3.8L)
- Gauges & Instrument Panels
- Heated Glass/Defoggers
- Steering Column Switches
- Window Motors & Regulators
- Wiper/Washer Systems
- Wiper System/Washer System
- Description & Operation
- Trouble Shooting
- Testing
- Component Testing
- System Testing
- Notes
- Front Wipers Inoperative In All Modes
- Front Wipers Operate In High Speed Only
- Front Wipers Operate In Low Speed Only
- Front Wipers Run Continuously
- Front Wiper Pulse Delay Inoperative Or Operates Incorrectly
- Front Washer Inoperative
- Rear Wiper Inoperative In All Modes
- Rear Wiper Delay Operates Incorrectly Or Not At All
- Rear Washer Inoperative
- Removal & Installation
- Torque Specifications
- Wiring Diagrams
- Wiper System/Washer System
- Anti-Theft Systems
- Body & Frame
- Power Door Locks
- Description & Operation
- Component Locations
- Trouble Shooting
- System Tests
- Removal & Installation
- Wiring Diagrams
- Power Windows
- Power Door Locks
- Brakes
- Anti-Lock Brakes
- Anti-Lock Brake System
- Description
- Operation
- Bleeding Brake System
- Diagnosis & Testing
- Diagnostic Charts
- Notes
- Diagnostic Circuit Check
- Chart A, Abs Warning Light On Continuously, No Codes Stored
- Chart B, Abs Warning Light On Intermittently, No Codes Stored
- Code A011, Abs Warning Light CKT, Open Or Shorted To Ground
- Code A013, Abs Warning Light Circuit Shorted To Battery
- Code A014, Enable Relay Contacts Or Fuse Open
- Code A015, Enable Relay Contacts Shorted To Battery
- Code A016, Enable Relay Coil Circuit Open
- Code A017, Enable Relay Coil Circuit Shorted To Ground
- Code A018, Enable Relay Coil Circuit Shorted To Battery
- Code A021, Left Front Wheel Speed Is Zero
- Code A022, Right Front Wheel Speed Is Zero
- Code A023, Left Rear Wheel Speed Is Zero
- CODE A024, Right Rear Wheel Speed is Zero
- Code A025, Excessive Left Front Wheel Speed Variation
- Code A026, Excessive Right Front Wheel Speed Variation
- Code A027, Excessive Left Rear Wheel Speed Variation
- Code A028, Excessive Right Rear Wheel Speed Variation
- Code A031, Two Wheel Speeds Are Zero
- Code A032, Left Front Wheel Sens Shorted To Battery Or Ground
- Code A033, Right Front Wheel Sensor Shorted To Battery Or
- Code A034, Left Rear Wheel Sens Shorted To Battery Or Ground
- Code A035, Right Rear Wheel Sens Shorted To Battery Or Ground
- Code A036, System Voltage Low
- Code A037, System Voltage High
- Code A038, Left Front ESB Will Not Hold Motor
- Code A041, Right Front ESB Will Not Hold Motor
- Code A042, Rear Axle ESB Will Not Hold Motor
- Code A044, Left Front Channel Will Not Move
- Code A045, Right Front Channel Will Not Move
- Code A046, Rear Axle Channel Will Not Move
- Code A047, Left Front Motor Spins Freely
- Code A048, Right Front Motor Spins Freely
- Code A051, Rear Axle Motor Spins Freely
- Code A052, Left Front Channel In Release Too Long
- Code A053, Right Front Channel In Release Too Long
- Code A054, Rear Axle Channel In Release Too Long
- Code A055, Motor Driver Fault Detected
- Code A056, Left Front Motor Circuit Open
- Code A057, Left Front Motor Circuit Shorted To Ground
- Code A058, Left Front Motor CKT Shorted To Battery Or Motor
- Code A061, Right Front Motor Circuit Open
- Code A062, Right Front Motor Circuit Shorted To Ground
- Code A063, Right Front Motor Circuit Shorted To Battery
- Code A064, Rear Axle Motor Circuit Open
- Code A065, Rear Axle Motor Circuit Shorted To Ground
- Code A066, Rear Axle Motor Circuit Shorted To Battery Or
- Code A076, Left Front Solenoid Circuit Open Or Shorted To
- Code A077, Left Front Solenoid Circuit Shorted To Ground Or
- Code A078, Right Front Solenoid Circuit Open Or Shorted To
- Code A081, Right Front Solenoid Circuit Shorted To Ground Or
- Code A082, Calibration Memory Failure
- Code A086, Red Brake Warning Light Activated By EBCM
- Code A087, Red Brake Warning Light Circuit Open
- Code A088, Red Brake Warning Light Circuit Shorted To Battery
- Code A091, Open Brake Switch Contacts During Deceleration
- Code A092, Open Brake Switch Contacts When Abs Was Required
- Code A093 & Code A091 Or A092 Set In Last Or Current Ignition
- Code A094, Brake Switch Contacts Always Closed
- Code A095, Brake Switch Circuit Open
- Code A096, BRAKELIGHT Circuit Open
- Removal & Installation
- Abs Light Driver Module
- Electronic Brake Control Module (EBCM)
- Enable Relay
- Fluid Level Sensor
- Front Wheel Speed Sensor
- Hydraulic Modulator & Master Cylinder Assembly
- Front Speed Sensor Jumper Harness
- Hydraulic Modulator Gears
- Hydraulic Modulator Solenoid
- Rear Wheel Bearing & Speed Sensor Assembly
- Rear Wheel Speed Sensor Jumper Harness
- Torque Specifications
- Wiring Diagram
- Anti-Lock Brake System
- Mechanical - Hydraulic
- Disc Brake System & Drum Brake System
- Model Identification
- Description & Operation
- Bleeding Brake System
- Adjustments
- Testing
- Removal & Installation
- Automatic Parking Brake ("P" Series MOTORHOME)
- Front Brake Caliper
- Front Brake Rotor
- Rear Brake Caliper
- Rear Brake Rotor
- Rear Brake Drum
- Rear Brake Shoes
- Wheel Cylinder
- Master Cylinder
- Power Brake Booster
- Height-Sensing Proportioning Valve
- Combination Valve
- Rear Axle Bearing & Oil Seal (Semi-Floating Axle)
- Rear Axle Hub Bearings & Oil Seal (Full-Floating Axle)
- Overhaul
- Torque Specifications
- Drum Brake Specifications
- Disc Brake Specifications
- Disc Brake System & Drum Brake System
- Traction Control
- Anti-Lock Brake System
- Description
- Operation
- Bleeding Brake System
- Diagnosis & Testing
- Diagnostic Charts
- Notes
- Diagnostic Circuit Check
- Chart A, Abs Warning Light On Continuously, No Codes Stored
- Chart B, Abs Warning Light On Intermittently, No Codes Stored
- Code A011, Abs Warning Light CKT, Open Or Shorted To Ground
- Code A013, Abs Warning Light Circuit Shorted To Battery
- Code A014, Enable Relay Contacts Or Fuse Open
- Code A015, Enable Relay Contacts Shorted To Battery
- Code A016, Enable Relay Coil Circuit Open
- Code A017, Enable Relay Coil Circuit Shorted To Ground
- Code A018, Enable Relay Coil Circuit Shorted To Battery
- Code A021, Left Front Wheel Speed Is Zero
- Code A022, Right Front Wheel Speed Is Zero
- Code A023, Left Rear Wheel Speed Is Zero
- CODE A024, Right Rear Wheel Speed is Zero
- Code A025, Excessive Left Front Wheel Speed Variation
- Code A026, Excessive Right Front Wheel Speed Variation
- Code A027, Excessive Left Rear Wheel Speed Variation
- Code A028, Excessive Right Rear Wheel Speed Variation
- Code A031, Two Wheel Speeds Are Zero
- Code A032, Left Front Wheel Sens Shorted To Battery Or Ground
- Code A033, Right Front Wheel Sensor Shorted To Battery Or
- Code A034, Left Rear Wheel Sens Shorted To Battery Or Ground
- Code A035, Right Rear Wheel Sens Shorted To Battery Or Ground
- Code A036, System Voltage Low
- Code A037, System Voltage High
- Code A038, Left Front ESB Will Not Hold Motor
- Code A041, Right Front ESB Will Not Hold Motor
- Code A042, Rear Axle ESB Will Not Hold Motor
- Code A044, Left Front Channel Will Not Move
- Code A045, Right Front Channel Will Not Move
- Code A046, Rear Axle Channel Will Not Move
- Code A047, Left Front Motor Spins Freely
- Code A048, Right Front Motor Spins Freely
- Code A051, Rear Axle Motor Spins Freely
- Code A052, Left Front Channel In Release Too Long
- Code A053, Right Front Channel In Release Too Long
- Code A054, Rear Axle Channel In Release Too Long
- Code A055, Motor Driver Fault Detected
- Code A056, Left Front Motor Circuit Open
- Code A057, Left Front Motor Circuit Shorted To Ground
- Code A058, Left Front Motor CKT Shorted To Battery Or Motor
- Code A061, Right Front Motor Circuit Open
- Code A062, Right Front Motor Circuit Shorted To Ground
- Code A063, Right Front Motor Circuit Shorted To Battery
- Code A064, Rear Axle Motor Circuit Open
- Code A065, Rear Axle Motor Circuit Shorted To Ground
- Code A066, Rear Axle Motor Circuit Shorted To Battery Or
- Code A076, Left Front Solenoid Circuit Open Or Shorted To
- Code A077, Left Front Solenoid Circuit Shorted To Ground Or
- Code A078, Right Front Solenoid Circuit Open Or Shorted To
- Code A081, Right Front Solenoid Circuit Shorted To Ground Or
- Code A082, Calibration Memory Failure
- Code A086, Red Brake Warning Light Activated By EBCM
- Code A087, Red Brake Warning Light Circuit Open
- Code A088, Red Brake Warning Light Circuit Shorted To Battery
- Code A091, Open Brake Switch Contacts During Deceleration
- Code A092, Open Brake Switch Contacts When Abs Was Required
- Code A093 & Code A091 Or A092 Set In Last Or Current Ignition
- Code A094, Brake Switch Contacts Always Closed
- Code A095, Brake Switch Circuit Open
- Code A096, BRAKELIGHT Circuit Open
- Removal & Installation
- Abs Light Driver Module
- Electronic Brake Control Module (EBCM)
- Enable Relay
- Fluid Level Sensor
- Front Wheel Speed Sensor
- Hydraulic Modulator & Master Cylinder Assembly
- Front Speed Sensor Jumper Harness
- Hydraulic Modulator Gears
- Hydraulic Modulator Solenoid
- Rear Wheel Bearing & Speed Sensor Assembly
- Rear Wheel Speed Sensor Jumper Harness
- Torque Specifications
- Wiring Diagram
- Anti-Lock Brake System
- Anti-Lock Brakes
- Drivelines & Axles
- Electrical
- Charging Systems
- Alternator & Regulator
- Description (Alternator & Regulator)
- Operation (Alternator & Regulator)
- Adjustments (Alternator & Regulator)
- Trouble Shooting (Alternator & Regulator)
- On-Vehicle Testing (Alternator & Regulator)
- Bench Testing (Alternator & Regulator)
- Removal & Installation (Alternator & Regulator)
- Overhaul (Alternator & Regulator)
- Alternator Specifications
- Torque Specifications (Alternator & Regulator)
- Alternator & Regulator
- Component Locations
- Fuses & Circuit Breakers
- Fuses & Circuit Breakers
- Fuse Panel Location
- Circuit Breaker/Relay Panel
- Fuse Panel Identification (1990 Trans Sport)
- Fuse Panel Identification (1990 Lumina APV & Silhouette)
- Fuse Panel Identification (1991 Models)
- Fuse Panel Identification (1992-95 Models With 3.1L Engine)
- Fuse Panel Identification (1992-95 Models With 3.8L Engine)
- Fuses & Circuit Breakers
- Gauges
- Starter
- Wiring Diagrams
- Charging Systems
- Engine Mechanical
- Accessory Drive Belts
- Auxiliary Emission Control Systems
- EGR Function Testing
- Emission Control System Visual Inspection Procedures - General Information
- * Please Read This First *
- Emission Control Labels
- Emission Control Visual Inspection
- Notes
- Positive Crankcase Ventilation (PCV)
- Thermostatic Air Cleaner (TAC)
- Fuel Evaporative System (EVAP)
- Catalytic Converters
- Fill Pipe RESTRICTOR (Fr)
- Exhaust Gas RECIRCULATION (EGR) System
- Spark Controls (SPK)
- Air Injection System (AIS)
- Oxygen Sensor (O2)
- Computerized Engine Controls (CEC)
- Early Fuel Evaporation (EFE)
- Emission Maintenance Reminder Light (EMR) (If Equipped)
- Malfunction Indicator Light (Mil)
- Engine Cooling Fan
- Cooling System (Mechanical)
- Mechanical
- 3.1L V6 - VIN [D]
- Engine Identification
- Adjustments
- Troubleshooting
- Removal & Installation
- Overhaul
- Lubrication
- Torque Specifications
- Engine Specifications
- 3.8L V6 - VIN [L]
- Engine Identification
- Adjustments
- Troubleshooting
- Removal & Installation
- Overhaul
- Lubrication
- Torque Specifications
- Engine Specifications
- 3.1L V6 - VIN [D]
- Starter
- Engine Performance
- Engine Controls - Adjustments
- Application
- Emissions
- EGR Function Testing - General Motors Trucks
- Emission Applications
- Emission Control Abbreviations
- State Emission Standards - Diesel
- State Emission Standards - Gas
- ALASKA
- ARIZONA
- CALIFORNIA
- Colorado
- CONNECTICUT
- DELAWARE
- District Of COLUMBIA
- GEORGIA
- IDAHO
- ILLINOIS
- INDIANA
- KENTUCKY
- MARYLAND
- MASSACHUSETTS
- MISSOURI
- NEVADA
- New Jersey
- New MEXICO
- New YORK
- North CAROLINA
- OHIO
- OREGON
- PENNSYLVANIA
- RHODE Island
- TENNESSEE
- TEXAS
- UTAH
- VIRGINIA
- WASHINGTON
- WISCONSIN
- U. S. EPA ASM2525 & ASM5015 Start-Up Emission Standards
- U. S. EPA Revised Final ASM Emission Standards (ASM5015 & ASM2525)
- U.S. EPA Im240 Emission Standards
- Engine Controls - Pin Voltage Charts
- Remove, Overhaul & Install
- Engine Controls - Remove/Install/Overhaul
- Introduction
- On-Vehicle Adjustments
- Electronic Control Module (ECM)
- Electronic Spark Control (ESC) Module
- Fuel System (Gasoline)
- Fuel System (Diesel)
- Ignition System
- Throttle Position Sensor (TPS)
- Oxygen (O2) Sensor
- Turbocharger
- Torque Specifications
- Engine Controls - Remove/Install/Overhaul
- Sensor Range Charts
- Engine Controls - Specifications
- System
- Engine Controls - Basic Testing
- Engine Controls - System/Component Tests
- Model Identification
- Introduction
- Air Induction Systems
- Computerized Engine Controls
- Engine Sensors & Switches
- A/C On Switch/System Test
- Brake Switch
- Coolant Temperature Sensor (Cts)
- Knock Sensor
- Manifold Absolute Pressure (Map) Sensor
- Manifold Air Temperature (Mat) Sensor
- Oxygen (O2) Sensor
- Oxygen Sensor Heating Element (4.3L Turbo PFI)
- Park/Neutral (P/N) Switch
- Power Steering Pressure Switch (2.5L)
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensor (Pm Generator)
- Relays, Solenoids, Motors & Modules
- Fuel System (Gasoline)
- Idle Air Control - Vehicles Without 4L80-E Transmission
- Fuel System (Diesel)
- Ignition System
- Emission Systems & Sub-Systems (Gasoline)
- Emission Systems & Sub-Systems (Diesel)
- Miscellaneous ECM Controls
- Notes
- Transmission (C-8)
- A/C Clutch (C-10) & Electric Cooling Fan (C-12)
- A/C Clutch (C-10)
- Cooling Fan (C-12)
- CHART C-10, A/C CLUTCH CONTROL CKT DIAGNOSIS 2.5/2.8L (1 Of 2)
- CHART C-10, A/C CLUTCH CONTROL CKT DIAGNOSIS 2.5/2.8L (2 Of 2)
- CHART C-10, A/C CLUTCH CONTROL CIRCUIT DIAGNOSIS (FRONT A/C ONLY) 3.1L (1 of 2)
- Chart C-10, A/C Clutch Control Circuit Diagnosis (Rear A/C Only) (2 Of 2) 3.1L
- Chart C-10, A/C Control Diagnosis (A/T) (1 Of 2) 4.3L Turbo PFI
- Chart C-10, A/C Clutch Control Diagnosis (A/T) (2 Of 2) 4.3L Turbo PFI
- Chart C-12, Cooling Fan Circuit Diagnosis (1 Of 2) 3.1L
- Chart C-12, Cooling Fan Circuit Diagnosis (2 Of 2) 3.1L
- Chart C-12A, Cooling Fan Circuit Diagnosis (1 Of 4) 3.8L
- Chart C-12B, Cooling Fan, On At All Times (2 Of 4) 3.8L
- Chart C-12C, Cooling Fan, No Puller Fan (3 Of 4) 3.8L
- Chart C-12D, Cooling Fan, No Pusher Fan (4 Of 4) 3.8L
- Intake Manifold Tuning Valve Assembly
- Component Locations
- Engine Controls - Tests W/Codes - Gasoline
- Introduction
- Self-Diagnostic System
- Trouble Codes
- Code 13, Open Oxygen Sensor Circuit
- Code 14, Coolant Sensor Signal Voltage Low
- Code 15, Coolant Sensor Signal Voltage High
- Code 16, System Voltage High/Low 3.8L
- CODE 17, rpm signal problem 3.8l
- CODE 18, CAM/CRANK ERROR 3.8l
- Code 21, TPS Signal Voltage High
- Code 22, TPS Signal Voltage Low
- Code 24, Vehicle Speed Sensor (3.1L)
- Code 24, Vehicle Speed Sensor (VSS) 3.8L
- Code 26, Quad-Driver Circuit 3.8L (1 Of 3)
- Code 26, Quad-Driver Circuit 3.8L (2 Of 3)
- Code 26, Quad-Driver Circuit 3.8L (3 Of 3)
- Code 31, Park/Neutral Switch Circuit 3.8L
- Code 32, EGR System Error (3.1L)
- Code 33, Map Sensor Signal Voltage High
- Code 34, Map Sensor Signal Voltage Low
- Code 34, MAF Sensor Signal Voltage Low 3.8L
- Code 36, Shift Control Problem (3.8L)
- Code 38, Brake Switch Circuit (3.8L)
- Code 39, TCC Circuit (3.8L)
- Code 41, Cam Sensor Circuit (3.8L)
- Code 42, Electronic Spark Timing (3.1L)
- Code 42, Electronic Spark Timing (3.8L)
- Code 43, Electronic Spark Control (3.1L)
- Code 44, Lean Exhaust Indication
- Code 45, Rich Exhaust Indication
- Code 51, Faulty Prom/Mem-Cal
- Code 52, Faulty CALPAK (Except 2.5L)
- Code 55, ECM/Pcm Error (Except 2.5L)
- Code 54, Fuel Pump Circuit
- Code 56, Quad-Driver "B" Fault 3.8L (1 Of 2)
- Quad-Driver Related Symptoms
- Code 56, Quad-Driver "B" Fault 3.8L (2 Of 2)
- Code 61, Cruise Vent Solenoid 3.8L
- Code 62, Cruise Vacuum Solenoid 3.8L
- Code 63, Cruise System Problem 3.8L
- Code 65, Cruise Servo Position 3.8L
- Code 66, Low A/C Refrigerant Charge 3.8L
- Code 67, Cruise Engage Switches 3.8L
- Code 68, Cruise System Problem Using Tech 1 (3.8L)
- Code 69, A/C Head Pressure Switch 3.8L
- Engine Controls - Tests W/O Codes
- Introduction
- Symptoms (Gasoline)
- Notes
- How To Use This Section
- Hard Start
- Stalls After Starting
- Hesitation, Sag Or Stumble
- Vehicle Surges
- Lack Of Power Or Sluggish
- Engine Backfires
- Cuts Out, Misses
- Rough, Unstable Or Incorrect Idle
- Engine Will Not Idle
- Poor Fuel Economy
- Engine Dieseling/Run-On
- Detonation/Spark Knock
- Excessive Exhaust Emission (Odors)
- Symptoms (Diesel)
- Engine Will Not Start
- Engine Stalls At Idle
- Engine Starts, Idles Rough Without Unusual Noise Or Smoke
- Engine Starts And Idles With Excessive Noise And/Or Smoke
- Engine Idles But Misfires Above Idle
- Engine Will Not Idle
- Fuel Leaks With No Other Engine Malfunction
- Low Engine Power
- "Rapping" Noise From Cylinders
- Excessive Noise With Black Smoke
- Engine Will Not Shut Off With Key
- Turbocharger Trouble Shooting
- INTERMITTENTS
- Testing & Diagnosis
- Engine Controls - Basic Testing
- Engine Controls - System/Component Tests
- Model Identification
- Introduction
- Air Induction Systems
- Computerized Engine Controls
- Engine Sensors & Switches
- A/C On Switch/System Test
- Brake Switch
- Coolant Temperature Sensor (Cts)
- Knock Sensor
- Manifold Absolute Pressure (Map) Sensor
- Manifold Air Temperature (Mat) Sensor
- Oxygen (O2) Sensor
- Oxygen Sensor Heating Element (4.3L Turbo PFI)
- Park/Neutral (P/N) Switch
- Power Steering Pressure Switch (2.5L)
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensor (Pm Generator)
- Relays, Solenoids, Motors & Modules
- Fuel System (Gasoline)
- Idle Air Control - Vehicles Without 4L80-E Transmission
- Fuel System (Diesel)
- Ignition System
- Emission Systems & Sub-Systems (Gasoline)
- Emission Systems & Sub-Systems (Diesel)
- Miscellaneous ECM Controls
- Notes
- Transmission (C-8)
- A/C Clutch (C-10) & Electric Cooling Fan (C-12)
- A/C Clutch (C-10)
- Cooling Fan (C-12)
- CHART C-10, A/C CLUTCH CONTROL CKT DIAGNOSIS 2.5/2.8L (1 Of 2)
- CHART C-10, A/C CLUTCH CONTROL CKT DIAGNOSIS 2.5/2.8L (2 Of 2)
- CHART C-10, A/C CLUTCH CONTROL CIRCUIT DIAGNOSIS (FRONT A/C ONLY) 3.1L (1 of 2)
- Chart C-10, A/C Clutch Control Circuit Diagnosis (Rear A/C Only) (2 Of 2) 3.1L
- Chart C-10, A/C Control Diagnosis (A/T) (1 Of 2) 4.3L Turbo PFI
- Chart C-10, A/C Clutch Control Diagnosis (A/T) (2 Of 2) 4.3L Turbo PFI
- Chart C-12, Cooling Fan Circuit Diagnosis (1 Of 2) 3.1L
- Chart C-12, Cooling Fan Circuit Diagnosis (2 Of 2) 3.1L
- Chart C-12A, Cooling Fan Circuit Diagnosis (1 Of 4) 3.8L
- Chart C-12B, Cooling Fan, On At All Times (2 Of 4) 3.8L
- Chart C-12C, Cooling Fan, No Puller Fan (3 Of 4) 3.8L
- Chart C-12D, Cooling Fan, No Pusher Fan (4 Of 4) 3.8L
- Intake Manifold Tuning Valve Assembly
- Component Locations
- Engine Controls - Tests W/Codes - Gasoline
- Introduction
- Self-Diagnostic System
- Trouble Codes
- Code 13, Open Oxygen Sensor Circuit
- Code 14, Coolant Sensor Signal Voltage Low
- Code 15, Coolant Sensor Signal Voltage High
- Code 16, System Voltage High/Low 3.8L
- CODE 17, rpm signal problem 3.8l
- CODE 18, CAM/CRANK ERROR 3.8l
- Code 21, TPS Signal Voltage High
- Code 22, TPS Signal Voltage Low
- Code 24, Vehicle Speed Sensor (3.1L)
- Code 24, Vehicle Speed Sensor (VSS) 3.8L
- Code 26, Quad-Driver Circuit 3.8L (1 Of 3)
- Code 26, Quad-Driver Circuit 3.8L (2 Of 3)
- Code 26, Quad-Driver Circuit 3.8L (3 Of 3)
- Code 31, Park/Neutral Switch Circuit 3.8L
- Code 32, EGR System Error (3.1L)
- Code 33, Map Sensor Signal Voltage High
- Code 34, Map Sensor Signal Voltage Low
- Code 34, MAF Sensor Signal Voltage Low 3.8L
- Code 36, Shift Control Problem (3.8L)
- Code 38, Brake Switch Circuit (3.8L)
- Code 39, TCC Circuit (3.8L)
- Code 41, Cam Sensor Circuit (3.8L)
- Code 42, Electronic Spark Timing (3.1L)
- Code 42, Electronic Spark Timing (3.8L)
- Code 43, Electronic Spark Control (3.1L)
- Code 44, Lean Exhaust Indication
- Code 45, Rich Exhaust Indication
- Code 51, Faulty Prom/Mem-Cal
- Code 52, Faulty CALPAK (Except 2.5L)
- Code 55, ECM/Pcm Error (Except 2.5L)
- Code 54, Fuel Pump Circuit
- Code 56, Quad-Driver "B" Fault 3.8L (1 Of 2)
- Quad-Driver Related Symptoms
- Code 56, Quad-Driver "B" Fault 3.8L (2 Of 2)
- Code 61, Cruise Vent Solenoid 3.8L
- Code 62, Cruise Vacuum Solenoid 3.8L
- Code 63, Cruise System Problem 3.8L
- Code 65, Cruise Servo Position 3.8L
- Code 66, Low A/C Refrigerant Charge 3.8L
- Code 67, Cruise Engage Switches 3.8L
- Code 68, Cruise System Problem Using Tech 1 (3.8L)
- Code 69, A/C Head Pressure Switch 3.8L
- Engine Controls - Tests W/O Codes
- Introduction
- Symptoms (Gasoline)
- Notes
- How To Use This Section
- Hard Start
- Stalls After Starting
- Hesitation, Sag Or Stumble
- Vehicle Surges
- Lack Of Power Or Sluggish
- Engine Backfires
- Cuts Out, Misses
- Rough, Unstable Or Incorrect Idle
- Engine Will Not Idle
- Poor Fuel Economy
- Engine Dieseling/Run-On
- Detonation/Spark Knock
- Excessive Exhaust Emission (Odors)
- Symptoms (Diesel)
- Engine Will Not Start
- Engine Stalls At Idle
- Engine Starts, Idles Rough Without Unusual Noise Or Smoke
- Engine Starts And Idles With Excessive Noise And/Or Smoke
- Engine Idles But Misfires Above Idle
- Engine Will Not Idle
- Fuel Leaks With No Other Engine Malfunction
- Low Engine Power
- "Rapping" Noise From Cylinders
- Excessive Noise With Black Smoke
- Engine Will Not Shut Off With Key
- Turbocharger Trouble Shooting
- INTERMITTENTS
- Theory and Operation
- Engine Controls - Theory & Operation
- Introduction
- Air Induction System
- Computerized Engine Controls (Gasoline)
- Notes
- Electronic Control Module (ECM)
- Input Devices
- Notes
- A/C On (A/C Request) Signal
- Battery Voltage
- Brake Switch Feedback
- Coolant Temperature Sensor (CTS)
- Crankshaft Position Sensor
- Cranking Signal
- Digital Ratio Adapter Controller (DRAC)
- Fuel Pump Feedback
- Gear Switches
- Knock Sensor
- Manifold Absolute Pressure (MAP) Sensor (Except 3.8L)
- Manifold Air Temperature (MAT) Sensor (2.5L & 4.3L Turbo)
- Mass Airflow (MAF) Sensor (3.8L)
- Oxygen (O2) Sensor
- Park/Neutral (P/N) Switch
- Power Steering (P/S) Pressure Switch (2.5L)
- Pressure Switch Manifold (PSM) (4L80-E Transmission)
- RPM Reference Signal
- Throttle Position Sensor (TPS)
- Transmission Temperature Sensor (TTS) (4L80-E Transmission)
- Vehicle Speed Sensor (VSS)
- Output Signals
- Notes
- A/C Clutch Relay
- Air Injection Control Solenoid
- Charge Air Cooler Pump Relay (4.3L Turbo)
- Computer Controlled Coil Ignition (C(3)I)
- Cooling Fan Relay (3.1L)
- SERVICE ENGINE SOON Light
- EGR Control Solenoid Valve
- ESC Timing Retard
- EVRV Solenoid
- Fuel Injectors
- Fuel Module
- Fuel Pump & Fuel Pump Relay
- HEI-EST Ignition
- Idle Air Control (IAC) Valve
- Self-Diagnostics
- Serial Data
- Shift Solenoids (4L80-E Transmission)
- Torque Converter Clutch
- Transmission Shift Light (Manual Transmission)
- Turbo Boost Relay (4.3L Turbo)
- Wastegate Solenoid (4.3L Turbo)
- Computerized Engine Controls
- Fuel System (Gasoline)
- Fuel System (Diesel)
- Ignition System (Gasoline)
- Ignition Timing Control Systems (Gasoline)
- Emission Systems (Gasoline)
- Emission Systems (Diesel)
- Self-Diagnostic System
- Miscellaneous ECM Controls
- Engine Controls - Theory & Operation
- Vacuum Diagrams
- Wiring Diagrams
- General Information
- Abbreviations
- Basic Trouble Shooting
- Basic Trouble Shooting - General Information
- Commonly Used Abbreviations - General Information
- Emission Control Abbreviations
- Engine Performance - Trouble Shooting - General Information
- Brakes
- Anti-Lock Brake Safety Precautions - General Information
- Map - Brake Systems
- Brake Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Accelerometers
- Accumulators
- Anchor Pins
- Anti-Lock Brake Control Assembly(Module)
- Anti-Lock Brake Controller
- Anti-Lock Brake Systems
- Axle Seal
- Backing Plates
- Bleeder Screw
- Brake Abs Active Light (Blue)
- Brake Fluid
- Brake Friction Material
- Brake On - Off Switch
- Brake Pads
- Brake Pedals
- Brake Shoe Hardware
- Brake Shoes
- Brake Stoplight Switches
- Brake Warning Light (Amber)
- Brake Warning Light (Red)
- Bulb Sockets
- Bulbs And LEDS
- Caliper Hardware
- Caliper Mounting Pin
- Caliper Piston
- Caliper Shim
- Caliper Slider Pin (Bolt) Dust Boot
- Caliper Slider Pin (Bolt)
- Calipers
- Combination Valve
- Controllers
- Digital Ratio Axle Controllers And Buffers (Drab And Dram)
- Disable Switches
- Drums
- Electrical Brake Pumps
- Electrical Park Motor
- Electrical Pumps And Motors
- Electro-Magnetic Interference
- Electronic Brake Control Modulator
- Electronic Brake Distribution
- Electronic Brake Traction Control Module
- Electronic Controllers
- Electronic Traction Control
- External Brake Cable
- Flow Control Valve
- Fluid Level Sensor Switches
- Fluid
- Four Wheel Drive Switches
- Friction Material
- G Sensors
- Gaskets
- Gravitational Switches
- Grease Seal
- Height Sensing Proportioning Valve
- High Pressure Accumulator
- Hoses
- Hub
- Hydraulic Control Unit
- Hydraulic Modulators
- Hydro-Boosters
- Hydro-Electric Boosters (POWERMASTER)
- Ignition Disable Switches
- Lamp Driver Relay
- Lateral Acceleration Switches
- LEDS
- Lenses
- Low Pressure Accumulator
- Lug Nut
- Master Cylinder Cover Gasket
- Master Cylinders
- Modulators
- Motor Pack
- Motors
- Pads
- Parking Brake Cable
- Parking Brake Mechanism
- Parking Brake Shoes
- Parking Brake Switches
- Parking Brake Systems
- Pedal Travel Switches
- Pedals
- Power Distribution Center
- POWERMASTER
- Pressure Differential Switches
- Pressure Switches
- Pressure Transducers
- Proportioning Valve
- Pumps
- Relays
- RELUCTOR (Speed) Ring
- Rotors
- Self-Adjusting Systems
- Shoe Hardware
- Shoes
- Sockets
- Speed Sensor (RELUCTOR) Ring
- Speed Sensors (Electronic Wheel And Vehicle)
- Star Wheel
- Steel Brake Lines
- Stoplight Switches
- Stroke Sensor
- Switches
- Tires
- Tone Ring
- Toothed Rings (Tone Wheel)
- Traction Control System (TCS)
- Transfer Tubes
- Vacuum Boosters
- Vacuum Hoses
- Valves
- Wear Indicator
- Wheel Attachment Hardware
- Wheel Bearings, Races And Seals
- Wheel Cylinders
- Wiring Harnesses
- Yaw Rate Sensor
- Brake System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Brake Systems
- Map - Routine Inspection Reference Guide
- Routine Inspection Reference Guide
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Maintenance Overview
- Antifreeze/Coolant
- Visual Inspection
- Radiator Cap Test
- Engine Fan
- Cooling System Power Flush And Refill
- Belts (Except Timing Belts)
- Belt TENSIONER
- Automatic Transmission Fluid
- Automatic Transmission Fluid Exchange & Filter Replacement
- Engine Oil
- Air Filters
- Cabin Air Filter
- Brake Fluid
- Battery
- Battery Cables
- Power Steering
- Power Steering Fluid
- Wiper Blades
- Routine Inspection CHECKSHEET
- Routine Inspection - UICS
- Brake Systems
- Drivetrain And Transmission
- Notes
- Automatic Transmission Fluid
- Clutch Master Cylinders
- Cooler Lines
- Coolers
- Differential Fluid
- Drain Plugs And Gaskets
- Filters And Screens
- Fluids And Lubricants
- Hoses, Lines, And Tubes
- Hydraulic Fluid
- Lubricants
- Manual Transmission Fluid
- Mounts (Engine, Transaxle And Transmission)
- Transfer Case Fluid
- Vacuum Hoses
- Electrical Systems
- Engine Performance And Maintenance
- Notes
- Accessory Belts
- Air Filter Elements
- Air Filter Gaskets
- Air Filter Housings And Gaskets
- Air Pump Belts
- Batteries
- Battery Connectors
- Belt Idler Assemblies (Accessory And Cam Belts)
- Belt TENSIONERS (Accessory And Cam Belt)
- Chemical Engine DECARBONIZATION
- Combustion Chamber Cleaning
- Coolant Recovery Tanks
- Coolant
- Distributor Caps
- Distributor Rotors
- Engine Cooling Systems
- Engine DECARBONIZATION
- Engine Oil Drain Plugs And Gaskets
- Engine Oil Filters And Canisters
- Engine Oil
- Fuel Filters
- Fuel Injector Cleaning
- Fuel Injectors
- Fuel System Cleaning Service
- Hose Clamps
- Hose Connectors
- Hose Couplers
- Hoses And Tubes (Fuel Lines, Radiator, Vacuum, By-Pass, Heater, Recovery Tank And Oil Coolers)
- Ignition Wires (Secondary)
- Intake Cleaning
- O2 Sensors
- PCV Breather Elements
- PCV Valves
- Radiator Caps And Pressurized Expansion Tank Caps
- Spark Plugs
- Thermostats And Housings
- Throttle Body Cleaning
- Timing Belts
- Vacuum Hoses, Tubes And Connections (Non-Metallic)
- Exhaust Systems
- Heating, Ventilation And Air Conditioning Systems
- Steering And Suspension, Wheel Alignment, Wheels And Tires
- Wheel & Tire Supplement
- Reason Code Explanation
- Automotive Terminology & Definitions
- Routine Inspection Reference Guide
- Check Lists
- Computer Relearn Procedures
- Driveline/Axles
- Drive Axle Noise Diagnosis - General Information
- Gear Tooth Contact Patterns - General Information
- Map - Drive Train & Transmission
- Drive Train & Transmission Systems
- Drivetrain And Transmission
- Notes
- Actuators (Electrical)
- Actuators (Vacuum)
- Automatic Transmission / Transaxle Assemblies/CVTS
- Automatic Transmission Fluid
- Axles
- Bearings And Races
- Bell Cranks
- Bell Housings
- Bushings (External)
- Cables (Speedometer)
- Cables (TV, Detent And Shift)
- Carrier Bearings
- Clutch Cables And Cable Housings
- Clutch Discs (Manual Transmissions)
- Clutch Forks
- Clutch Linkages (Mechanical)
- Clutch Master Cylinders
- Clutch Pedals
- Clutch Pivots
- Clutch Pressure Plates
- Clutch Release Bearings
- Clutch Slave Cylinders (Concentric)
- Clutch Slave Cylinders (Conventional Or External)
- Companion Flanges
- Connectors
- Cooler Bypass Valves
- Cooler Lines
- Coolers
- CV Joints
- Differential And Final Drive Assemblies
- Differential Fluid
- Dip Stick Tubes
- Dip Sticks (Fluid Level Indicators)
- Dowel Pins, Guides And Pilot Holes
- Drain Plugs And Gaskets
- Drive Shaft Flanges
- Drive Shafts And Half Shafts
- Dust Boots
- Engine Mounts
- Exciter Rings
- Filler Tubes
- Filters And Screens
- Flanges
- Flex Plates
- Fluid Level Indicators
- Fluids And Lubricants
- Flywheels
- Force Motors
- Gaskets
- Guides
- Half Shafts
- Hoses, Lines, And Tubes
- Housings (Bell, Case, Tail(Extension) And Auxiliary)
- Hydraulic Fluid
- Intermediate Shaft Support Bearings
- Key Interlock Systems
- Limited Slips
- Lines
- Linkages (External)
- Locking Hub Assemblies
- Locking Hub Control Knobs
- Lubricants
- Manual Transmission Fluid
- Manual Transmission/Transaxle Assemblies
- Metal Clad Seals
- METALASTIC Joints
- Modulator Pins
- Modulators
- Mounts (Engine, Transaxle And Transmission)
- Odometer Drives (Mechanical)
- Odometer Heads (Mechanical)
- Oil Pans
- Pans
- Pilot Holes
- Pressure Plates
- Pressure Switches
- Races
- Rubber Joints (METALASTIC)
- Screens
- Seals (Metal Clad)
- Seals
- Selector Interlock Systems
- Sensors
- Servos
- Shift Interlock Systems (Selector And Key Interlock Systems)
- Side Covers
- Slip Yokes
- Solenoids
- Speed Sensors (Electronic Wheel And Vehicle)
- Speedometer- Driven Gear Housing
- Speedometer/Odometer Drives (Mechanical)
- Speedometer/Odometer Heads (Mechanical)
- Speedometers/Odometers (Electronic)
- Switches
- Tone Wheels
- Toothed Rings (Tone Wheel)
- Torque Converters
- Transaxle Mounts
- Transducers (Transmission)
- Transfer Case Assemblies
- Transfer Case Fluid
- Transmission Coolers
- Transmission Mounts
- Transmission Pans
- Transmission Range Indicators (PRNDL)
- Tubes
- Universal Joints (CARDAN Or Cross Type)
- Vacuum Controls
- Vacuum Hoses
- Vacuum Motors
- Vacuum-Operated Switches
- Vehicle Speed Sensors
- Vents
- Vibration Dampers
- Wheel Attachment Hardware
- Wheel Speed Sensors
- Wiring Harnesses And Connectors
- Yokes And Slip Yokes
- Reason Code Explanation
- Automotive Terminology & Definitions
- Trouble Shooting - Clutches - General Information
- Electrical
- Map - Electrical Systems
- Electrical Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Actuator Motors (Electric)
- Actuator Motors (Vacuum)
- Air Bags
- Alternators And Generators
- Amplifiers
- Antennas
- Batteries
- Battery Cables, Wires And Connectors
- Battery Cables
- Battery Trays And Hold Down Hardware
- Battery Wires
- Belts
- Bulb Sockets
- Bulbs, Sealed Beams And LEDS
- Cd Players
- Cigarette Lighter Assemblies
- Circuit Breakers
- Clutch Switches
- Connectors
- Control Modules
- Cruise Control Brake Switches
- Cruise Control Cables
- Cruise Control Clutch Switches
- Cruise Control Linkages And Cables
- Cruise Control Reservoirs
- Cruise Control Tubes
- Cruise Control Vacuum Dump Release Valves
- Cruise Control Vacuum Hoses, Tubes And
- Cruise Control Vehicle Speed Sensors
- Defoggers
- Defrosters
- Delays
- Dimmers
- Electric Heaters
- Equalizers
- Fuse Blocks
- Fuse Boxes And Blocks
- Fuses, Fusible Links And Circuit Breakers
- Fusible Links
- Gauges
- Generators
- Ground Cables And Straps
- Ground Straps
- Headlight Adjusters
- Heating Elements (Defrosters, Defoggers, Electric Heaters And Seats)
- Horns And Sirens
- Ignition Switches
- Indicator Lights
- Keyless Entry Keypads And Transmitters
- Keyless Entry Transmitters
- LEDS
- Lenses
- Microphones
- Mirrors (ELECTROCHROMATIC And Heated)
- Motors
- Neutral Safety Switches
- Odometers, Speedometers And Tachometers (Cable Driven)
- Odometers
- Power Distribution Center
- Pulleys
- Receivers, Amplifiers, Equalizers And Sub-Woofer Volume Controls
- Relay Boxes
- Relays
- Sealed Beams
- Seat Heaters
- Security Alarm Sensors
- Sirens
- Solenoids
- Speakers And Microphones
- Speedometer And Tachometer Linkages And Cables
- Speedometer Cables
- Speedometers
- Starters
- Sub-Woofer Volume Control
- Switches
- Tachometer Cables
- Tachometers
- Tape Players And Cd Players
- TENSIONERS
- Timers
- Transceivers
- Transducers
- Vacuum Accumulators (Reservoirs)
- Voltage Regulators
- Washer Fluid Level Senders
- Washer Pumps
- Wiper Arms And Blades
- Wiper Blades
- Wiper Hoses And Nozzles
- Wiper Linkages
- Wiper Nozzles
- Wiper Pump Reservoirs
- Wiring Harnesses And Connectors
- Battery, Starting & Charging System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Electrical Systems
- Using lemon2025'S System Wiring Diagrams
- Map - Electrical Systems
- Engine
- Engine Overhaul Procedures - General Information
- * Please Read This First *
- Description
- Engine Identification
- Inspection Procedures
- Cleaning Procedures
- Component Cleaning
- Cylinder Head Replacement
- Cylinder Head Overhaul
- Pistons, Connecting Rods & Bearings
- Crankshaft & Main Bearings
- Camshaft
- Timing Chains & Belts
- Timing Gears
- Oil Pump
- Break-In Procedure
- General Cooling System Service - General Information
- Engine Overhaul Procedures - General Information
- Engine Performance
- Electrostatic Discharge Warning - General Information
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Map - Engine Performance & Maintenance
- Engine Performance And Maintenance (Including Exhaust Systems)
- Engine Performance & Maintenance CHECKSHEET
- Engine Performance And Maintenance
- Notes
- Accelerator Pedal Position Sensor
- Accessory Belts
- Accessory Pulleys
- Air Conditioning Cycling Switches
- Air Conditioning Pressure Sensors
- Air Ducts And Tubes
- Air Filter Elements
- Air Filter Gaskets
- Air Filter Housings And Gaskets
- Air Fuel Ratio Sensors
- Air Injection Control Solenoids
- Air Plenums
- Air Pump Belts
- Air Pumps (Electric Driven)
- Air Tubes
- Aspirator, Check And DECEL Valves
- Baffles
- Ballast Primary Supply Resistor Wires
- Ballast Resistors And Primary Supply Resistors
- Barometric Pressure Sensors
- Batteries
- Battery Cables, Wires And Connectors
- Battery Connectors
- Battery Trays And Hold Down Hardware
- Battery Wires
- Belt Idler Assemblies (Accessory And Cam Belts)
- Belt TENSIONERS (Accessory And Cam Belt)
- Belt-Driven Air Pumps
- Boost Control Mechanism
- Camshaft Position Sensors
- Carburetors And Chokes
- Casting Core Plugs And Expansion Plugs
- Charge Air Coolers ""INTERCOOLERS"" (CAC)
- Check Valves
- Chemical Engine DECARBONIZATION
- Chokes
- Clutch Pedal Position Switches
- Cold Start Injectors
- Combustion Chamber Cleaning
- Connectors
- Coolant Recovery Tanks
- Coolant
- Cooling Fan Motor Modules
- Cooling Fan Motor Relays And Modules
- Cooling Fan Motor Resistors
- Cooling Fan Motor Sensors And Switches
- Cooling Fan Motor Switches
- Cooling Fan Motors
- Crankshaft Position Sensors
- Cylinder Deactivation Solenoid
- Cylinder Head Assemblies
- DECEL Valves
- Deflectors
- Dip Stick Tubes
- Dip Sticks And Tubes
- Distributor Advances And Retarders (Mechanical And Vacuum)
- Distributor Boots And Shields
- Distributor Caps
- Distributor Retarders (Mechanical And Vacuum)
- Distributor Rotors
- Distributor Shields
- Distributors
- Early Fuel Evaporation Valves (Heat Riser Assemblies)
- EGR Coolers
- EGR Exhaust Manifold Passages
- EGR Intake And Exhaust Manifold Passages
- EGR Plates And Coolers
- Electronic Spark Control Modules
- Electronic Transmission Control Devices
- Electronic Transmission Feedback Devices
- Engine Coolant Temperature Sensors
- Engine Cooling Systems
- Engine Covers (Oil Pan, Valve Cover, Timing Cover)
- Engine DECARBONIZATION
- Engine Oil Canisters
- Engine Oil Coolers (External)
- Engine Oil Drain Plugs And Gaskets
- Engine Oil Filters And Canisters
- Engine Oil Gaskets
- Engine Oil Pressure Gauges (Mechanical)
- Engine Oil
- Evaporative Emissions (EVAP) Canister Filters
- Evaporative Emissions (EVAP) Canister Purge Devices
- Evaporative Emissions (EVAP) Canisters
- Evaporative Emissions (EVAP) Feedback Devices
- Exhaust Gas RECIRCULATION Devices
- Exhaust Gas RECIRCULATION Feedback Devices
- Expansion Plugs
- Fan Control Sensor
- Fuel Accumulators And Dampers
- Fuel And Cold Start Injectors
- Fuel Caps
- Fuel Dampers
- Fuel Delivery Check Valves
- Fuel Distributors (BOSCH Cis)
- Fuel Filler Necks And RESTRICTORS
- Fuel Filters
- Fuel Injector Cleaning
- Fuel Injectors
- Fuel Level Senders
- Fuel Pressure Regulators
- Fuel Pumps (In-Tank, External, Electrical Or Mechanical)
- Fuel Rails
- Fuel RESTRICTORS
- Fuel System Cleaning Service
- Fuel Tanks
- Fuel
- Gaskets
- Grommets (Valve Cover)
- Harmonic Dampers
- Heater Control Valves
- Heater Cores
- Hose Clamps
- Hose Connectors
- Hose Couplers
- Hoses And Tube Couplers, Connectors And Clamps
- Hoses And Tubes (Fuel Lines, Radiator, Vacuum, By-Pass, Heater, Recovery Tank And Oil Coolers)
- Housings
- Idle Air Controls
- Idle Speed Control Actuators
- Ignition Boots
- Ignition Coil Towers
- Ignition Coils
- Ignition Control Modules (ICM)
- Ignition Switches
- Ignition Terminals
- Ignition Wires (Secondary)
- Inertia Fuel Shut-Off Switches
- Intake Air Temperature Sensors
- Intake Cleaning
- Intake Manifolds
- In-Tank Fuel Strainers
- INTERCOOLERS
- Knock Sensors
- Liquid Vapor Separators
- Long Block Assemblies
- Manifold Absolute Pressure (Map) Sensors
- Mass Air Flow (MAF) Sensors
- Metal Air Manifolds And Pipes
- Metal Air Pipes
- Mix Control Solenoids
- Motor Mounts
- O2 Sensors
- Oil Pans
- Oil Pressure Sending Units
- Oil Pump Pick-Up Screens
- Oil Pumps
- O-Rings, Gaskets, Seals And Spring Locks
- Park Neutral Position Switches
- PCV Breather Elements
- PCV Orifices
- PCV Valves
- Pick-Up Assemblies (Includes Magnetic, Hall Effect And Optical)
- Power Steering Pressure Sensors
- Powertrain Control Modules (Pcm) And Prom
- Powertrain Control Prom
- Pressurized Expansion Tank Caps
- Radiator / Cooling Fan Blades
- Radiator / Cooling Fan Clutches
- Radiator Caps And Pressurized Expansion Tank Caps
- Radiators
- Roll Over Valves
- Sealing Compounds
- Seals
- Secondary Air Injection System Management Devices
- Sensors
- Short Block Assemblies
- Shrouds, Baffles And Deflectors
- Spark Plugs
- Spring Locks
- Super Chargers
- Switches
- Thermal Vacuum Valves
- Thermostatic Air Door Assemblies
- Thermostats And Housings
- Throttle Bodies
- Throttle Body Cleaning
- Throttle Cables
- Throttle Linkages And Cables
- Throttle Position Sensors
- Throttle Position Switches
- Timing Belt Sprockets
- Timing Belts
- Timing Covers
- Torque Struts
- Transmission Range Switches
- Tube Clamps
- Tube Connectors
- Tube Couplers
- Tubes
- Turbo Chargers
- Vacuum Connections
- Vacuum Hoses, Tubes And Connections (Non-Metallic)
- Vacuum Regulator Solenoids
- Vacuum Tubes
- Valve Covers
- Vehicle Speed Senors
- Volume Air Flow Sensors
- Waste Gate And Boost Control Mechanisms
- Waste Gate Control Solenoids
- Water Pumps (Electric)
- Water Pumps (Non-Electric)
- Wiring Harnesses And Connectors
- Reason Code Explanation
- Automotive Terminology & Definitions
- Parasitic Load Explanation & Test Procedures - General Information
- State Emission Standards - Diesel
- State Emission Standards - Gas
- ALASKA
- ARIZONA
- CALIFORNIA
- Colorado
- CONNECTICUT
- DELAWARE
- District Of COLUMBIA
- GEORGIA
- IDAHO
- ILLINOIS
- INDIANA
- KENTUCKY
- MARYLAND
- MASSACHUSETTS
- MISSOURI
- NEVADA
- New Jersey
- New MEXICO
- New YORK
- North CAROLINA
- OHIO
- OREGON
- PENNSYLVANIA
- RHODE Island
- TENNESSEE
- TEXAS
- UTAH
- VIRGINIA
- WASHINGTON
- WISCONSIN
- U. S. EPA ASM2525 & ASM5015 Start-Up Emission Standards
- U. S. EPA Revised Final ASM Emission Standards (ASM5015 & ASM2525)
- U.S. EPA Im240 Emission Standards
- Waveforms - Injector Pattern Tutorial - General Information
- * Please Read This First *
- Purpose Of This Article
- Is A Lab Scope Necessary?
- The Two Types Of Injector Drivers
- The Two Ways Injector Circuits Are Wired
- Interpreting Injector Waveforms
- Current Waveform Samples
- Notes
- Example #1 - Voltage Controlled Driver
- Example #2 - Voltage Controlled Driver
- Example #3 - Voltage Controlled Driver
- Example #4 - Current Controlled Driver
- Example #5 - Current Controlled Driver
- Example #6 - Current Controlled Driver
- Example #7 - Current Controlled Driver
- Example #8 - Current Controlled Driver
- Voltage Waveform Samples
- Notes
- Example #1 - Voltage Controlled Driver
- Example #2 - Voltage Controlled Driver
- Example #3 - Voltage Controlled Driver
- Example #4 - Current Controlled Driver
- Example #5 - Current Controlled Driver
- Example #6 - Current Controlled Driver
- Example #7 - Current Controlled Driver
- Example #8 - Current Controlled Driver
- Map - Exhaust Systems
- Exhaust Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Catalytic Converters
- Exhaust And Tail Pipes
- Exhaust Connections
- Hangers
- Heat Risers (Mechanical EFE Devices)
- Heat Shields
- Manifolds (Cast And Tube Type)
- Mechanical EFE Devices
- Muffler Valve
- Mufflers And Resonators
- Reason Code Explanation
- Exhaust Systems
- Heating, Ventilation & A/C (HVAC)
- Map - Heating, Ventilation, & Air Conditioning
- Heating, Ventilation & Air Conditioning Systems
- Notes
- Map Standards Of Service
- The Map Process - Overview
- The Map Process - Overview Of Service Requirements And Suggestions
- Accumulators
- Actuators (Electrical)
- Actuators (Vacuum)
- Air Conditioning Fittings
- Air Conditioning Hoses
- Air Conditioning Metal Lines
- Air Control Doors
- Air Dams (External)
- Air Distribution System
- Belts
- Blend Doors
- Blower Fans (Blower Wheel Or Squirrel Cage)
- Blower Motors
- Blower Resistors
- Blower Switches
- Cabin Air Filters
- Circuit Breakers
- Compressor Clutch Assemblies
- Compressors
- Condenser Air Seals
- Condenser Fan Motors
- Condensers
- Connectors
- Control Cables
- Control Heads (Function Selectors)
- Control Linkages
- Control Modules
- Coolant
- Cooling Fan Blades
- Cooling Fan Clutches
- Cooling Fan Motors
- Evaporator Drain Tubes
- Evaporator Filters
- Evaporator Pressure Regulators (EPRS)
- Evaporators
- Expansion Valves
- Function Selectors
- Fuses, Fusible Links And Circuit Breakers
- Fusible Links
- Gaskets
- Heater Cases
- Heater Control Valves
- Heater Cores
- Heater Hoses
- High Pressure Relief Valves (HPRV)
- Idlers
- In-Line Filters
- Metal Fittings
- Metal Lines
- Mix And Air Control Doors (Blend Doors)
- ORIFACE Tubes
- O-Rings
- Pilot-Operated Absolutes (POAS)
- Plenums
- Pressure Control Valves
- Pressure Sensors
- Pulleys
- Radiators
- Receiver-DRIERS
- Refrigerant Oil
- Refrigerant
- Relays
- Seals
- Service Ports
- Spring Lock Couplings
- Suction Throttling Valves (STVS)
- Switches (Electrical)
- TENSIONERS
- Thermistors And Pressure Sensors
- Thermostats And Housings
- Vacuum Hoses And Tubes
- Vacuum Reservoirs
- Vacuum Tubes
- Valves In Receiver (VIRS)
- Water Pumps (Electric Auxiliary)
- Wiring Harnesses And Connectors
- Heating, Ventilation & Air Conditioning System CHECKSHEET
- Reason Code Explanation
- Automotive Terminology & Definitions
- Heating, Ventilation & Air Conditioning Systems
- Map - Heating, Ventilation, & Air Conditioning
- Identification
- Metric Conversions
- Maintenance Reminder Light (Reset Procedures)
- Engine Oil Replacement Reminder
- Notes
- Engine Oil Replacement Reminder Reset - Procedure 01
- Engine Oil Replacement Reminder Reset - Procedure 02
- Engine Oil Replacement Reminder Reset - Procedure 03
- Engine Oil Replacement Reminder Reset - Procedure 04
- Engine Oil Replacement Reminder Reset - Procedure 05
- Engine Oil Replacement Reminder Reset - Procedure 06
- Engine Oil Replacement Reminder Reset - Procedure 07
- Engine Oil Replacement Reminder Reset - Procedure 08
- Engine Oil Replacement Reminder Reset - Procedure 09
- Engine Oil Replacement Reminder Reset - Procedure 10
- Engine Oil Replacement Reminder Reset - Procedure 11
- Engine Oil Replacement Reminder Reset - Procedure 12
- Engine Oil Replacement Reminder Reset - Procedure 13
- Engine Oil Replacement Reminder Reset - Procedure 14
- Engine Oil Replacement Reminder Reset - Procedure 15
- Engine Oil Replacement Reminder Reset - Procedure 16
- Engine Oil Replacement Reminder Reset - Procedure 17
- Engine Oil Replacement Reminder Reset - Procedure 18
- Engine Oil Replacement Reminder Reset - Procedure 19
- Engine Oil Replacement Reminder Reset - Procedure 20
- Engine Oil Replacement Reminder Reset - Procedure 21
- Engine Oil Replacement Reminder Reset - Procedure 22
- Engine Oil Replacement Reminder Reset - Procedure 23
- Engine Oil Replacement Reminder Reset - Procedure 24
- Engine Oil Replacement Reminder Reset - Procedure 25
- Engine Oil Replacement Reminder Reset - Procedure 26
- Engine Oil Replacement Reminder Reset - Procedure 27
- Engine Oil Replacement Reminder Reset - Procedure 28
- Engine Oil Replacement Reminder Reset - Procedure 29
- Engine Oil Replacement Reminder Reset - Procedure 30
- Engine Oil Replacement Reminder Reset - Procedure 31
- Engine Oil Replacement Reminder Reset - Procedure 32
- Engine Oil Replacement Reminder Reset - Procedure 33
- Engine Oil Replacement Reminder Reset - Procedure 34
- Engine Oil Replacement Reminder Reset - Procedure 35
- Engine Oil Replacement Reminder Reset - Procedure 36
- Engine Oil Replacement Reminder Reset - Procedure 37
- Emissions Maintenance Reminder (Reminder Flag)
- Emissions Maintenance Reminder (Warning Light)
- Emissions Maintenance Reminder (Check Engine Light)
- Diesel Fuel Filter Replacement Reminder
- Maintenance Service Reminder
- Timing Belt Replacement Reminder
- Transmission Fluid Replacement Reminder
- Tire Pressure Monitor System Reminder
- Notes
- TPMS Reminder Reset - Procedure 01
- TPMS Reminder Reset - Procedure 02
- TPMS Reminder Reset - Procedure 03
- TPMS Reminder Reset - Procedure 04
- TPMS Reminder Reset - Procedure 05
- TPMS Reminder Reset - Procedure 06
- TPMS Reminder Reset - Procedure 07
- TPMS Reminder Reset - Procedure 08
- TPMS Reminder Reset - Procedure 09
- TPMS Reminder Reset - Procedure 10
- TPMS Reminder Reset - Procedure 11
- TPMS Reminder Reset - Procedure 12
- TPMS Reminder Reset - Procedure 13
- TPMS Reminder Reset - Procedure 14
- TPMS Reminder Reset - Procedure 15
- TPMS Reminder Reset - Procedure 16
- TPMS Reminder Reset - Procedure 17
- TPMS Reminder Reset - Procedure 18
- TPMS Reminder Reset - Procedure 19
- TPMS Reminder Reset - Procedure 20
- TPMS Reminder Reset - Procedure 21
- TPMS Reminder Reset - Procedure 22
- TPMS Reminder Reset - Procedure 23
- TPMS Reminder Reset - Procedure 24
- TPMS Reminder Reset - Procedure 25
- TPMS Reminder Reset - Procedure 26
- TPMS Reminder Reset - Procedure 27
- TPMS Reminder Reset - Procedure 28
- TPMS Reminder Reset - Procedure 29
- TPMS Reminder Reset - Procedure 30
- TPMS Reminder Reset - Procedure 31
- TPMS Reminder Reset - Procedure 32
- TPMS Reminder Reset - Procedure 33
- TPMS Reminder Reset - Procedure 34
- TPMS Reminder Reset - Procedure 35
- TPMS Reminder Reset - Procedure 36
- TPMS Reminder Reset - Procedure 37
- Engine Oil Replacement Reminder
- RPO Codes
- RPO Code Description (Codes 001-19F)
- RPO Code Description (Codes 19H-2EL)
- RPO Code Description (Codes 2F1-44I)
- RPO Code Description (Codes 44L-5J9)
- RPO Code Description (Codes 5K0-6FF)
- RPO Code Description (Codes 6FG-76A)
- RPO Code Description (Codes 76D-7XD)
- RPO Code Description (Codes 7XF-8M0)
- RPO Code Description (Codes 8M1-9C0)
- RPO Code Description (Codes 9C1-A0F)
- RPO Code Description (Codes A0G-Ar4)
- RPO Code Description (Codes Ar5-BCP)
- RPO Code Description (Codes BCQ-C12)
- RPO Code Description (Codes C13-Cur)
- RPO Code Description (Codes Cut-Dir)
- RPO Code Description (Codes Dr7-EHE)
- RPO Code Description (Codes EHF-F5P)
- RPO Code Description (Codes F5Q-G1V)
- RPO Code Description (Codes G1W-HFN)
- RPO Code Description (Codes HFO-JRG)
- RPO Code Description (Codes JRH-KLY)
- RPO Code Description (Codes KLZ-LQX)
- RPO Code Description (Codes LQY-MW9)
- RPO Code Description (Codes MWE-ODK)
- RPO Code Description (Codes ODL-Ora)
- RPO Code Description (Codes Orb-PDE)
- RPO Code Description (Codes PDF-QH6)
- RPO Code Description (Codes QH7-R8D)
- RPO Code Description (Codes R8E-T07)
- RPO Code Description (Codes T08-TJ0)
- RPO Code Description (Codes TJ1-U10)
- RPO Code Description (Codes U11-Us9)
- RPO Code Description (Codes USB-VG9)
- RPO Code Description (Codes VGA-W5Y)
- RPO Code Description (Codes W5Z-XE3)
- RPO Code Description (Codes XE4-Y9Z)
- RPO Code Description (Codes Ya2-ZD9)
- RPO Code Description (Codes ZDE-ZZZ)
- Steering
- Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
- Steering & Suspension Systems
- Wheel And Tire
- Steering & Suspension CHECKSHEET
- Wheels & Tires CHECKSHEET
- Steering And Suspension, Wheel Alignment, Wheels And Tires
- Notes
- Active Handling
- Active Suspension Control Modules
- Active Variable Ratio Steering
- Active Yaw Control
- Adaptive Cruise Control
- Advance TRAC
- Air Bags
- Air Ride Control Modules
- Air Ride Suspension Torsion Springs (Counter Balancing)
- Air Ride Suspension
- Air Ride Tubes
- Air Shocks And Air Struts
- Air Spring Valves
- Air Springs
- Air Suspension Control Valves
- Air Suspension DRIERS
- Axle Acceleration Sensor
- Ball Joints
- Body Acceleration Sensor
- Bushings
- Center Links
- Compressors
- Continuous Damping Control
- Control Arm Shafts
- Control Arms
- Control Modules
- Distance Regulation Control Module
- Distance Regulation Sensor
- Drag Links
- Dynamic Stability Control
- Dynamic Stability Traction Control
- Electronic Ride Control Shocks And Struts
- Electronic Stability Control
- Electronic Suspension System
- Flex Couplers
- Gaskets
- Height Sensors
- Hydraulic Hoses
- Hydraulic Power Steering Pumps
- Hydraulic Suspension Hoses
- Hydraulic Suspension Pumps
- Idler Arms
- Intermediate Shaft U-Joints
- King Pins
- Modules
- Pitman Arms
- Power Steering Belts
- Power Steering Coolers
- Power Steering Fluid
- Power Steering Hoses
- Power Steering Lines (Steel)
- Power Steering Pumps - Electric
- Power Steering Pumps
- Radar Sensor
- Radius Arms
- Relay Rods
- Relays
- Sensors
- Shock Absorbers, Strut Cartridges And Strut Assemblies
- Spindles
- Springs, Coil, Leaf And Torsion Bars
- STABILITRAC
- Stability Management System
- Steering Angle Sensor
- Steering Arms
- Steering Couplers
- Steering Dampers
- Steering Gears (Except Rack And Pinion)
- Steering Gears, Rack And Pinion
- Steering Knuckles
- Strike Out Bumpers
- Strut Bearing Plate Assemblies
- Strut Rods
- Suspension Pumps (Hydraulic)
- Sway Bar Links
- Sway Bar Mounting Bushings
- Sway Bars
- Switches
- Tie Rod Ends (Inner And Outer)
- Tire Pressure Monitoring System
- Tire Pressure Sensors
- Tires
- Torque Sensor
- Torsion Springs
- Track Bar Bushings
- Track Bars
- Trailing Arm Bushings
- Trailing Arms
- Valve Stems
- Vehicle Dynamics Control
- Vehicle Speed Sensor
- Vehicle Stability Assist
- Vehicle Stability/Skid Control
- Warning Lamps
- Wheel Alignment
- Wheel Attachment Hardware
- Wheel Bearings, Races And Seals
- Wheels (Rims)
- Wiring Harnesses And Connectors
- Reason Code Explanation
- Automotive Terminology & Definitions
- Wheel Alignment Theory & Operation - General Information
- Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
- Trouble Shooting - Manual Transmission - General Information
- Heating, Ventilation & A/C (HVAC)
- General Servicing
- A/C Compressor Oil Checking
- Compressor Applications (Passenger Cars)
- Compressor Applications (Light Trucks & Vans)
- Body Code Designations (Passenger Cars)
- Body Code Designations Trucks & Vans
- Refrigerant Oil
- Servicing Precautions
- Checking Compressor Oil
- Passenger Car Refrigerant Oil & R-12 Capacities
- Light Truck & Van Refrigerant Oil & R-12 Capacity
- A/C Compressor Overhaul
- A/C System General Servicing
- Safety Precautions - Using R-12 Refrigerant
- Safety Precautions - Using Individual R-12 Cans
- Safety Precautions - Multi-Can Dispensing Valves
- Can Tap Installation
- Sight Glass Indicators
- 1992 Passenger Car Service Valves Location
- 1992 Truck/Van Service Valves Location
- Stem-Type Valve Operation
- Back-Seated (Operating) Position
- Mid (Test) Position
- Front-Seated (Off) Position
- SCHRADER-Type Valve Operation
- Special Valve Connectors
- Manifold Gauge Set
- Connecting Gauge Set
- Purging Test Hoses
- Stabilizing A/C System
- Pressure Gauge Readings
- Excessive Moisture Gauge Readings
- Defective Thermostatic Switch Gauge Readings
- MISADJUSTED Thermostatic Switch Gauge Readings
- Defective Clutch Cycling Switch Pressure Gauge Readings
- Low R-12 Charge Gauge Readings
- Very Low R-12 Charge Gauge Readings
- Orifice Tube Plugged Gauge Readings
- Expansion Or "H" Valve Stuck Closed
- Expansion Or "H" Valve Stuck Open Gauge Readings
- Compressor Malfunction Gauge Readings
- Condenser Malfunction Or R-12 Overcharge Gauge Readings
- Orifice Tube Replacement
- 1992 Orifice Tube Location & Tool Id Table
- Refrigerant Recovery
- Discharging A/C System
- Flushing A/C System
- Charging A/C System
- A/C System Precautions
- Before Opening The System
- Discharging A/C System
- Disconnecting Lines & Fittings
- Component Replacement
- Using R-12 Refrigerant - Safety Precautions
- Using Individual R-12 Cans
- Multi-Can Dispensing Valves
- Can Tap Installation Flat Type Seal Cans
- Screw Type Seal Cans
- Connecting Lines & Fittings
- Placing System In Operation
- Compressor Removal Information - Isolation Method
- Compressor Removal Information - Discharge Method
- A/C System Specifications
- A/C Compressor Oil Checking
- HVAC Control Systems
- A/C-Heater System - Manual
- A/C System Specifications
- Description
- Operation
- Adjustments
- Trouble Shooting
- Notes
- Blower Motor Inoperative Or Will Not Operate At Low Speed
- Blower Goes To High Speed When A/C Control Panel Is Activated
- Blower Motor Operates At Low, But Not At Medium Speeds
- Blower Operates At Low & Medium Speeds, But Not At High Speed
- Auxiliary Blower Motor Inoperative At One Or More Speeds
- Blower Motor & Auxiliary Blower Motor Inoperative
- Rear Aux Blower Switch Inoperative (Front Switch OK)
- Temperature Lever Causes No Change In Airflow At Outlets
- Airflow From Outlets Is Incorrect
- Rear A/C Is Not Cold
- Removal & Installation
- Vacuum Hose Diagram(S)
- Wiring Diagrams
- A/C-Heater System - Manual Trouble Shooting
- Refrigerant System Diagnosis
- Trouble Shooting Charts
- CCOT System, Insufficient Cooling Chart "A"
- CCOT System, Insufficient Cooling Chart "B"
- CCOT System, Insufficient Cooling Chart "C"
- CCOT System, Insufficient Cooling Chart "D"
- CCOT System, Insufficient Cooling Chart "E"
- V5 System, Preliminary Checks Step 1
- V5 System, Checking Refrigerant Charge Step 2
- V5 System, Checking Compressor Clutch Engagement Step 3
- V5 System, Checking System Performance Step 4 (1 Of 2)
- V5 System, Checking System Performance Step 4 (2 Of 2)
- V5 System, Gray Area Diagnosis & Service Step 5
- V5 System, Striped Area Diagnosis & Service Step 6
- V5 System, Control Valve Diagnosis Step 7
- Air Conditioning Performance Test
- Operational Testing
- Electrical Trouble Shooting
- Heater System
- Description
- Operation
- Adjustments
- Trouble Shooting
- Blower Inoperative, No Operation At Low Speed
- Blower Constantly Runs At High Speed
- Blower Operates At Low, Not Medium Speeds
- Blower Operates At Low & Medium, Not High
- Aux Blower INOP Or One, Two Speeds Inoperative
- Main Blower & Auxiliary Blower Inoperative
- Temp Lever Does Not Change Temp
- Air Flow From Outlets Is Incorrect
- Vacuum Control Diagnosis
- Removal & Installation
- Wiring Diagram
- A/C-Heater System - Manual
- General Servicing
- Maintenance
- Procedures
- Maintenance Information
- Model Identification
- Maintenance Service Information
- Service Point Locations
- Service Labor Times
- Wheel & Tire Specifications
- Battery Specifications
- Cautions & Warnings
- Supplemental Restraint System (Air Bag)
- Air Conditioning Servicing
- Anti-Lock Brake System
- Replacing Blown Fuses
- Battery Warning
- Brake Pad Wear Indicator
- Catalytic Converter
- Coolant (DEX-Cool 1995-96 Models)
- Coolant (Propylene-Glycol Formulations)
- Electrostatic Discharge Sensitive (ESD) Parts
- Fuel System Service
- Halogen Bulbs
- Methanol Gasoline
- Radiator Cap
- Radiator Fan
- Spark Plugs
- Warranty Information
- Fuses & Circuit Breakers
- Circuit Breaker/Relay Fuse Panel Location - 1990-95
- Circuit Breaker/Relay Panel
- Circuit Breaker/Relay Panel - 1990-95
- Fuse Panel Identification - 1990 Trans Sport
- Fuse Panel Identification - 1990 Lumina APV & Silhouette
- Fuse Panel Identification - 1991 Models
- Instrument Panel Fuse Identification - 92-96 With 3.1L V6
- Fuse Panel Identification (1992-96 Models With 3.8L V6)
- Service Indicator & Warning Lights
- Maintenance Information
- Procedures
- Steering
- Manual Steering
- Power Steering
- Steering Column
- Suspension
- Electronic Suspension
- Suspension - Rear Electronic Level Control
- Description
- Operation
- Adjustments
- Testing
- System Operational Test
- System Leak Test
- Compressor Performance Test
- Compressor/Drier Leak Test
- Height Sensor Operation Test
- Sensor Actuator Arm Test
- Inflator Switch Does Not Activate Compressor Motor
- Inflator Switch Activates Compressor Motor, But High Pressure Air Is Not Available At Air Hose
- Inflator Switch Activates Compressor Motor, But Will Not Turn Compressor Motor "Off"
- Compressor Motor Does Not Turn "On" To Raise Rear Of Vehicle, But Inflator Switch Operates Normally
- Compressor Motor Does Not Turn "On" To Raise Rear Of Vehicle
- Electronic Level Control System Does Not Vent To Lower Rear Of Vehicle
- Compressor Motor Runs Continuously Or For Maximum Run Time, Then Stops
- Trouble Shooting
- Removal & Installation
- Torque Specifications
- Wiring Diagrams
- Suspension - Rear Electronic Level Control
- Front Suspension
- Rear Suspension
- Wheel Alignment
- Electronic Suspension
- Transmission
- Automatic Trans
- Diagnosis - A/T
- Application
- Diagnostic Flow
- Description
- Trouble Shooting
- Testing & Diagnosis (Exc. REATTA, Riviera, TORONADO & TROFEO)
- Testing & Diagnosis (REATTA, Riviera, TORONADO & TROFEO)
- Service Bulletins
- TCC Lock-Up Problems
- No Lock-Up Condition
- Brake Switch Test
- Checking Self-Diagnostic System
- TCC Apply Solenoid Test
- No TCC Release Condition
- Checking Voltage To Terminal "A" At Transmission Using ALDL
- Checking Voltage To Terminal "A" At Transmission
- Checking For Ground At Terminal "D" At Trans. Using ALDL
- Checking For Ground At Terminal "D" At Transmission
- Cooler Line Pressure Test
- Electrical Switches Test
- Grounding "D" Wire At Transmission Using ALDL
- Diagnostic Flow Charts (Cars)
- Self-Diagnostic System Check REATTA & Riviera
- Chart A-1, No Service Engine Soon Light - REATTA & Riviera
- Chart A-2, Service Engine Soon Light Won't Go Out Or Flash (REATTA & Riviera)
- Chart A, Blank Odometer Display - REATTA & Riviera
- Chart B, Odometer Displays Error (LOS Of Serial Data) (REATTA & Riviera)
- Chart B-1, BCM Power & Grounds - REATTA & Riviera
- Chart C, ECCP Display Problems (Loss Of ECCP Communications) (REATTA & Riviera)
- Chart D-1, Grounded Serial Data Circuit - REATTA & Riviera
- Chart D-2, Serial Data Circuit Shorted To Voltage - REATTA & Riviera
- Code B556, Odometer (Ee) Prom Error - REATTA & Riviera
- Chart A-1, No Service Engine Soon Light - TORONADO & TROFEO
- Chart A-2, Service Engine Soon Light Will Not Go Out Or Flash - TORONADO & TROFEO
- Self-Diagnostic System Check (Non-CRT TORONADO & TROFEO)
- Chart A, Loss Of IPC Display (Non-CRT Equipped) TORONADO & TROFEO
- Chart B, Loss Of Serial Data (Non-CRT Equipped TORONADO & TROFEO)
- Chart C, Loss Of ECCP Communications (Non-CRT Equipped TORONADO & TROFEO)
- Chart D, Loss Of Communications (Non-CRT Equipped TORONADO & TROFEO)
- Chart D-1, Grounded Serial Data Circuit (Non-CRT Equipped TORONADO & TROFEO)
- Chart D-2, Serial Data Circuit Shorted To Voltage (Non-CRT Equipped TORONADO & TROFEO)
- Self-Diagnostic System Check (CRT Equipped TORONADO & TROFEO)
- Chart A, Loss Of IPC Display (CRT Equipped TORONADO & TROFEO)
- Chart B, Color CRT Blank With Ignition On (CRT Equipped TORONADO & TROFEO)
- Chart C, Color CRT Unable To Control ECCP (CRT Equipped TORONADO & TROFEO)
- Chart D, Serial Data Circuit Open (CRT Equipped TORONADO & TROFEO)
- Chart D-1, Grounded Serial Data Circuit (CRT Equipped TORONADO & TROFEO)
- Chart D-2, Serial Data Circuit Shorted To Voltage (CRT Equipped TORONADO & TROFEO)
- Chart E, Color CRT Abnormalities (CRT Equipped TORONADO & TROFEO)
- Code B127, Gear Selector Switch Circuit
- Code 23, Mat Sensor Signal Voltage High
- Code 24, Vehicle Speed Sensor (A, F, J, L, N, W & Y Bodies)
- Code 24, Vehicle Speed Sensor (VSS) 2.2L J Body (1991)
- Code 24, Vehicle Speed Sensor (VSS) 5.0L & 5.7L TBI B, D & F Bodies
- Code 24, Vehicle Speed Sensor (VSS) SATURN (1991-92)
- Code 25, Mat Sensor Signal Voltage Low
- Code 26, Diagnostic Circuit Check
- Service Engine Soon Light Inoperative
- Service Engine Soon Light Won't Go Out Or Flash Code 12
- Code 26, Quad-Driver Circuit 3.8L W Body
- Code 26, Quad-Driver Circuit - 3.8L H Body
- Code 26, Quad-Driver Circuit - 3.3L A & N Bodies
- Code 26, Quad-Driver Circuit 3.8L C & E Bodies
- Code 27 Or 28, Gear Switch Circuits - 3.3L With 3T40 Transaxle
- Code 28 Or 29, Gear Switch Circuits - 3.3L A Body With 4T60
- Code 27, 28 Or 29 Gear Switch Circuits - 3.8L
- Code 31, Park/Neutral Switch Circuit - 3.3L & 3.8L
- Code 31, Park/Neutral Switch Circuit - 3.8L PFI (VIN L)
- Code 31, Park/Neutral Switch Circuit - 3.3L PFI (VIN N)
- Code 36, Shift Control Problem - 3.8L C & E Bodies W/4T60E Transaxle
- Code 38, Brake Switch Circuit - 3.3L & 3.8L
- Code 39, TCC Circuit 3.3L With 3T40 Transaxle
- Code 39, TCC Circuit 3.3L & 3.8L With 4T60 (440-T4) Transaxle
- Code 38, Brake Switch Circuit - 3.3L PFI N Body
- Chart C-1A, Park/Neutral Switch 1.6L TBI T Body
- Chart C-1A, Park/Neutral Switch - 2.0L & 2.5L TBI & PFI A, J & N Bodies
- Chart C-1A, Park/Neutral Switch - 2.5L TBI W Body
- Chart C-1A, Park/Neutral Switch 2.2L, 2.3L, 3.1L, 3.4L, 5.0L & 5.7L PFI 4.3L, 5.0L & 5.7L TBI A, B, F, J, L, N, W & Y Bodies
- Chart C-8A, Torque Converter Clutch 1.6L & 2.2L TBI T & J Bodies
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 2.0L & 2.2L PFI J Bodies
- Chart C-8A, 3T40 Torque Converter Clutch Electrical Diagnosis 2.3L PFI N & W Bodies
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 2.5L TBI A & N Bodies
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis 2.5L TBI W Body
- Chart C-8, Torque Converter Clutch Electrical Diagnosis - 3.1L PFI A, J & L Bodies (1 Of 2)
- Chart C-8, Torque Converter Clutch Electrical Diagnosis - 3.1L PFI A & J Bodies (2 Of 2)
- Clutch C-8B, 4T60 Torque Converter Clutch Electrical Diagnosis, 3.1L PFI A & W Bodies
- Chart C-8A, Torque Converter Clutch - 3.1L PFI F Body
- Chart C-8A, 3T40 Torque Converter Clutch Electrical Diagnosis - 3.1L PFI W Body
- Chart C-8A, 3T40 Torque Converter Clutch, 3.3L PFI A Body
- Chart C-8B, 4T60 Torque Converter Clutch Electrical Diagnosis - 3.3L PFI A Body
- Chart C-8A, 3T40 Torque Converter Clutch, 3.3L PFI N Body
- Chart C-8B, 4T60 Transaxle Mode Switch Electrical Diagnosis - 3.4L PFI W Body
- Chart C-8C, 4T60 Transaxle 1ST Gear Switch Electrical Diagnosis - 3.4L PFI W Body
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 3.8L PFI C Body
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 1991 E Body (Except ELDORADO) 3.8L PFI (VIN L)
- Chart C-8B, 4T60 Transaxle Shift Solenoid Functional Check - 1991 E Body (Except ELDORADO) 3.8L PFI (VIN L)
- Chart C-8A, Torque Converter Clutch Functional Check - 1992 3.8L PFI (VIN L & 1)
- Notes
- Diagnostic Aids
- Transaxle Prefunctional Check
- No Indicator Lights On Or Ignition Indicator Light Only On
- Battery Indicator Light On, All Other Indicator Lights Off
- Brake Indicator Light Not On
- Shift "A" And/Or Shift "B" Indicator lights Not On
- Converter Clutch Apply Indicator Light On All The Time
- Converter Clutch MOD Indicator Light On All the Time
- Chart C-8B, 4T60 Transaxle Shift Solenoid Functional Check - 3.8L PFI (VIN L & 1) 1992
- Notes
- Diagnostic Aids
- Transaxle Prefunctional Check
- No Indicator Lights On Or Ignition Indicator Light Only On
- Battery Indicator Light On, All Other Indicator Lights Off
- Brake Indicator Light Not On
- Shift "A" And/Or Shift "B" Indicator Lights Not On
- Converter Clutch Apply Indicator Light On All The Time
- Converter Clutch MOD Indicator Light On All the Time
- Chart C-8A, Torque Converter Clutch Functional Check - 1992 3.8L PFI (VIN 1)
- Chart C-8B, 4T60 Transaxle Shift Solenoid Functional Check - 1992 3.8L PFI (VIN 1)
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 3.8L PFI (VIN L) W Body
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 4.3L, 5.0L & 5.7L TBI B & D Bodies
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 5.0L & 5.7L PFI F Body
- Chart C8-A, Torque Converter Clutch Electrical Diagnosis - 1991 5.7L PFI Y Body
- Chart C-8A, Torque Converter Clutch Electrical Diagnosis - 1992 5.7L PFI Y Body
- Diagnostic Code Charts (Trucks)
- Code 23, Mat Sensor Temp. Low - 1991 2.5L & 4.3L Turbo
- Code 23 Mat Sensor Temp. Low - 1992 2.5L & 4.3L Turbo
- Code 24, Vehicle Speed Sensor - Except 3.1L, C & K Series & Models With 4L80-E Transmission
- Code 24, Vehicle Speed Sensor - 1992 Except 4L80-E Trans.
- Code 24, Vehicle Speed Sensor - C & K Series Except W/4L80-E Transmission
- Code 24, Vehicle Speed Sensor - C & K Series 2WD With 4L80-E Transmission
- Code 24, Vehicle Speed Sensor - 1992 With 4L80-E Transmission
- Code 24, Vehicle Speed Sensor - 2WD With 4L80-E Transmission Except C & K Series
- Code 24, Vehicle Speed Sensor - 4WD With 4L80-E Transmission
- Code 24, Vehicle Speed Sensor - 3.1L
- Code 24, Vehicle Speed Sensor - 1991 Diesel
- Code 24, Vehicle Speed Sensor - 1992 6.2L Diesel
- Code 25, Mat Sensor Temp. High - 1991 2.5L & 4.3L Turbo
- Code 25, Mat Sensor Temp. High - 1992 2.5L & 4.3L Turbo
- Code 28, Pressure Switch Manifold Fault (LT. Truck)
- Code 39, Torque Converter Clutch Stuck In "Off" Position - LT. Truck
- Code 53, System Voltage High - LT. Truck
- Code 58, Transmission Temperature Sensor Circuit (High Temperature Indicated) - LT. Truck
- Code 59, Transmission Temperature Sensor Circuit (Low Temperature Indicated) - LT. Truck
- Code 68, Overdrive Ratio Error - LT. Truck
- Code 73, Force Motor Current (Current Error) - LT. Truck
- Code 75, System Voltage Low - LT. Truck
- Code 81, QDM Fault Solenoid "B" - LT. Truck
- Code 82, QDM Fault Solenoid "A" - LT. Truck
- Code 83, TCC QDM Fault - LT. Truck
- Code 85, Undefined Ratio - LT. Truck
- Code 86, Shift Solenoid "B" Stuck "On" - LT. Truck
- Code 87, Shift Solenoid "B" Stuck "Off" - LT. Truck
- Park/Neutral Switch Test (Trucks)
- Torque Converter Clutch Charts (Trucks)
- Chart C-8, Torque Converter Clutch - 2.5L & 2.8L LT. Trucks & Vans
- Chart C-8 Torque Converter Clutch - 3.1L Vans
- Chart C-8 Torque Converter Clutch - 4.3L Turbo PFI
- Chart C-8, Torque Converter Clutch - 4.3L, 5.0L, 5.7L LT. Trucks & Vans
- Torque Converter Clutch Electrical Diagnosis - Diesel Electronic Control System
- Component Check Charts (Trucks)
- Output Speed Sensor Circuit Check - 2WD Except "C" & "K" Series
- Output Speed Sensor Circuit Check - 2WD - "C" & "K" Series
- Output Speed Sensor Circuit Check - 4WD Vehicles
- Input Speed Sensor Circuit Check - LT. Truck
- Brake Signal Circuit Check - All Engines, LT. Truck
- Torque Converter Clutch Circuit Check - LT. Truck
- Shift Solenoid "A" Circuit Check - LT. Truck
- Shift Solenoid "B" Circuit Check - LT. Truck
- Force Motor Circuit Check (LT. Truck)
- Wiring Diagrams
- Diagnosis - A/T - 4T60-E
- Application
- Description
- Operation
- Trouble Shooting
- Electronic Self-Diagnostics (Except CADILLAC & REATTA)
- Electronic Self-Diagnostics (REATTA)
- Diagnostic Charts (Except CADILLAC)
- Diagnostic Charts
- Code 14, Coolant Temperature Sensor Signal Voltage Low
- Diagnostic Aids
- Code 15, Coolant Temperature Sensor Signal Voltage High
- Code 21, Throttle Position Sensor Signal Voltage High
- Code 22, Throttle Position Sensor Signal Voltage Low
- Code 24, Vehicle Speed Sensor (VSS)
- Code 26, Quad-Driver Circuit 3.8L C, E & H Bodies (1 Of 3)
- Temp (Hot) Light Diagnosis (C & H Body)
- Code 26, Quad-Driver Circuit 3.8L C, E & H Bodies (2 Of 3)
- Code 26, Quad-Driver Circuit 3.8L C, E & H Bodies (3 Of 3)
- Code 26, Quad-Driver Circuit 3.8L U Body (1 Of 3)
- Code 26, Quad-Driver Circuit 3.8L U Body (2 Of 3)
- Code 26, Quad-Driver Circuit 3.8L U Body (3 Of 3)
- Code 31, Park/Neutral Switch Circuit
- Code 36, Shift Control Problem
- Code 38, Brake Switch Circuit
- Code 39, TCC Circuit
- Code 56, Quad-Driver Circuit 3.8L U Body (1 Of 3)
- Code 56, Quad-Driver Circuit 3.8L U Body (2 Of 3)
- Code 56, Quad-Driver Circuit 3.8L U Body (3 Of 3)
- Electronic Self-Diagnostics (CADILLAC)
- Diagnostic Charts (CADILLAC)
- CADILLAC
- Pcm Code EO14, Shorted Coolant Sensor Circuit
- Pcm Code EO15, Open Coolant Sensor Circuit
- Pcm Code EO21, Shorted TPS Circuit (Signal Voltage High)
- Pcm Code EO22, Open TPS Circuit (Signal Voltage Low)
- Pcm Code EO24, Speed Sensor Circuit Problem
- Pcm Code EO39, VCC Engagement Problem (1 Of 2)
- Pcm Replacement Check
- Pcm Code EO39, VCC Engagement Problem (2 Of 2)
- Pcm Code EO90, VCC Brake Switch Input Problem
- Pcm Code EO91, Park/Neutral Switch Problem (1 Of 2)
- Pcm Code EO91, Park/Neutral Switch Problem (2 Of 2)
- Component Tests
- Service Bulletins
- Wiring Diagrams
- Overhaul & Testing - 125C/3T40
- Applications
- Identification
- Description
- Lubrication & Adjustments
- On-Vehicle Service
- Trouble Shooting
- Notes
- Chatters Or Slips In 1ST Gear
- Inoperative Or Slips In 1ST Gear
- Inoperative Or Slips In Reverse
- Delayed Or No Upshifts
- Slipping Or Rough 1-2 Shift
- Delayed Or Rough 2-3 Shift
- Slipping, Soft Or Early 2-3 Shift
- Delayed Or No 2-3 Shift
- Delayed Neutral-To-Drive Shift
- Delays In Drive & Reverse
- No 2ND Gear In "D"
- All Gears Inoperative
- Inoperative In "D"
- Forward Gears Inoperative
- Transaxle Starts In 2ND Gear
- Transaxle Skips 2ND Gear
- Shifts From 3RD To 1ST At High Speeds
- No Full Throttle Detent Downshift
- No Overrun Braking In "1" (Reverse Okay)
- Binds In 3RD Gear
- Inoperative In "2"
- Engine Stalls In "R" Or "D
- Noise In All Gears
- High Pitched Whine Or Popping
- Buzzing Or High Pitched Rattle
- Whine Or Growl Under Light Acceleration
- Noise In 1ST Or Reverse Gear
- Noise In 2ND Gear
- Hum During Light Acceleration (All Gears)
- Light Rattle In 2ND Or 3RD At 25-40 Mph
- Testing
- Removal & Installation
- Torque Converter
- Transaxle Disassembly
- Component Disassembly & Reassembly
- Notes
- Transaxle Case
- Differential & Final Drive
- Reaction Internal Gear
- Low Roller Clutch & Reaction Carrier Assembly
- Low-Reverse Clutch Housing
- Reaction Sun Gear & Input Drum End Play
- Input Carrier, Input Sun Gear & Internal Gear
- Forward Clutch Assembly
- Direct Clutch Assembly
- Intermediate Band
- Driven Sprocket Support
- Manual Shaft
- Drive Link Assembly (Chain, Sprockets & Turbine Shaft)
- Case Cover
- Control Valve Body & Oil Pump Assemblies
- Auxiliary Valve Body
- Intermediate Servo
- Governor/Speedometer Gear Or Governor/Speed Sensor Assembly
- Transaxle Reassembly
- Torque Specifications
- Removal & Installation - A/T
- Servicing - A/T
- Diagnosis - A/T
- Automatic Transaxle Hydraulic Diagrams - 125C/3T40
- Automatic Trans
- External Pages
