Repair and Diagnosis (Single Page)
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Quick Lookups
Electrical Component Locations
Technical Bulletins
Wiring Diagrams
- Accessories & Equipment
- Cruise Control Systems
- Cruise Control System - Vacuum Servo
- Gauges & Instrument Panels
- Instrument Panel - Standard & Electronic
- Description & Operation
- Standard Instruments
- Electronic Instruments (Astro, Safari, C, K, S & T Series)
- Park Brake Warning Light Operation
- Brake Warning Light System Operation
- Brake Abs Or Anti-Lock Warning Light System Operation
- Charging System Warning System Operation
- Check Gauges Light Operation
- Coolant Temperature Gauge Operation
- Coolant Temperature Warning System Operation
- Digital Ratio Adapter Controller Operation
- Fuel Gauge Operation
- Low Coolant Indicator Operation
- Low Fuel Warning Operation
- Low Oil Pressure Warning System Operation
- Oil Pressure Gauge Operation
- Service Engine Soon Or Check Engine Warning Light Operation
- Service Fuel Filter Or Water In Fuel Warning Light Operation
- Shift Light Operation
- Speedometer/Odometer Operation
- Vehicle Speed Sensor Operation
- Voltmeter Operation
- Wait Or Glow Plugs Light Operation
- Adjustments
- Testing
- Brake Warning System
- Buffer Output (C & K Series) Testing
- Buffer Power (C & K Series) Testing
- Check Gauges Light Testing - C, K, S, & T Series
- Coolant Temperature Gauge Testing - Astro, Safari, C, K, S & T Series
- Coolant Temp. Gauge Testing - G, P, R & V Series
- Coolant Temp Warning SYS Testing - Astro, Safari, C, K, S & T Series
- Elect. I/C Testing & Operation- (Astro & Safari)
- Cluster Display Does Not Light
- Cluster Display Does Not Dim With Lights On
- Cluster Display Always Dim
- Cluster Display Does Not Switch Between English & Metric
- Speedometer Inoperative Or Inaccurate, Odometer Operates Correctly
- One Or Both Odometers Do Not Operate Properly, Speedometer Operates Properly
- Speedometer & Odometer Do Not Operate
- Cluster Display Does Not Switch Between Total & Trip Odometer
- Trip Odometer Does Not Reset
- Fuel Gauge Is Inaccurate
- Low Fuel Indicator Does Not Light With Low Fuel Level
- Temperature Gauge Is Inaccurate
- Temp Indicator Does Not Light With Engine Coolant Overheated
- Oil Pressure Gauge Inaccurate
- Oil Pressure Indicator Does Not Light
- Voltmeter Is Inaccurate
- Elect. I/C Testing (S & T Series)
- Cluster Display Does Not Light
- Cluster Display Does Not Dim With Lights On
- Cluster Display Always Dim
- Speedometer Inoperative Or Inaccurate, Odometer Operates Correctly
- One Or Both Odometers Do Not Operate Properly, Speedometer Operates Properly
- Speedometer & Odometer Do Not Operate
- Fuel Gauge Is Inaccurate
- Low Fuel Indicator Does Not Light With Low Fuel Level
- Temperature Gauge Is Inaccurate
- Temp Indicator Does Not Light With Engine Coolant Overheated
- Oil Pressure Gauge Inaccurate
- Oil Pressure Indicator Does Not Light
- Voltmeter Is Inaccurate
- Fuel Gauge Testing - (Astro, Safari, C, K, S & T Series)
- Fuel Gauge Testing - (G, P, R & V Series)
- Oil Pressure Gauge Testing - Astro, Safari, C, K, S & T Series
- Oil Pressure Gauge Testing - (G, P, R & V Series)
- Oil Pressure Warning System Testing
- Speedometer/Odometer Testing
- Vehicle Speed Sensor & Digital Ratio Adapter Controller Astro, Safari, C, G, K, S & T Series
- Voltmeter Gauge Testing
- Removal & Installation
- Speedometer Calibration Specifications
- Description & Operation
- Instrument Panel - Standard & Electronic
- Steering Column Switches
- Warning Systems
- Wiper/Washer Systems - P Series Van
- Cruise Control Systems
- Brakes
- Mechanical - Hydraulic
- DISC & DRUM (C, G, K, P, R & V Series)
- Description
- Operations
- Bleeding
- Adjustments
- Testing
- Hydro-Boost Trouble Shooting
- Rotor Servicing
- Cleaning & Inspection
- Removal & Installation
- Brake Booster - Except Hydro-Boost
- Brake Booster - Hydro-Boost
- Disc Calipers & Pads - DELCO Floating Caliper
- Disc Calipers & Pads - BENDIX Sliding Caliper
- Disc Caliper
- Front Disc Rotor - 2WD Models
- Front Disc Rotor - 4WD Except "V" Series
- Front Disc Rotor - 4WD Models "V" Series
- Disc Rotor - Rear
- Drum Brake Shoes
- Master Cylinder
- Axle Bearing & Seal - Semi-Floating Axle
- Hub Bearings & Seal - Full Floating Axle
- Rear Wheel Cylinder
- Brake Switch
- Overhaul
- Brake Booster - DELCO-Moraine Single Diaphragm
- Brake Booster - DELCO-Moraine Tandem Diaphragm
- Brake Booster - BENDIX Hydro-Boost
- Disc Caliper - DELCO Floating Caliper
- Disc Caliper - BENDIX Sliding Caliper
- Drum Brake Shoe & Lining Replacement
- Master Cylinder - BENDIX/DELCO-Moraine Dual Piston
- Master Cylinder - BENDIX Mini-Master Cylinder
- Master Cylinder - DELCO Quick Take-Up
- Rear Wheel Cylinder
- Hydro Boost Torque Specifications
- Torque Specifications
- Disc Brake Specifications
- Drum Brake Specifications
- DISC & DRUM (C, G, K, P, R & V Series)
- Mechanical - Hydraulic
- Drivelines & Axles
- Differentials & Drive Axles
- Differential - EATON Positive Traction
- Drive Axle - 10.5"
- Drive Axle - Full Floating
- Drive Axle - ROCKWELL 12"
- Drive Axle Ratio Identification
- Driveshaft & Universal Joints
- Differentials & Drive Axles
- Electrical
- Charging Systems
- Alternator & Regulator
- Description (Alternator & Regulator)
- Operation (Alternator & Regulator)
- Trouble Shooting (Alternator & Regulator)
- On-Vehicle Testing (Alternator & Regulator)
- Bench Testing (Alternator & Regulator)
- Overhaul (Alternator & Regulator)
- Specifications (Alternator & Regulator)
- Alternator & Regulator
- Component Locations
- Gauges
- Instrument Panel - Standard & Electronic
- Description & Operation
- Standard Instruments
- Electronic Instruments (Astro, Safari, C, K, S & T Series)
- Park Brake Warning Light Operation
- Brake Warning Light System Operation
- Brake Abs Or Anti-Lock Warning Light System Operation
- Charging System Warning System Operation
- Check Gauges Light Operation
- Coolant Temperature Gauge Operation
- Coolant Temperature Warning System Operation
- Digital Ratio Adapter Controller Operation
- Fuel Gauge Operation
- Low Coolant Indicator Operation
- Low Fuel Warning Operation
- Low Oil Pressure Warning System Operation
- Oil Pressure Gauge Operation
- Service Engine Soon Or Check Engine Warning Light Operation
- Service Fuel Filter Or Water In Fuel Warning Light Operation
- Shift Light Operation
- Speedometer/Odometer Operation
- Vehicle Speed Sensor Operation
- Voltmeter Operation
- Wait Or Glow Plugs Light Operation
- Adjustments
- Testing
- Brake Warning System
- Buffer Output (C & K Series) Testing
- Buffer Power (C & K Series) Testing
- Check Gauges Light Testing - C, K, S, & T Series
- Coolant Temperature Gauge Testing - Astro, Safari, C, K, S & T Series
- Coolant Temp. Gauge Testing - G, P, R & V Series
- Coolant Temp Warning SYS Testing - Astro, Safari, C, K, S & T Series
- Elect. I/C Testing & Operation- (Astro & Safari)
- Cluster Display Does Not Light
- Cluster Display Does Not Dim With Lights On
- Cluster Display Always Dim
- Cluster Display Does Not Switch Between English & Metric
- Speedometer Inoperative Or Inaccurate, Odometer Operates Correctly
- One Or Both Odometers Do Not Operate Properly, Speedometer Operates Properly
- Speedometer & Odometer Do Not Operate
- Cluster Display Does Not Switch Between Total & Trip Odometer
- Trip Odometer Does Not Reset
- Fuel Gauge Is Inaccurate
- Low Fuel Indicator Does Not Light With Low Fuel Level
- Temperature Gauge Is Inaccurate
- Temp Indicator Does Not Light With Engine Coolant Overheated
- Oil Pressure Gauge Inaccurate
- Oil Pressure Indicator Does Not Light
- Voltmeter Is Inaccurate
- Elect. I/C Testing (S & T Series)
- Cluster Display Does Not Light
- Cluster Display Does Not Dim With Lights On
- Cluster Display Always Dim
- Speedometer Inoperative Or Inaccurate, Odometer Operates Correctly
- One Or Both Odometers Do Not Operate Properly, Speedometer Operates Properly
- Speedometer & Odometer Do Not Operate
- Fuel Gauge Is Inaccurate
- Low Fuel Indicator Does Not Light With Low Fuel Level
- Temperature Gauge Is Inaccurate
- Temp Indicator Does Not Light With Engine Coolant Overheated
- Oil Pressure Gauge Inaccurate
- Oil Pressure Indicator Does Not Light
- Voltmeter Is Inaccurate
- Fuel Gauge Testing - (Astro, Safari, C, K, S & T Series)
- Fuel Gauge Testing - (G, P, R & V Series)
- Oil Pressure Gauge Testing - Astro, Safari, C, K, S & T Series
- Oil Pressure Gauge Testing - (G, P, R & V Series)
- Oil Pressure Warning System Testing
- Speedometer/Odometer Testing
- Vehicle Speed Sensor & Digital Ratio Adapter Controller Astro, Safari, C, G, K, S & T Series
- Voltmeter Gauge Testing
- Removal & Installation
- Speedometer Calibration Specifications
- Description & Operation
- Instrument Panel - Standard & Electronic
- 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)
- Cooling Fan
- Cooling System (Mechanical)
- Mechanical
- 4.3L V6 - VIN [Z]
- Engine Identification
- Adjustments
- Trouble Shooting
- Removal & Installation
- Overhaul
- Rocker Arm Studs
- Valve Lifters
- Camshaft
- Cam Lobe Lift
- Camshaft Bearings
- Rear Crankshaft Oil Seal
- Valves
- Valve Seats
- Valve Springs
- Valve Spring Installed Height
- Valve Stem Oil Seals
- Valve Guides
- Seat Correction Angles
- Rocker Arm Assembly
- Piston & Rod Assembly
- Piston Pin
- Fitting Pistons
- Piston Rings
- Rod Bearings
- Crankshaft & Main Bearings
- Thrust Bearing Alignment
- Crankshaft End Play
- Cylinder Block
- Lubrication
- Torque Specifications
- Engine Specifications
- 5.0L V8 - VIN [H]
- Engine Identification
- Adjustments
- Trouble Shooting
- Removal & Installation
- Overhaul
- Lubrication
- Torque Specifications
- Engine Specifications
- 5.7L V8 - VIN [K]
- Engine Identification
- Adjustments
- Trouble Shooting
- Removal & Installation
- Overhaul
- Lubrication
- Torque Specifications
- Engine Specifications
- 6.2L V8 Diesel - VINS [C,J]
- Engine Identification
- Adjustments
- Trouble Shooting
- Removal & Installation
- General Precaution
- Engine
- Intake Manifold
- Exhaust Manifold
- Cylinder Head
- Front Cover
- Front Cover Oil Seal
- Timing Chain & Sprockets
- Marking TDC On Front Cover
- Fuel Injection Pump Timing
- Rocker Arm
- Hydraulic Valve Lifters
- Camshaft
- Camshaft Bearings
- Rear Crankshaft Oil Seal
- Water Pump
- Oil Pan
- Valves
- Valve Guides
- Valve Springs
- Valve Seats
- Valve Stem Oil Seals
- Seat Correction Angles
- Rocker Arm Assembly
- Piston & Rod Assembly Removal
- Piston, Rod & Piston Rings Installation
- Overhaul
- Lubrication
- Torque Specifications
- Engine Specifications
- Engine Oil Pan Removal
- Engine Removal - Pickup & Van
- 4.3L V6 - VIN [Z]
- Starter
- Engine Performance
- Engine Controls - Adjustments
- Engine Mechanical
- Valve Clearance
- 4-Cylinder Ignition Timing
- V6 Ignition Timing
- V8 Ignition Timing
- Injection Pump Timing (Diesel)
- Idle Speed & Mixture (Gasoline)
- Idle Speed (Diesel)
- Purging Fuel System (Diesel)
- TPS Adjustment (Gasoline)
- TPS Adjustment (Diesel)
- Vacuum Regulator Valve/Detent Switch Adjustment (Diesel)
- Application
- Emissions
- EGR Function Testing - General Motors Trucks
- Emission Applications - Diesel
- 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)
- Torque Specifications
- Engine Controls - Remove/Install/Overhaul
- Sensor Range Charts
- Engine Controls - Specifications
- System
- Engine Controls - Basic Testing
- Introduction
- Visual Inspection
- Mechanical Inspection
- No-Start Diagnosis
- No-Start - Engine Cranks Okay (TBI With HEI)
- Fuel System Pressure Relief
- Fuel System Pressure Test
- Basic Fuel System Checks (Diesel)
- Basic Ignition System Checks (Gasoline)
- Idle Speed & Ignition Timing (All Engines)
- Diagnostic Circuit Check (Gasoline)
- Chart A-1, Service Engine Soon Light Inoperative
- Chart A-2, Service Engine Soon Light Won't Flash Code 12
- Chart A-3, Engine Cranks But Will Not Run
- Chart A-4, Injector Circuit Diagnosis
- Chart A-5, Fuel Pump Relay Circuit Diagnosis
- Chart A-6, Fuel System Pressure Test
- Diagnostic Circuit Check (Diesel)
- Diagnostic Procedure
- Summary
- Engine Controls - System/Component Tests
- Introduction
- 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 (2.5L Only)
- Oxygen Sensor (O2)
- P/N Switch
- Power Steering Pressure Switch (2.5L Only)
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensor (Pm Generator Type)
- Relays, Solenoids, Motors & Modules
- Fuel System (Gasoline)
- Idle Control System
- Fuel System (Diesel)
- Glow Plug System Diagnosis
- Diesel Cold Advance System Check
- Injection Pump Housing Leakage Test
- Injectors
- Ignition System
- Emission Systems & Sub-Systems (Gasoline)
- Exhaust Gas RECIRCULATION (EGR)
- Fuel Evaporation Control
- Emission Systems & Sub-Systems (Diesel)
- Miscellaneous ECM Controls
- Transmission
- Engine Controls - Tests W/Codes - Diesel
- Introduction
- Self-Diagnostic System
- Diagnostic Procedure
- Entering Or Exiting Diagnostic Mode
- Trouble Code Identification
- ECM Location
- Diagnostic Charts
- Notes
- Diagnostic Circuit Check
- Service Engine Soon Light Inoperative
- ECM Check, Service Engine Soon Light On At All Times Or Won't Flash Code 12
- EPR Solenoid Electrical Check
- EPR Vacuum Circuit Check
- Code 12, No Reference Pulse
- Code 14, Coolant Temp Sensor Signal Voltage Low
- Code 15, Coolant Temp Sensor Signal Voltage High
- Code 21, Throttle Position Sensor Signal Voltage High
- Code 22, Throttle Position Sensor Signal Voltage Low
- Code 23, Throttle Position Sensor MISADJUSTED
- Code 24, Vehicle Speed Sensor Circuit
- Code 31, Manifold Absolute Pressure Sensor Signal Voltage Low
- Code 32, EGR Circuit Loop Error
- Code 33, Map Sensor Signal Voltage High
- Code 51, Prom Problem
- Code 52, ECM Fault
- Code 53, Voltage Reference Overload
- Engine Controls - Tests W/Codes - TBI
- Introduction
- Self-Diagnostic System
- Diagnostic Procedure
- Retrieving Codes (Non-Scan)
- Clearing Trouble Codes
- Diagnostic Materials
- Diagnostic Tests
- Notes
- Chart A-5A: Fuel Pump Relay Circuit "R & V" Series
- Code 13: Open Oxygen Sensor Circuit
- Code 14: Coolant Sensor Signal Voltage Low
- Code 15: Coolant Sensor Signal Voltage High
- Code 21: TPS Signal Voltage High
- Code 22: TPS Signal Voltage Low
- Code 23: Mat Signal Temp Low (2.5L)
- Code 24: Vehicle Speed Sensor (Except 3.1L)
- Code 24: Vehicle Speed Sensor (3.1L)
- Code 25: Mat Sensor Temp. High (2.5L)
- Code 32: EGR System Error 2.5L/5.0L/4.3L Except S & T) & 5.7L (Less Than 8500 GVWR)
- Code 32: EGR System Error 2.8L, 3.1L, 4.3L (S & T), 5.7L (Greater Than 8500 GVWR) & 7.4L
- Code 33: Map Sensor Signal Voltage High
- Code 34: Map Sensor Signal Voltage Low
- Code 35: Idle Speed Error (2.5L)
- Code 42: Electronic Spark Timing (Est) With HEI Ignition
- Code 43: ELEC Spark Control Signal Voltage Low (Except 2.5L)
- Code 44: Lean Exhaust Indication
- Code 45: Rich Exhaust Indication
- Code 51: Faulty Prom/Mem-Cal
- Code 52: Faulty CALPAK (Except 2.5L)
- Code 53: System OVERVOLTAGE (2.5L)
- Code 54: Fuel Pump Circuit (Except 3.1L)
- Code 54: Fuel Pump Circuit (3.1L)
- Code 55: ECM Error (Except 2.5L)
- Summary
- Engine Controls - Tests W/O Codes
- Introduction
- Symptoms (Gasoline)
- 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 Won't Start
- Engine Stalls At Idle
- Engine Starts, Idles Rough W/O Unusual Noise Or Smoke Table
- Engine Starts & Idles W/Excessive Noise And/Or Smoke Table
- 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
- Intermittent Problem Diagnosis
- Test Procedures
- Intermittent Trouble Shooting
- System/Component Locations
- Engine Controls - Basic Testing
- Testing & Diagnosis
- Engine Controls - Basic Testing
- Introduction
- Visual Inspection
- Mechanical Inspection
- No-Start Diagnosis
- No-Start - Engine Cranks Okay (TBI With HEI)
- Fuel System Pressure Relief
- Fuel System Pressure Test
- Basic Fuel System Checks (Diesel)
- Basic Ignition System Checks (Gasoline)
- Idle Speed & Ignition Timing (All Engines)
- Diagnostic Circuit Check (Gasoline)
- Chart A-1, Service Engine Soon Light Inoperative
- Chart A-2, Service Engine Soon Light Won't Flash Code 12
- Chart A-3, Engine Cranks But Will Not Run
- Chart A-4, Injector Circuit Diagnosis
- Chart A-5, Fuel Pump Relay Circuit Diagnosis
- Chart A-6, Fuel System Pressure Test
- Diagnostic Circuit Check (Diesel)
- Diagnostic Procedure
- Summary
- Engine Controls - System/Component Tests
- Introduction
- 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 (2.5L Only)
- Oxygen Sensor (O2)
- P/N Switch
- Power Steering Pressure Switch (2.5L Only)
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensor (Pm Generator Type)
- Relays, Solenoids, Motors & Modules
- Fuel System (Gasoline)
- Idle Control System
- Fuel System (Diesel)
- Glow Plug System Diagnosis
- Diesel Cold Advance System Check
- Injection Pump Housing Leakage Test
- Injectors
- Ignition System
- Emission Systems & Sub-Systems (Gasoline)
- Exhaust Gas RECIRCULATION (EGR)
- Fuel Evaporation Control
- Emission Systems & Sub-Systems (Diesel)
- Miscellaneous ECM Controls
- Transmission
- Engine Controls - Tests W/Codes - Diesel
- Introduction
- Self-Diagnostic System
- Diagnostic Procedure
- Entering Or Exiting Diagnostic Mode
- Trouble Code Identification
- ECM Location
- Diagnostic Charts
- Notes
- Diagnostic Circuit Check
- Service Engine Soon Light Inoperative
- ECM Check, Service Engine Soon Light On At All Times Or Won't Flash Code 12
- EPR Solenoid Electrical Check
- EPR Vacuum Circuit Check
- Code 12, No Reference Pulse
- Code 14, Coolant Temp Sensor Signal Voltage Low
- Code 15, Coolant Temp Sensor Signal Voltage High
- Code 21, Throttle Position Sensor Signal Voltage High
- Code 22, Throttle Position Sensor Signal Voltage Low
- Code 23, Throttle Position Sensor MISADJUSTED
- Code 24, Vehicle Speed Sensor Circuit
- Code 31, Manifold Absolute Pressure Sensor Signal Voltage Low
- Code 32, EGR Circuit Loop Error
- Code 33, Map Sensor Signal Voltage High
- Code 51, Prom Problem
- Code 52, ECM Fault
- Code 53, Voltage Reference Overload
- Engine Controls - Tests W/Codes - TBI
- Introduction
- Self-Diagnostic System
- Diagnostic Procedure
- Retrieving Codes (Non-Scan)
- Clearing Trouble Codes
- Diagnostic Materials
- Diagnostic Tests
- Notes
- Chart A-5A: Fuel Pump Relay Circuit "R & V" Series
- Code 13: Open Oxygen Sensor Circuit
- Code 14: Coolant Sensor Signal Voltage Low
- Code 15: Coolant Sensor Signal Voltage High
- Code 21: TPS Signal Voltage High
- Code 22: TPS Signal Voltage Low
- Code 23: Mat Signal Temp Low (2.5L)
- Code 24: Vehicle Speed Sensor (Except 3.1L)
- Code 24: Vehicle Speed Sensor (3.1L)
- Code 25: Mat Sensor Temp. High (2.5L)
- Code 32: EGR System Error 2.5L/5.0L/4.3L Except S & T) & 5.7L (Less Than 8500 GVWR)
- Code 32: EGR System Error 2.8L, 3.1L, 4.3L (S & T), 5.7L (Greater Than 8500 GVWR) & 7.4L
- Code 33: Map Sensor Signal Voltage High
- Code 34: Map Sensor Signal Voltage Low
- Code 35: Idle Speed Error (2.5L)
- Code 42: Electronic Spark Timing (Est) With HEI Ignition
- Code 43: ELEC Spark Control Signal Voltage Low (Except 2.5L)
- Code 44: Lean Exhaust Indication
- Code 45: Rich Exhaust Indication
- Code 51: Faulty Prom/Mem-Cal
- Code 52: Faulty CALPAK (Except 2.5L)
- Code 53: System OVERVOLTAGE (2.5L)
- Code 54: Fuel Pump Circuit (Except 3.1L)
- Code 54: Fuel Pump Circuit (3.1L)
- Code 55: ECM Error (Except 2.5L)
- Summary
- Engine Controls - Tests W/O Codes
- Introduction
- Symptoms (Gasoline)
- 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 Won't Start
- Engine Stalls At Idle
- Engine Starts, Idles Rough W/O Unusual Noise Or Smoke Table
- Engine Starts & Idles W/Excessive Noise And/Or Smoke Table
- 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
- Intermittent Problem Diagnosis
- Test Procedures
- Intermittent Trouble Shooting
- System/Component Locations
- Engine Controls - Basic Testing
- Theory and Operation
- Engine Controls - Theory & Operation
- Introduction
- Airflow Sensing Description
- Computerized Engine Controls (Gasoline) Description
- Electronic Control Module (ECM) Description
- Input Devices
- Notes
- A/C On (A/C Request) Signal (3.1L)
- A/C Pressure Switches
- Battery Voltage
- Brake Switch Feedback
- Coolant Temperature Sensor (Cts)
- Crank Signal
- Fuel Pump Feedback
- Gear Switches
- Knock Sensor (Except 2.5L)
- Manifold Absolute Pressure (Map) Sensor
- Manifold Air Temperature (Mat) Sensor (2.5L)
- Oxygen (O2) Sensor
- Park/Neutral Switch (P/N)
- Power Steering (P/S) Switch ("S" & "T" Series With 2.5L)
- Rpm Reference Signal
- Throttle Position Sensor (TPS)
- Vehicle Speed Sensor (VSS)
- Output Signals
- Computerized Engine Controls (Diesel)
- Notes
- Electronic Control Module (ECM)
- Memories
- Input Devices
- Coolant Temperature Sensor (Cts)
- Manifold Absolute Pressure Sensor (Map)
- Throttle Position Sensor (TPS)
- Engine Speed Sensor
- Vehicle Speed Sensor (VSS)
- Output Signals
- Electronic Controller/Glow Plug Relay
- Cold Advance Control
- Torque Converter Clutch
- Exhaust Gas RECIRCULATION System
- Gasoline Fuel Delivery
- Fuel System (Diesel)
- Diesel Injection Pump
- Ignition System (Gasoline)
- Ignition Timing Systems (Gasoline)
- Emission Systems (Gasoline)
- Air Injection System
- Electric Air Control (EAC) Valves With Relief Tube (ECT)
- Air Pump
- Check Valve
- Air Management System
- Catalytic Converter
- Exhaust Gas RECIRCULATION (EGR)
- Port EGR
- Negative BACKPRESSURE EGR
- Evaporative Emission Control (EEC)
- Carbon Canister
- Positive Crankcase Ventilation (PCV)
- Thermostatic Air Cleaner (TAC)
- Vacuum Control Temperature Sensor
- Air Control Door
- Vacuum Motor
- Throttle Return Control System
- Emission Systems (Diesel)
- Self-Diagnostic System
- Miscellaneous ECM Controls
- Transmission
- Engine Controls - Theory & Operation
- Wiring Diagrams
- Engine Controls - Adjustments
- 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 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
- Traction Control Disable Procedures
- Trouble Shooting - Manual Transmission - General Information
- Heating, Ventilation & A/C (HVAC)
- General Servicing
- A/C Compressor Servicing
- HARRISON A-6 6-CYL Clutch R & I
- HARRISON A-6 6-CYL Shaft Seal R & I
- HARRISON Hr-6 6-CYL & DA-V5 5-CYL Clutch R & I
- HARRISON Hr-6 6-CYL & DA-V5 5-CYL Shaft Seal
- HARRISON R-4 4-CYL Clutch R & I
- HARRISON R-4 4-CYL Shaft Seal R & I
- NIPPONDENSO 10PA20 10-CYL Clutch R & I
- NIPPONDENSO 10PA20 10-CYL Shaft Seal R & I
- 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
- 1990 Passenger Car Service Valves Location
- 1991 Passenger Car Service Valves Location
- 1990 Truck/Van Service Valves Location
- 1991 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
- Orifice Tube Location & Tool Identification
- 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 Compressor Servicing
- General Servicing
- Steering
- Manual Steering
- Power Steering
- Steering Column
- Steering Linkage
- Suspension
- Front Suspension
- Suspension - Front (2WD Coil Spring)
- Description
- Adjustments
- Ball Joint Inspection
- Removal & Installation
- Torque Specification
- Suspension - Front (2WD Coil Spring)
- Rear Suspension - P Series
- Wheel Alignment
- Front Suspension
- Transmission
- Automatic Trans
- Diagnosis - Torque Converter Clutch
- Applications
- Description
- Trouble Shooting
- Testing & Diagnosis
- Diagnostic Charts
- Chart C-8, Torque Converter Clutch - 2.5L & 2.8L
- Chart C-8, Torque Converter Clutch - 4.3L, 5.0L, 5.7L
- Code 24, Vehicle Speed Sensor
- Chart C-1A, Park/Neutral Switch
- Code 24, Vehicle Speed Sensor Circuit Fault Computer Command Control
- Code 25, Manifold Air Temperature Sensor Voltage Low - Computer Command Control (2.5L Engine Only)
- Map Output Check - Computer Command Control
- Park/Neutral Switch Diagnosis - Computer Command Control
- Torque Converter Clutch Electrical Diagnosis - Computer Command Control (2.5L & 2.8L Engines)
- Torque Converter Clutch Electrical Diagnosis - Computer Command Control (4.3L, 5.0L & 5.7L Under 8500 GVW)
- Downshift Control Electrical Diagnosis - (4L60 - CCC TBI)
- Code 23, Throttle Position Sensor MISADJUSTED - Diesel Electronic Control System
- Code 24, Vehicle Speed Sensor Circuit - Diesel Electronic
- Torque Converter Clutch Electrical Diagnosis - Diesel Electronic Control System
- Removal & Installation - A/T
- Servicing - A/T
- Transmission Application
- Diagnosis - Torque Converter Clutch
- Clutches
- Manual Trans
- Overhaul - Gm 117 4-Speed
- Removal & Installation - M/T
- Servicing - M/T
- Automatic Trans
- External Pages