Repair and Diagnosis
- A L L Diagnostic Trouble Codes ( DTC )
- Relays and Modules
- Relays and Modules - Accessories and Optional Equipment
- Relays and Modules - Body and Frame
- Relays and Modules - Cooling System
- Relays and Modules - Cruise Control
- Relays and Modules - HVAC
- Relays and Modules - Lighting and Horns
- Relays and Modules - Powertrain Management
- Relays and Modules - Starting and Charging
- Relays and Modules - Steering and Suspension
- Relays and Modules - Windows and Glass
- Sensors and Switches
- Sensors and Switches - Brakes and Traction Control
- Sensors and Switches - Cooling System
- Sensors and Switches - Cruise Control
- Sensors and Switches - Engine
- Sensors and Switches - HVAC
- Sensors and Switches - Instrument Panel
- Sensors and Switches - Lighting and Horns
- Sensors and Switches - Powertrain Management
- Sensors and Switches - Restraints and Safety Systems
- Sensors and Switches - Starting and Charging
- Sensors and Switches - Steering and Suspension
- Sensors and Switches - Transmission and Drivetrain
- Sensors and Switches - Wiper and Washer Systems
- Maintenance
- Alignment
- Tune-up and Engine Performance Checks
- Timing Belt
- Timing Component Alignment Marks
- Drive Belt
- Filters
- Hoses
- Fluids
- Brake Bleeding
- Air Bag(s) Arming and Disarming
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Application and ID
- Service Intervals
- Severe Service Defined
- Routine Service
- Normal Service
- 7500 MI or 12000 KM
- 15000 MI or 24000 KM
- 22500 MI or 36000 KM
- 30000 MI or 48000 KM
- 37500 MI or 60000 KM
- 45000 MI or 72000 KM
- 52500 MI or 84000 KM
- 60000 MI or 96000 KM
- 67500 MI or 108000 KM
- 75000 MI or 120000 KM
- 82500 MI or 132000 KM
- 90000 MI or 144000 KM
- 97500 MI or 156000 KM
- 105000 MI or 168000 KM
- 112500 MI or 180000 KM
- 120000 MI or 192000 KM
- Severe Service
- 3000 MI or 4800 KM
- 6000 MI or 9600 KM
- 9000 MI or 14400 KM
- 12000 MI or 19200 KM
- 15000 MI or 24000 KM
- 18000 MI or 28800 KM
- 21000 MI or 33600 KM
- 24000 MI or 38400 KM
- 27000 MI or 43200 KM
- 30000 MI or 48000 KM
- 33000 MI or 52800 KM
- 36000 MI or 57600 KM
- 39000 MI or 62400 KM
- 42000 MI or 67200 KM
- 45000 MI or 72000 KM
- 48000 MI or 76800 KM
- 51000 MI or 81600 KM
- 54000 MI or 86400 KM
- 57000 MI or 91200 KM
- 60000 MI or 96000 KM
- 63000 MI or 100800 KM
- 66000 MI or 105600 KM
- 69000 MI or 110400 KM
- 72000 MI or 115200 KM
- 75000 MI or 120000 KM
- 78000 MI or 124800 KM
- 81000 MI or 129600 KM
- 84000 MI or 134400 KM
- 87000 MI or 139200 KM
- 90000 MI or 144000 KM
- 93000 MI or 148800 KM
- 96000 MI or 153600 KM
- 99000 MI or 158400 KM
- 102000 MI or 163200 KM
- 105000 MI or 168000 KM
- 108000 MI or 172800 KM
- 111000 MI or 177600 KM
- 114000 MI or 182400 KM
- 117000 MI or 187200 KM
- 120000 MI or 192000 KM
- 123000 MI or 196800 KM
- 126000 MI or 201600 KM
- 129000 MI or 206400 KM
- 132000 MI or 211200 KM
- 135000 MI or 216000 KM
- 138000 MI or 220800 KM
- 141000 MI or 225600 KM
- 144000 MI or 230400 KM
- 147000 MI or 235200 KM
- 150000 MI or 240000 KM
Service and Repair
Specifications
Technical Service Bulletins
- Engine, Cooling and Exhaust
- Engine
- Compression Check
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belts, Mounts, Brackets and Accessories
- Engine Lubrication
- Intake Manifold
- Lamps and Indicators - Engine
- Seals and Gaskets
- Sensors and Switches - Engine
- Timing Components
- Tune-up and Engine Performance Checks
- Water Pump
Testing and Inspection- Service and Repair
- Specifications
- Technical Service Bulletins
- Cooling System
- Coolant
- Coolant Level Indicator Lamp
- Coolant Reservoir
- Radiator Cooling Fan
- Engine - Coolant Temperature Sensor/Switch
- Heater Core
- Lamps and Indicators - Cooling System
- Radiator
- Radiator Cap
- Relays and Modules - Cooling System
- Sensors and Switches - Cooling System
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Thermostat
- Water Pump
- Testing and Inspection
Locations- Service and Repair
- Specifications
- Technical Service Bulletins
- Exhaust System
- Technical Service Bulletins
- Engine
- Powertrain Management
- Relays and Modules - Powertrain Management
- Sensors and Switches - Powertrain Management
- Tune-up and Engine Performance Checks
- Computers and Control Systems
- Air Temperature Sensor ( Ambient / Intake )
- Coolant Temperature Sensor/Switch (For Computer)
- Electronic Spark Control Module
- Engine Control Module
- Idle Speed/Throttle Actuator - Electronic
- Knock Sensor
- Malfunction Indicator Lamp
- Manifold Pressure/Vacuum Sensor
- Memory Calibration Unit
- Oil Pressure Sensor
- Output Driver
- Oxygen Sensor
- Power Steering Pressure Switch
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Shift Light
- Tach Filter
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
Description and Operation- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Symptom Related Diagnostic Procedures
- - A-E Charts & Related Test Procedures
- - Diagnosis By Symptom
- - Diagnostic Notes
- - Intermittent Diagnosis
- Backfires
- Cuts Out/Misses
- Detonation/Spark Knock/Pings
- Dieseling/Run-On
- Engine Cranks, But Will Not Run
- Excessive Exhaust Emissions (Odors)
- Excessive Odors - Fuel, Emissions
- Hard Starting
- Hard to Start
- Hesitation or Stalls on Acceleration
- Hesitation, Sag, Stumble
- High CO and HC at Idle
- High CO at High RPM
- High CO, Low or Normal HC at Idle
- High HC and CO at High RPM
- High HC at High RPM
- High HC, Low or Normal CO at Idle
- Lack of Power/Sluggish/Spongy/Stumble
- Misses Under Load
- Poor Fuel Economy
- Rough, Unstable, or Incorrect Idle, Stalling
- Stalls at Idle, Deceleration
- Starts, But Stalls
- Surge, Hesitation, Stall on Acceleration
- Surges at Steady Speed
- Surges/Chuggles
- Component Tests and General Diagnostics
- Scan Tool Testing and Procedures
Adjustments
Diagrams- Specifications
- Technical Service Bulletins
- Emission Control Systems
- Fuel Delivery and Air Induction
- Fuel Pressure
- Fuel Pressure Release
- Idle Speed
- Accelerator Pedal
- Air Cleaner Housing
- Fuel
- Fuel Filter
- Fuel Injector
- Fuel Pressure Regulator
- Fuel Pump
- Fuel Return Line
- Fuel Supply Line
- Fuel Tank
- Idle Speed/Throttle Actuator - Electronic
- Relays and Modules - Fuel Delivery and Air Induction
- Sensors and Switches - Fuel Delivery and Air Induction
- Throttle Body
- Throttle Cable/Linkage
- Throttle Position Sensor
- Turbocharger
Service Precautions- Application and ID
- Description and Operation
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
Tools and Equipment
- Ignition System
- Firing Order
- Ignition Timing
- Distributor
- Electronic Spark Control Module
- Ignition Cable
- Ignition Coil
- Ignition Control Module
- Knock Sensor
- Pick-Up Coil
- Relays and Modules - Ignition System
- Sensors and Switches - Ignition System
- Spark Plug
- Tach Filter
- Application and ID
- Description and Operation
- Locations
- Technical Service Bulletins
- Transmission Control Systems
- PROM - Programmable Read Only Memory
- Service Precautions
- Application and ID
- Locations
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Electrical Diagrams
- Technical Service Bulletins
- Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Actuators and Solenoids - A/T
- Band Apply Servo
- Case
- Clutch
- Automatic Transmission Dipstick - Dipstick Tube
- Fluid - A/T
- Fluid Filter - A/T
- Fluid Line/Hose
- Fluid Pan
- Fluid Pressure Sensor/Switch
- Fluid Pump
- Governor
- Output Shaft
- Parking Pawl
- Seals and Gaskets
- Sensors and Switches - A/T
- Shift Solenoid
- Shifter A/T
- Shift Linkage
- Speedometer Gear, A/T
- Throttle Valve Cable/Linkage
- Torque Converter Clutch
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Transmission Mount
- Transmission Position Sensor/Switch
- Transmission Pressure Test Port
- Transmission Speed Sensor
- Valve Body
- Application and ID
- Description and Operation
- Fluid Power Flow Description
- Detent Downshifts - Valves In 2ND Gear Position
- Drive Range - First Gear
- Drive Range - Second Gear
- Drive Range - Third Gear (TCC Applied)
- Drive Range - Third Gear (TCC Not Applied)
- Intermediate Range
- Low Range - Valves In 1ST Gear Position
- Neutral - Engine Running
- Park - Engine Running
- Part Throttle 3-2 Downshift
- Reverse Range
- General Description
- Transmission System Description
- Fluid Power Flow Description
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Binds In 3RD Gear
- Chatters/Slips In 1ST Gear
- Delay In Drive and Reverse
- Fluid Leaking From Vent Pipes
- No Drive In All Ranges
- No Drive In Any Forward Range
- No Drive In Drive or Intermediate Range
- No Drive In Drive Range
- No Full Throttle Downshift
- No Intermediate Range
- No Overrun Braking In Low
- No Upshifts, Delayed Upshifts or Full Throttle Upshifts
- No 2-3 Shift or 2-3 Shift Delay
- Noise In All Ranges
- Second Gear Starts
- Shifts 1-3, Misses Second Gear
- Shifts 3-1 at High Speeds For Passing Gear
- Slipping or Rough 1-2 Shift
- 2-3 Shift Rough or Delayed
- 2-3 Shift Soft, Slips or Early
- Component Tests and General Diagnostics
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Clutch
- Continuously Variable Transmission/Transaxle
- Differential Assembly
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Flywheel
- Manual Transmission/Transaxle
- Bell Housing
- Case
- Differential
- Drain Plug
- Fill Plug
- Fluid - M/T
- Input Shaft
- Output Shaft
- Reverse Gear Shaft
- Reverse Idler Gear
- Shifter M/T
- Shift Linkage
- Speedometer Gear, M/T
- Transmission Mount
- Application and ID
- Description and Operation
- Service and Repair
- Removal and Installation
- Overhaul
- Disassemble
- Subassembly Service
- Assemble
- Diagrams
- Specifications
- Technical Service Bulletins
- Sensors and Switches - Transmission and Drivetrain
- Transfer Case
- Transmission Control Systems
- Diagrams
- Technical Service Bulletins
- Brakes and Traction Control
- Antilock Brakes / Traction Control Systems
- Brake Bleeding
- Brake Warning Indicator
- Disc Brake System
- Drum Brake System
- Hydraulic System
- Parking Brake System
- Power Brake Assist
- Sensors and Switches - Brakes and Traction Control
- Service Precautions
- Testing and Inspection
- Service and Repair
- Technical Service Bulletins
- Starting and Charging
- Sensors and Switches - Starting and Charging
- Relays and Modules - Starting and Charging
- Battery
- Charging System
- Starting System
- Power and Ground Distribution
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Power and Ground Distribution
- Steering and Suspension
- Alignment
- Relays and Modules - Steering and Suspension
- Sensors and Switches - Steering and Suspension
- Steering
- Front Steering Knuckle
- Power Steering
- Sensors and Switches - Steering
- Steering Column
- Steering Gear
- Steering Shaft Coupler
- Steering Wheel
- Tie Rod
- Service Precautions
- Testing and Inspection
- Specifications
- Technical Service Bulletins
- Suspension
- Wheels and Tires
- Technical Service Bulletins
- Heating and Air Conditioning
- Air Conditioning Switch
- Air Door
- Blower Motor
- Blower Motor Relay
- Blower Motor Resistor
- Compressor HVAC
- Compressor Clutch Diode HVAC
- Compressor Clutch Relay
- Evaporator Core
- Expansion Block/Orifice Tube
- Heater Core
- Refrigerant
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
- Refrigerant Temperature Sensor
- Relays and Modules - HVAC
- Sensors and Switches - HVAC
- Service Port HVAC
- Vacuum Reservoir HVAC
- Service Precautions
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Restraints and Safety Systems
- Air Bag Systems
- Head Restraint System
- Seat Belt Systems
- Sensors and Switches - Restraints and Safety Systems
- Technical Service Bulletins
- Accessories and Optional Equipment
- Body and Frame
- Air Bag(s) Arming and Disarming
- Bumper
- Doors, Hood and Trunk
- Exterior Moulding / Trim
- Frame
- Interior Moulding / Trim
- Locks
- Mirrors
- Paint, Striping and Decals
- Relays and Modules - Body and Frame
- Roof and Associated Components
- Seats
- Weatherstrip
- Technical Service Bulletins
- Cruise Control
- Brake Switch (Cruise Control)
- Clutch Switch
- Cruise Control Module
- Cruise Control Servo
- Cruise Control Vacuum Vent Solenoid
- Relays and Modules - Cruise Control
- Sensors and Switches - Cruise Control
- Vacuum Pump
- Vacuum Vent Valve
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Instrument Panel, Gauges and Warning Indicators
- Audible Warning Device
- Brake Warning Indicator
- Cigarette Lighter
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Door Switch
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Low Fuel Lamp/Indicator
- Malfunction Indicator Lamp
- Odometer
- Oil Change Reminder Lamp
- Oil Pressure Gauge
- Oil Pressure Sender
- Oil Pressure Warning Lamp/Indicator
- Seat Belt Reminder Lamp
- Sensors and Switches - Instrument Panel
- Speedometer Head
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Tire Monitoring System
- Transmission Shift Position Indicator Lamp
- Volt Meter Gauge
- Description and Operation
- Testing and Inspection
- Locations
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Backup Lamp
- Brake Lamp
- Brake Light Switch
- Center Mounted Brake Lamp
- Courtesy Lamp
- Daytime Running Lamp
- Dimmer Switch
- Dome Lamp
- Door Switch
- Fog/Driving Lamp
- Hazard Warning Lamps
- Headlamp
- Horn
- Lamp Control Module
- License Plate Lamp
- Map Light
- Marker Lamp
- Parking Lamp
- Relays and Modules - Lighting and Horns
- Sensors and Switches - Lighting and Horns
- Tail Lamp
- Trunk Lamp
- Turn Signals
- Locations
- Diagrams
- Technical Service Bulletins
- Windows and Glass
- Wiper and Washer Systems
- Sensors and Switches - Wiper and Washer Systems
- Washer Fluid Level Indicator
- Windshield Washer Pump
- Wiper Blade
- Wiper Gear Box
- Wiper Motor
- Wiper Switch
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Application and ID
- Regular Production Option (RPO)
- Vehicle Identification Number (VIN)
- Description
- GM Automobile VIN Charts
- GM Light Duty & Multi-Purpose Truck VIN Charts
- 1982 Light Duty Trucks & Multi-Purpose Vehicle
- 1983 Light Duty Trucks & Multi-Purpose Vehicle
- 1984 Light Duty Trucks & Multi-Purpose Vehicle
- 1985 Light Duty Trucks & Multi-Purpose Vehicle
- 1986 Light Duty Trucks & Multi-Purpose Vehicle
- 1987 Light Duty Trucks & Multi-Purpose Vehicle
- 1988 Light Duty Trucks & Multi-Purpose Vehicle
- 1989 Light Duty Trucks & Multi-Purpose Vehicle
- 1990 Light Duty Trucks & Multi-Purpose Vehicles
- 1991 Light Duty Trucks & Multi-Purpose Vehicles
- 1992 Light Duty Trucks & Multi-Purpose Vehicles
- 1993 Light Duty Trucks & Multi-Purpose Vehicles
- 1994 Light Duty Trucks & Multi-Purpose Vehicles
- 1995 Light Duty Trucks & Multi-Purpose Vehicles
- 1996 Light Duty Trucks & Multi-Purpose Vehicles
- GM Medium & Heavy Duty Truck VIN Charts
- 1982 Medium & Heavy Duty Trucks
- 1983 Medium & Heavy Duty Trucks
- 1984 Medium & Heavy Duty Trucks
- 1985 Medium & Heavy Duty Trucks
- 1986 Medium & Heavy Duty Trucks
- 1987 Medium & Heavy Duty Trucks
- 1988 Medium & Heavy Duty Trucks
- 1989 Medium & Heavy Duty Trucks
- 1990 Medium & Heavy Duty Trucks
- 1991 Medium & Heavy Duty Trucks
- 1992 Medium & Heavy Duty Trucks
- 1993 Medium & Heavy Duty Trucks
- 1994 Medium & Heavy Duty Trucks
- 1995 Medium & Heavy Duty Trucks
- 1996 Medium & Heavy Duty Trucks
- Locations
- Component Locations
- Additional Information
- Miscellaneous Components
- A/C Clutch Diode
- A/C Compressor Clutch Control
- Blower Resistor Assembly
- Brake Cruise Release Valve
- Convenience Center
- Cruise Control Servo
- Direct Ignition System
- DRL In-Line Fuse A
- DRL In-Line Fuse B
- DRL In-Line Resistor
- Expansion Tube, A/C
- Fusible Link F
- Fusible Link J
- Fusible Link K
- Headlamp Door Controller
- Hydraulic Power Assembly
- Ignition Coil
- Radio
- Tachometer Filter
- Vacuum Tank
- Washer Pump
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- A/C High Pressure Cut-Out Switch
- A/C Low Pressure Cut-Out Switch
- A/C Pressure Cycling Switch
- Back-Up Lamp Switch
- Coolant Temperature Sender/Switch
- Front Door Handle Switch
- Fuel Pump Switch/Oil Pressure Switch
- Fuel Pump/Oil Pressure Sender/Switch
- Idle Speed Power Steering Pressure Switch
- Panel Dimmer Switch
- Safety Belt Switch
- Tailgate Ajar Switch
- Transaxle Position Switch
- Text Description
- Connector Locations
- Fuse and Fusible Link Locations
- Ground Locations
- Splice Locations
- Component Locations
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Exploded Views
- Connector Views
- Electrical Diagrams
- Cell References
- Convertible Top
- Cruise Control
- Heated Glass Element
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Lighting and Horns
- Powertrain Management
- System Diagram
- Computers and Control Systems
- Emission Control Systems
- Fuel Delivery and Air Induction
- Radiator Cooling Fan Motor
- Radio, Stereo, and Compact Disc
- Seat Belt Systems
- Starting and Charging
- Transmission and Drivetrain
- Trunk / Liftgate
- Windows
- Wiper and Washer Systems
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Additional Information
- Miscellaneous Components
- A/C Clutch Diode
- A/C Compressor Clutch Control
- Blower Resistor Assembly
- Brake Cruise Release Valve
- Convenience Center
- Cruise Control Servo
- Direct Ignition System
- DRL In-Line Fuse A
- DRL In-Line Fuse B
- DRL In-Line Resistor
- Expansion Tube, A/C
- Fusible Link F
- Fusible Link J
- Fusible Link K
- Headlamp Door Controller
- Hydraulic Power Assembly
- Ignition Coil
- Radio
- Tachometer Filter
- Vacuum Tank
- Washer Pump
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- A/C High Pressure Cut-Out Switch
- A/C Low Pressure Cut-Out Switch
- A/C Pressure Cycling Switch
- Back-Up Lamp Switch
- Coolant Temperature Sender/Switch
- Front Door Handle Switch
- Fuel Pump Switch/Oil Pressure Switch
- Fuel Pump/Oil Pressure Sender/Switch
- Idle Speed Power Steering Pressure Switch
- Panel Dimmer Switch
- Safety Belt Switch
- Tailgate Ajar Switch
- Transaxle Position Switch
- Text Description
- Connectors
- Fuse and Fusible Links
- Grounds
- Splices
- Specifications
- Electrical Specifications
- Mechanical Specifications
- Alignment
- Automatic Transmission Dipstick - Dipstick Tube
- Brake Caliper
- Brake Drum
- Brake Hose/Line
- Brake Master Cylinder
- Brake Rotor/Disc
- Case, A/T
- Clutch, M/T
- Computers and Control Systems
- Distributor, Ignition
- Drive/Propeller Shafts, Bearings and Joints
- EGR Valve
- Engine
- System Specifications
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belt
- Drive Belt Tensioner
- Engine Mount
- Intake Manifold
- Oil Pan, Engine
- Oil Pump, Engine
- Timing Belt
- Exhaust System
- Firing Order
- Flex Plate
- Fluid Line/Hose, A/T
- Fluid Pan, A/T
- Fluid Pressure Sensor/Switch, A/T
- Fluid Pump, A/T
- Flywheel
- Fuel Delivery and Air Induction
- Governor, A/T
- Heating and Air Conditioning
- Ignition Coil
- Manual Transmission/Transaxle
- Shift Linkage, A/T
- Shift Solenoid, A/T
- Shifter A/T
- Spark Plug
- Speedometer Gear, A/T
- Steering
- Suspension
- Throttle Valve Cable/Linkage, A/T
- Transmission Mount, A/T
- Transmission Pressure Test Port, A/T
- Transmission Speed Sensor, A/T
- Valve Body, A/T
- Water Pump
- Wheel Cylinder
- Wheel Stud / Lug Nut
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes