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 - Cruise Control
- Relays and Modules - Instrument Panel
- Relays and Modules - Lighting and Horns
- Relays and Modules - Powertrain Management
- Relays and Modules - Steering and Suspension
- Relays and Modules - Wiper and Washer Systems
- 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 - 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
- Drive Belt
- Filters
- Hoses
- Fluids
- Brake Bleeding
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Application and ID
- Service Intervals
- Severe Service Defined
- Routine Service
- Normal Service
- 5000 MI or 8000 KM
- 10000 MI or 16000 KM
- 15000 MI or 24000 KM
- 20000 MI or 32000 KM
- 25000 MI or 40000 KM
- 30000 MI or 48000 KM
- 35000 MI or 56000 KM
- 40000 MI or 64000 KM
- 45000 MI or 72000 KM
- 50000 MI or 80000 KM
- 55000 MI or 88000 KM
- 60000 MI or 96000 KM
- 65000 MI or 104000 KM
- 70000 MI or 112000 KM
- 75000 MI or 120000 KM
- 80000 MI or 128000 KM
- 85000 MI or 136000 KM
- 90000 MI or 144000 KM
- 95000 MI or 152000 KM
- 100000 MI or 160000 KM
- 105000 MI or 168000 KM
- 110000 MI or 176000 KM
- 115000 MI or 184000 KM
- 120000 MI or 192000 KM
- Severe Service
- 2500 MI or 4000 KM
- 5000 MI or 8000 KM
- 7500 MI or 12000 KM
- 10000 MI or 16000 KM
- 12500 MI or 20000 KM
- 15000 MI or 24000 KM
- 17500 MI or 28000 KM
- 20000 MI or 32000 KM
- 22500 MI or 36000 KM
- 25000 MI or 40000 KM
- 27500 MI or 44000 KM
- 30000 MI or 48000 KM
- 32500 MI or 52000 KM
- 35000 MI or 56000 KM
- 37500 MI or 60000 KM
- 40000 MI or 64000 KM
- 42500 MI or 68000 KM
- 45000 MI or 72000 KM
- 47500 MI or 76000 KM
- 50000 MI or 80000 KM
- 52500 MI or 84000 KM
- 55000 MI or 88000 KM
- 57500 MI or 92000 KM
- 60000 MI or 96000 KM
- 62500 MI or 100000 KM
- 65000 MI or 104000 KM
- 67500 MI or 108000 KM
- 70000 MI or 112000 KM
- 72500 MI or 116000 KM
- 75000 MI or 120000 KM
- 77500 MI or 124000 KM
- 80000 MI or 128000 KM
- 82500 MI or 132000 KM
- 85000 MI or 136000 KM
- 87500 MI or 140000 KM
- 90000 MI or 144000 KM
- 92500 MI or 148000 KM
- 95000 MI or 152000 KM
- 97500 MI or 156000 KM
- 100000 MI or 160000 KM
- 102500 MI or 164000 KM
- 105000 MI or 168000 KM
- 107500 MI or 172000 KM
- 110000 MI or 176000 KM
- 112500 MI or 180000 KM
- 115000 MI or 184000 KM
- 117500 MI or 188000 KM
- 120000 MI or 192000 KM
Service and Repair
Specifications
Technical Service Bulletins
- Engine, Cooling and Exhaust
- Engine
- Access Cover
- 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
Description and Operation
Testing and Inspection- Service and Repair
- Specifications
- Technical Service Bulletins
- Cooling System
- Coolant
- Coolant Level Indicator Lamp
- Coolant Level Sensor
- Radiator Cooling Fan
- Engine - Coolant Temperature Sensor/Switch
- Heater Core
- Lamps and Indicators - Cooling System
- Radiator
- Radiator Cap
- Sensors and Switches - Cooling System
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Thermostat
- Water Pump
- Testing and Inspection
- 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
- Coolant Temperature Sensor/Switch (For Computer)
- Engine Control Module
- Malfunction Indicator Lamp
- Memory Calibration Unit
- Oil Pressure Sensor
- Output Driver
- Power Steering Pressure Switch
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Vehicle Speed Sensor
- Vehicle Speed Sensor Signal Buffer
- Testing and Inspection
Adjustments
Locations
Diagrams- Technical Service Bulletins
- Emission Control Systems
- Fuel Delivery and Air Induction
- Fuel Pressure
- Injection Timing
- Air Cleaner Housing
- Air Temperature Switch
- Cold Start Solenoid (For Injection Pump)
- Diesel MFI Pump
- Fuel
- Fuel Filter
- Fuel Injector
- Fuel Pressure Regulator
- Fuel Pump
- Fuel Shut-off Solenoid
- Fuel Tank
- Relays and Modules - Fuel Delivery and Air Induction
- Sensors and Switches - Fuel Delivery and Air Induction
- Turbocharger
- Diagrams
- Specifications
- Technical Service Bulletins
- Ignition System
- Glow Plug System
- Transmission Control Systems
- PROM - Programmable Read Only Memory
Service Precautions- Application and ID
- Diagrams
- Technical Service Bulletins
- Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Actuators and Solenoids - A/T
- Accumulator
- Band
- Band Apply Servo
- Case
- Clutch
- Fluid - A/T
- Fluid Pressure Sensor/Switch
- Fluid Pump
- Governor
- Input Shaft
- Lamps and Indicators - A/T
- Maintenance Indicator - A/T
- Output Shaft
- Output Shaft Bearing/Bushing
- Planetary Gears
- Pressure Regulating Solenoid
- Seals and Gaskets
- Sensors and Switches - A/T
- Shift Solenoid
- Shift Linkage
- Shift Modulator
- Speedometer Gear, A/T
- Throttle Valve Cable/Linkage
- Torque Converter
- Torque Converter Clutch
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Symptom Related Diagnostic Procedures
- 3L80/3L80HD (400/475) Automatic Transmission
- Direct Clutch Plates Burned
- Forward Clutch Plates Burned
- Intermediate Clutch Plates Burned
- Low or High Shift Points
- Moves Forward In Neutral
- No Detent Downshifts
- No Drive In Drive Range
- No Engine Braking In Low Range
- No Engine Braking In 2nd Speed
- No Movement In Reverse or Slips In Reverse
- No Part Throttle Downshifts
- No 2-3 Shift-1st & 2nd Only
- Noisy Transmission
- Oil Pressure High
- Oil Pressure Low
- Rough 1-2 Shift
- Rough 2-3 Shift
- Slips In All Ranges & on Starts
- Slips 1-2 Shift
- Slips 2-3 Shift
- Will Not Hold In Park
- 1-2 Shift at Full Throttle Only
- 1st Speed Only No 1-2 Shift
- 4L60 (700-R4) Automatic Transmission
- Converter Shudder
- Drives In Neutral
- First Speed Only-No Upshift
- High or Low Shift Points
- No Overrun Braking-Manual 3-2-1
- No Park or Will Not Hold In Park
- No Part Throttle Downshifts
- No Reverse or Slips In Reverse
- No Torque Converter Clutch Apply
- No Torque Converter Clutch Release
- Oil Pressure High or Low
- Slipping or Rough 1-2 Shift
- Slipping or Rough 2-3 Shift
- Slipping or Rough 3-4 Shift
- Slips In 1ST Gear
- 1-2 Full Throttle Shifts Only
- 3L80/3L80HD (400/475) Automatic Transmission
- Component Tests and General Diagnostics
- Symptom Related Diagnostic Procedures
- Locations
- Service and Repair
- Removal and Replacement
- Overhaul
- 4L60/4L60-E (700-R4) Automatic Transmission
- 700-R4 Automatic Transmission
- Case & Internal Components
- Case Assembly Inspection
- Check Valve Retainer & Ball Assembly
- Clutch Air Check
- Forward Clutch Sprag Assembly
- Inner Manual Linkage
- Input Carrier & Sun Gear
- Input Clutch Assembly
- Input Internal Gear & Output Shaft
- LO & Reverse Clutch Assembly
- LO & Reverse Support Assembly
- Oil Pump Cover & Body Assembly
- Oil Pump Cover Assembly
- Oil Pump Cover Disassemble
- Parking Pawl
- Pump Body Assembly
- Pump Body Disassembly
- Reaction Internal Gear & Carrier Assembly Inspection
- Reaction Internal Gear & Support
- Reaction Sun Gear & Shell
- Reverse Input & Input Clutches
- Reverse Input Clutch Assembly
- Third Accumulator Retainer & Ball Assembly
- Transmission Endplay Check
- 2-4 Band Assembly
- 3-4 Clutch Piston Travel Check
- External Components
- Case & Internal Components
- Diagrams
- Specifications
- Technical Service Bulletins
- Clutch
- Continuously Variable Transmission/Transaxle
- Differential Assembly
- Differential Carrier
- Differential Clutch
- Differential Axle Housing
- Fluid - Differential
- Pinion Bearing
- Pinion Gear
- Seals and Gaskets
- Application and ID
- Specifications
- Mechanical Specifications
- Fastener Strength Identification
- Rear Axle
- Fluid Type Specifications
- Mechanical Specifications
- Technical Service Bulletins
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flywheel
- Lamps and Indicators - Transmission and Drivetrain
- Manual Transmission/Transaxle
- 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
- 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
- Suspension
- Wheels and Tires
- Technical Service Bulletins
- Heating and Air Conditioning
- Air Duct
- Blower Motor
- Compressor HVAC
- Compressor Clutch
- Compressor Control Valve Assembly
- Compressor Shaft Seal
- Service Precautions
- Description and Operation
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
Tools and Equipment
- Coolant Temperature Sensor / Switch HVAC
- Evaporator Core
- Evaporator Pressure Regulator
- Heater Core
- High Pressure Safety Valve HVAC
- Refrigerant
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
- Sensors and Switches - HVAC
- Service Port HVAC
- Service Precautions
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Restraints and Safety Systems
- Accessories and Optional Equipment
- Body and Frame
- Access Cover
- Bumper
- Doors, Hood and Trunk
- Exterior Moulding / Trim
- Fender
- Frame
- Grille
- Interior Moulding / Trim
- Locks
- Paint, Striping and Decals
- Relays and Modules - Body and Frame
- Roof and Associated Components
- Seats
- Splash Guard
- Tailgate
- Weatherstrip
- Technical Service Bulletins
- Cruise Control
- Brake Switch (Cruise Control)
- Cruise Control Module
- Cruise Control Servo
- Cruise Control Servo Cable
- Cruise Control Switch
- Cruise Control Vacuum Vent Solenoid
- Relays and Modules - Cruise Control
- Sensors and Switches - Cruise Control
- Vacuum Vent Valve
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Component Tests and General Diagnostics
- Chart 1 - Servo Test
- Chart 2 - Servo Test
- Chart 3 - Off/On/Resume/Accel Switch Test
- Chart 4 - Off/On/Resume/Accel Switch Test
- Chart 5 - Release Switch Test (W/Auto. Trans)
- Chart 6 - Release Switch Test (W/Man. Trans)
- Chart 7 - Set/Coast Switch Test
- Control Switch Continuity Check
- Controller, Servo and Control Switch Check
- Speed Sender Test
- Adjustments
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Instrument Panel, Gauges and Warning Indicators
- Air Conditioning Indicator Lamp
- Audible Warning Device Control Module
- Brake Warning Indicator
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Door Switch
- Fuel Distance/Mileage Module
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Maintenance Indicator - A/T
- Malfunction Indicator Lamp
- Odometer
- Oil Pressure Gauge
- Oil Pressure Warning Lamp/Indicator
- Relays and Modules - Instrument Panel
- Sensors and Switches - Instrument Panel
- Speedometer Head
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Tire Monitoring System
- Transmission Shift Position Indicator Lamp
- Volt Meter Gauge
- Water In Fuel Indicator
- Description and Operation
- Testing and Inspection
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Backup Lamp
- Brake Lamp
- Brake Light Switch
- Courtesy Lamp
- Dimmer Switch
- Dome Lamp
- Door Switch
- Fog/Driving Lamp
- Hazard Warning Lamps
- Headlamp
- Horn
- License Plate Lamp
- Parking Lamp
- Relays and Modules - Lighting and Horns
- Sensors and Switches - Lighting and Horns
- Tail Lamp
- Turn Signals
- Service and Repair
- Technical Service Bulletins
- Windows and Glass
- Wiper and Washer Systems
- Relays and Modules - Wiper and Washer Systems
- Sensors and Switches - Wiper and Washer Systems
- Windshield Washer Pump
- Wiper Blade
- Wiper Control Module
- Wiper Gear Box
- Wiper Motor
- Wiper Switch
- Testing and Inspection
- Chart 1 Washer Pump Inoperative
- Chart 2 Wipers Low Speed Inoperative
- Chart 3 High Speed Only, Inoperative In Low
- Chart 4 Low Speed, Pulse Delay, and Mist Modes INOP
- Chart 5 Wipers Will Not Park
- Chart 6 Wiper Will Not Shut Off
- Chart 7 Intermittent Operation, Wiper Has Both Speeds
- Chart 8 Wiper Runs But Blades Don't Move
- Diagrams
- Technical Service Bulletins
- Application and ID
- Truck Body Identification
- 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
- Locations
- Component Locations
- Additional Information
- Miscellaneous Components
- Battery Junction Block
- Cold Advance
- Cold Advance & Fast Idle
- Coolant Probe
- Engine Heater
- Front Door Lamp (Less Lamp Group)
- Fuel Filter
- Fuel Shut Off Valve
- Fusible Link D
- Fusible Link E
- Fusible Link F
- Fusible Link H
- Glow Plug
- Glow Plug Controller
- Hazard Flasher
- Low Coolant Probe
- Servo Mounting
- Turn Flasher
- Vacuum Release Valve
- Modules
- Relays
- Sensors
- Solenoids
- Switches
- Back-Up Lamp Switch
- Clutch Release Switch
- Evaporator Pressure Control Switch
- Flow Switch
- Headlamp Dimmer Switch
- High Pressure Cutout Switch
- Hydro-Boost Pressure Warning Switch
- LH Door Jamb Switch
- Neutral Switch (Manual Transmission)
- RH Door Jamb Switch
- Stoplamp Switch
- TCC Brake Switch
- Turn Signal Switch
- Water Temperature Switch
- Text Description
- Connector Locations
- Fuse and Fusible Link Locations
- Ground Locations
- Splice Locations
- Component Locations
- Diagrams
- Diagram Information and Instructions
- Exploded Views
- Connector Views
- Electrical Diagrams
- Cell References
- Backup Lamp
- Brake Warning Indicator
- Cruise Control
- Dome Lamp
- Hazard Warning Lamps
- Headlamp
- Heating and Air Conditioning
- Horn
- Instrument Panel, Gauges and Warning Indicators
- License Plate Lamp
- Parking Lamp
- Power Locks
- Powertrain Management
- Radio, Stereo, and Compact Disc
- Starting and Charging
- Trailer Adapter Kit
- Transmission and Drivetrain
- Turn Signals
- Windows
- Wiper and Washer Systems
- Mechanical Diagrams
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Additional Information
- Miscellaneous Components
- Battery Junction Block
- Cold Advance
- Cold Advance & Fast Idle
- Coolant Probe
- Engine Heater
- Front Door Lamp (Less Lamp Group)
- Fuel Filter
- Fuel Shut Off Valve
- Fusible Link D
- Fusible Link E
- Fusible Link F
- Fusible Link H
- Glow Plug
- Glow Plug Controller
- Hazard Flasher
- Low Coolant Probe
- Servo Mounting
- Turn Flasher
- Vacuum Release Valve
- Modules
- Relays
- Sensors
- Solenoids
- Switches
- Back-Up Lamp Switch
- Clutch Release Switch
- Evaporator Pressure Control Switch
- Flow Switch
- Headlamp Dimmer Switch
- High Pressure Cutout Switch
- Hydro-Boost Pressure Warning Switch
- LH Door Jamb Switch
- Neutral Switch (Manual Transmission)
- RH Door Jamb Switch
- Stoplamp Switch
- TCC Brake Switch
- Turn Signal Switch
- Water Temperature Switch
- Text Description
- Connectors
- Fuse and Fusible Links
- Grounds
- Splices
- Specifications
- Electrical Specifications
- Mechanical Specifications
- Alignment
- Automatic Transmission/Transaxle
- Brake Caliper
- Brake Hose/Line
- Brake Master Cylinder
- Brake Rotor/Disc
- Clutch Master Cylinder
- Clutch Pedal Assembly
- Clutch Slave Cylinder
- Compressor HVAC
- Differential Assembly
- Fastener Strength Identification
- Rear Axle
- Drum Brake System
- Engine
- System Specifications
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belt
- Intake Manifold
- Oil Pan, Engine
- Oil Pressure Sensor
- Oil Pump, Engine
- Timing Cover
- Exhaust Manifold
- Firing Order
- Flywheel
- Fuel Delivery and Air Induction
- Glow Plug
- Manual Transmission/Transaxle
- Power Brake Assist
- Steering
- Suspension
- Water Pump
- Wheel Stud / Lug Nut
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes