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 - Brakes and Traction Control
- Relays and Modules - Cruise Control
- Relays and Modules - HVAC
- Relays and Modules - Instrument Panel
- Relays and Modules - Lighting and Horns
- Relays and Modules - Powertrain Management
- Relays and Modules - Steering and Suspension
- Sensors and Switches
- Sensors and Switches - Body and Frame
- 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
- 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
- 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
- 50000 MI or 80000 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
- 100000 MI or 160000 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
- 50000 MI or 80000 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
- 100000 MI or 160000 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
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
Testing and Inspection
Locations- Service and Repair
- Specifications
- Technical Service Bulletins
- Cooling System
- Coolant
- Coolant Level Indicator Lamp
- Radiator Cooling Fan
- Engine - Coolant Temperature Sensor/Switch
- Heater Core
- Lamps and Indicators - Cooling System
- Radiator
- Sensors and Switches - Cooling System
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Thermostat
- Water Pump
- Testing and Inspection
- 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 )
- Barometric Pressure Sensor
- Coolant Temperature Sensor/Switch (For Computer)
- Cranking Signal
- Data Link Connector
- Electronic Spark Control Module
- Engine Control Module
- Idle Speed/Throttle Actuator - Electronic
- Idle/Throttle Speed Control Unit
- Knock Sensor
- Malfunction Indicator Lamp
- Manifold Pressure/Vacuum Sensor
- Memory Calibration Unit
- Mixture Control Solenoid
- Oil Pressure Sensor
- Output Driver
- Oxygen Sensor
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Shift Light
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Vehicle Speed Sensor Signal Buffer
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
- 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 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
- Description and Use
- Limitations
- Mode Description
- Positions
- A/C Request - A/C Clutch
- BARO - Barometric Pressure
- Batt - AD Bat
- BLM - Block Learn Memory Cell
- BPW - Base Pulse Width
- CCP - Canister Purge
- Coolant Temperature
- Crossover Counts (Numeric Display)
- Desired RPM
- EGR Position
- EGR Signal
- Exhaust
- Fan
- Fan Request
- IAC - Idle Air Control
- Ignition/Crank - Ignition Switch Status
- Injector Pulse Width
- Int - Integrator & BLM-Block Learn Memory
- Knock Retard
- Knock Signal
- Loop Status (O/L - C/L)
- MAP - Manifold Absolute Pressure
- MAT - Manifold Air Temperature
- MPH/VSS
- O2 Sensor Voltage
- Park/Neutral Switch
- Power Steering Pressure Switch
- PPSW - Pump Pressure Switch
- RPM - Engine Speed
- Spark Advance
- TCC - Torque Converter Clutch
- Throttle Angle
- TPS - Throttle Position Sensor Voltage
- Transmission/Transaxle Gear Position Switch
- Trouble Codes
- VAC - Vacuum (Differential Pressure) Sensor
- WOT - Wide Open Throttle Switch
- Scan Tool Data List
- Serial Data
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 Filler Cap
- Fuel Filter
- Fuel Injector
- Fuel Pressure Regulator
- Fuel Pump
- Fuel Return Line
- Fuel Supply Line
- Fuel Tank
- Idle Speed/Throttle Actuator - Electronic
- Idle/Throttle Speed Control Unit
- 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
- Vacuum Restrictor
- Application and ID
- Description and Operation
- Locations
- Technical Service Bulletins
- Tools and Equipment
- Transmission Control Systems
- PROM - Programmable Read Only Memory
- Service Precautions
- Application and ID
- Locations
- 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
- Bell Housing
- Case
- Clutch
- Extension Housing
- Fluid - A/T
- Fluid Line/Hose
- Fluid Pan
- Fluid Pressure Sensor/Switch
- Fluid Pump
- Governor
- Output Shaft
- Output Shaft Bearing/Bushing
- Seals and Gaskets
- Sensors and Switches - A/T
- Shift Interlock
- Shift Solenoid
- Shifter A/T
- Shift Linkage
- Speedometer Gear, A/T
- Throttle Valve Cable/Linkage
- Torque Converter
- Torque Converter Clutch
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Transmission Position Sensor/Switch
- Transmission Pressure Test Port
- Transmission Speed Sensor
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Converter Clutch Does Not Release
- Delay In Drive and Reverse
- Drives In Neutral
- High or Low Shift Points
- No Drive In All Ranges
- No Drive In Drive Range
- No Overrun Braking-Manual 3-2-1
- No Park
- No Part Throttle or Delayed Downshifts
- No Torque Converter Clutch Apply
- No 1-2 Upshift, 1ST Speed Only
- No 2-3 Shift or 2-3 Shift Slipping, Rough or Hunting
- No 3-4 Shift or Rough 3-4 Shift
- Oil Out of the Vent
- Oil Pressure High or Low
- Ratcheting Noise
- Second Gear Start
- Slips In 1ST Gear
- Torque Converter Clutch Shudder
- Vibration In Reverse & Whining Noise In Park
- 1-2 Shift Slipping or Rough
- 1-2 Shift Speed - High or Low
- Component Tests and General Diagnostics
- Locations
- Service and Repair
- Removal and Replacement
- Overhaul
- Disassemble
- Subassembly Service & Transaxle Assemble
- Case & Internal Components
- Case Assembly Inspection
- Check Valve Retainer & Ball Assembly
- Forward Clutch Sprag Assembly
- Inner Manual Linkage
- Input Carrier & Sun Gear
- Input Clutch Assembly
- Input Internal Gear & Output Shaft
- Low & Reverse Clutch Assembly
- Low & Reverse Support Assembly
- Parking Pawl
- Reaction Internal Gear & Carrier Assembly Inspection
- Reaction Internal Gear & Support
- Reaction Sun Gear & Shell
- Third Accumulator Retainer & Ball 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
- Application and ID
- Specifications
- Mechanical Specifications
- Fastener Strength Identification
- Rear Axle
- Fluid Type Specifications
- Mechanical Specifications
- Technical Service Bulletins
- Drive Axles, Bearings and Joints
- Axle Shaft Assembly
- Seals and Gaskets
- Wheel Bearing
- Service and Repair
- Specifications
- Technical Service Bulletins
- Drive/Propeller Shafts, Bearings and Joints
- Flywheel
- 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
- ABS Light
- Brake Fluid Pump
- Brake Fluid Pump Relay
- Braking Sensor/Switch
- Electronic Brake Control Module
- Hydraulic Assembly
- Hydraulic Control Assembly - Antilock Brakes
- Wheel Speed Sensor
- Service Precautions
- Application and ID
- Description and Operation
- Testing and Inspection
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Brake Bleeding
- Brake Warning Indicator
- Disc Brake System
- Drum Brake System
- Hydraulic System
- Parking Brake System
- Power Brake Assist
- Relays and Modules - Brakes and Traction Control
- Sensors and Switches - Brakes and Traction Control
- Service Precautions
- Testing and Inspection
- Technical Service Bulletins
- Antilock Brakes / Traction Control Systems
- 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
- Specifications
- Technical Service Bulletins
- Heating and Air Conditioning
- Air Conditioning Switch
- Air Door
- Air Duct
- Blower Motor
- Blower Motor Relay
- Blower Motor Resistor
- Compressor HVAC
- Compressor Clutch Diode HVAC
- Compressor Clutch Relay
- Condenser HVAC
- Control Assembly
- Evaporator Core
- Expansion Block/Orifice Tube
- Expansion Valve
- Heater Core
- Housing Assembly HVAC
- Refrigerant
- Refrigerant Oil
- Relays and Modules - HVAC
- Sensors and Switches - HVAC
- Service Port HVAC
- Vacuum Reservoir HVAC
- Service Precautions
- Description and Operation
- 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
- Frame
- Interior Moulding / Trim
- Locks
- Mirrors
- Paint, Striping and Decals
- Relays and Modules - Body and Frame
- Roof and Associated Components
- Seats
- Sensors and Switches - Body and Frame
- Unibody
- 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
- Adjustments
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Instrument Panel, Gauges and Warning Indicators
- ABS Light
- Air Conditioning Indicator Lamp
- Audible Warning Device
- Audible Warning Device Control Module
- Brake Warning Indicator
- Cigarette Lighter
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Door Switch
- Fuel Distance/Mileage Module
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Malfunction Indicator Lamp
- Odometer
- Oil Pressure Gauge
- Oil Pressure Sender
- Oil Pressure Warning Lamp/Indicator
- Parking Brake Warning Switch
- 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
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Backup Lamp
- Brake Lamp
- Brake Light Switch
- Courtesy Lamp
- Daytime Running Lamp
- Dimmer Switch
- Dome Lamp
- Door Switch
- Fog/Driving Lamp
- Hazard Warning Lamps
- Headlamp
- Horn
- License Plate Lamp
- Marker Lamp
- Parking Lamp
- Relays and Modules - Lighting and Horns
- Sensors and Switches - Lighting and Horns
- Tail Lamp
- Turn Signals
- Vanity Lamp
- Diagrams
- Technical Service Bulletins
- Windows and Glass
- Wiper and Washer Systems
- 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
- Blower Resistor
- Blower Resistors
- Convenience Center
- Cruise Control Servo
- Digital Ratio Adapter
- Engine Heater
- Expansion Tube, A/C
- Fuse Block
- Fusible Link B
- Fusible Link C
- Fusible Link D
- Hazard Flasher
- Horn Brush/Slip Ring
- Idle Air Control
- Inline Fuse
- Multi-Function Lever
- PCV Valve
- Radio Control Head
- Sliding Door Contact Buttons
- Sliding Door Contacts
- Turn Signal Flasher
- Vacuum Release Valve
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- 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
- Antilock Brakes / Traction Control Systems
- Cruise Control
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Lighting and Horns
- Mirrors
- Power Locks
- Powertrain Management
- Radio, Stereo, and Compact Disc
- Seats
- Starting and Charging
- Trailer Adapter Kit
- Transmission and Drivetrain
- Windows
- Wiper and Washer Systems
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Additional Information
- Miscellaneous Components
- Battery Junction Block
- Blower Resistor
- Blower Resistors
- Convenience Center
- Cruise Control Servo
- Digital Ratio Adapter
- Engine Heater
- Expansion Tube, A/C
- Fuse Block
- Fusible Link B
- Fusible Link C
- Fusible Link D
- Hazard Flasher
- Horn Brush/Slip Ring
- Idle Air Control
- Inline Fuse
- Multi-Function Lever
- PCV Valve
- Radio Control Head
- Sliding Door Contact Buttons
- Sliding Door Contacts
- Turn Signal Flasher
- Vacuum Release Valve
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- Text Description
- Connectors
- Fuse and Fusible Links
- Grounds
- Splices
- Specifications
- Electrical Specifications
- Alternator
- Battery
- Computers and Control Systems
- Fuel Injector
- Ignition Cable
- Ignition Coil
- Ignition Timing
- Pick-Up Coil, Ignition
- Starter Solenoid
- Voltage Regulator
- Wheel Speed Sensor
- Mechanical Specifications
- Antilock Brakes / Traction Control Systems
- Automatic Transmission/Transaxle
- Brake Caliper
- Brake Drum
- Brake Hose/Line
- Brake Master Cylinder
- Brake Rotor/Disc
- Case, M/T
- Computers and Control Systems
- Differential Assembly
- Fastener Strength Identification
- Rear Axle
- Distributor, Ignition
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- EGR Valve
- Engine
- System Specifications
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belt
- Engine Mount
- Intake Manifold
- Oil Pan, Engine
- Oil Pressure Sensor
- Oil Pump, Engine
- Exhaust Manifold
- Extension Housing, M/T
- Firing Order
- Flywheel
- Fuel Delivery and Air Induction
- Mainshaft Bearing/Bushing, M/T
- Parking Brake System
- Pick-Up Coil, Ignition
- Power Brake Assist
- Shift Linkage, M/T
- Spark Plug
- Steering and Suspension
- Transmission Mount, M/T
- Water Pump
- Wheel Cylinder
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Electrical Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes