Repair and Diagnosis
- A L L Diagnostic Trouble Codes ( DTC )
- Relays and Modules
- Relays and Modules - Accessories and Optional Equipment
- Relays and Modules - HVAC
- Relays and Modules - Powertrain Management
- Relays and Modules - Steering and Suspension
- 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
- 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
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
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
- Radiator Cap
- Sensors and Switches - Cooling System
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Thermostat
- Water Pump
- 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
- A/C Signal
- Air Temperature Sensor ( Ambient / Intake )
- Barometric Pressure Sensor
- Coolant Temperature Sensor/Switch (For Computer)
- Data Link Connector
- Electronic Spark Control Module
- Engine Control Module
- Ignition Hall Effect Sensor
- 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
- Oxygen Sensor
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
Service Precautions- Application and ID
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
- - Driver Complaint/Comments Charts
- - When to Use This Section
- Backfires
- Cuts Out/Misses
- Detonation/Spark Knock/Pings
- Dieseling/Run-On
- Excessive Exhaust Emissions (Odors)
- Hard to Start
- Hesitation, Sag, Stumble
- Lack of Power/Sluggish/Spongy/Stumble
- No Start - Engine Cranks OK
- Poor Fuel Economy
- Rough, Unstable, or Incorrect Idle, Stalling
- Stalls After Start - Cold
- Stalls After Start - Hot
- Surges/Chuggles
- Trouble Code Memory Loss
- - Diagnosis By Symptom - High Energy Ignition (HEI) System
- Component Tests and General Diagnostics
- Scan Tool Testing and Procedures
Adjustments
Diagrams- Technical Service Bulletins
Tools and Equipment
- Emission Control Systems
- Fuel Delivery and Air Induction
- Fuel Pressure
- Fuel Pressure Release
- Idle Speed
- Air Cleaner Housing
- Altitude Compensator
- Carburetor
- Accelerator Pump
- Carburetor Base Gasket
- Carburetor Float
- Choke Pull-off
- Choke Thermostat/Heater
- Choke Unloader
- Application and ID
- Description and Operation
- Adjustments
- Rochester E4M Series
- Choke Cover Removal
- Float Level
- Choke Coil Lever
- Choke Rod
- Air Bleed Hole Blocking Procedure
- Front Vacuum Break Adjustment
- Rear Vacuum Break Adjustment
- Air Valve Dashpot Adjustment
- Choke Unloader Adjustment
- Secondary Throttle Valve Lockout Adjustment
- Air Valve Spring Wind-Up
- Idle Load Compensator (ILC)
- Idle Speed Control (ISC)
- Throttle Position Sensor (TPS)
- Idle Mixture, Adjust
- On-Vehicle Adjustments
- Rochester E4M Series
- Service and Repair
- Disassemble
- Cleaning & Inspection
- Assemble
- Concealment Plug Removal
- Description
- Identification Location
- On Vehicle Adjustments
- Overhaul
- Specifications
- Technical Service Bulletins
- Dashpot
- Fuel
- Fuel Filter
- Fuel Injector
- Fuel Pump
- Fuel Tank
- Idle Speed/Throttle Actuator - Electronic
- Idle/Throttle Speed Control Unit
- Relays and Modules - Fuel Delivery and Air Induction
- Secondary Throttle Valve
- Sensors and Switches - Fuel Delivery and Air Induction
- Throttle Position Sensor
- Turbocharger
- Service Precautions
- Description and Operation
- Adjustments
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Ignition 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
- Clutch
- Fluid - A/T
- Fluid Pan
- Fluid Pump
- Governor
- Output Shaft
- Planetary Gears
- Sensors and Switches - A/T
- Shift Linkage
- Stator Shaft
- Torque Converter Clutch
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Transmission Position Sensor/Switch
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Symptom Related Diagnostic Procedures
- Converter Clutch Does Not Release
- Drives In Neutral
- First, Second & Third, No 3-4 Shift
- Harsh Delayed Upshifts
- Low or High Shift Points
- No Converter Clutch Operation
- No Drive
- No Drive In Reverse or Slips In Reverse
- No Engine Braking In D
- No Engine Braking In L1
- No Engine Braking In L2
- No Engine Braking In 3RD Gear
- No Part Throttle Downshifts
- No Part Throttle 4-3 Downshifts
- No 2-3 Shift-1ST & 2ND Only
- No 2-3 Shift
- Oil Pressure High or Low
- Rough Converter Clutch Application
- Rough 1-2 Shift
- Rough 2-3 Shift
- Rough 3-4 Shift
- Slipping 1-2 Shift
- Slipping 2-3 Shift
- Slips 3-4 Shift
- Will Not Hold In Park
- 1-2 Shift at Full Throttle Only
- 1ST Speed Only-No 1-2 Speed
- Component Tests and General Diagnostics
- Symptom Related Diagnostic Procedures
- Service and Repair
- Procedures
- Removal and Replacement
- Overhaul
- Disassemble
- Assemble
- Subassembly Service & Transaxle Assemble
- Inner Manual Linkage
- Low & Reverse Clutch Assembly
- Output Shaft
- Rear Internal Gear
- Roller Clutch & Rear Carrier Assembly
- Rear Sun Gear & Input Drum
- Front Sun Gear
- Front Carrier
- Front Internal Gear & Selective Thrust Washer
- Rear Selective Thrust Washer
- Direct Clutch
- Forward Clutch
- Forward & Direct Clutch
- Fourth Clutch
- Overrun Clutch & Overdrive Carrier
- Overrun Clutch
- Intermediate Band
- Intermediate Servo Piston Assembly
- Center Support
- Stator Shaft & Flange
- Overdrive Internal Gear
- Turbine Shaft
- Governor Assembly
- Control Valve Assembly
- Oil Pump Assembly
- Pump Body Assembly
- Oil Pump Cover Assembly
- Oil Pump Rotor & Slide End Clearance Check
- 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
- Manual Transmission/Transaxle
- Sensors and Switches - Transmission and Drivetrain
- Transfer Case
- Transmission Control Systems
- Diagrams
- Specifications
- 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
- Service Precautions
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Component Tests and General Diagnostics
- Alternate Parasitic Draw Test
- In-Vehicle Testing - Delcotron Type CS Charging System
- Parasitic Draw Test
- System Diagnosis - Charging System - Delcotron Type SI Integral
- Checking Circuit With Voltmeter
- System Diagnosis - Hitachi
- System Diagnosis - Starter - Delco/Remy
- System Diagnosis - Starter - Mitsubishi Starter
- Diagrams
- Specifications
- 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
- Ball Joint
- Control Arm
- Relays and Modules - Suspension
- Sensors and Switches - Suspension
- Stabilizer Bar
- Suspension Control ( Automatic - Electronic )
- Suspension Spring ( Coil / Leaf )
- Suspension Strut / Shock Absorber
- Wheel Bearing
- Description and Operation
- Adjustments
- Specifications
- Technical Service Bulletins
- Wheels and Tires
- Technical Service Bulletins
- Heating and Air Conditioning
- Air Conditioning Switch
- Air Door
- Blower Motor
- Compressor HVAC
- Control Assembly
- Control Module HVAC
- Evaporator Core
- Heater Core
- Housing Assembly HVAC
- Refrigerant
- Refrigerant Oil
- Relays and Modules - HVAC
- Sensors and Switches - HVAC
- Service Port HVAC
- Vacuum Check Valve HVAC
- Service Precautions
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Component Tests and General Diagnostics
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Restraints and Safety Systems
- Accessories and Optional Equipment
- Body and Frame
- Cruise Control
- Instrument Panel, Gauges and Warning Indicators
- Ammeter Gauge
- Audible Warning Device
- Brake Warning Indicator
- Charge Lamp/Indicator
- Cigarette Lighter
- Clock
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Low Fuel Lamp/Indicator
- Malfunction Indicator Lamp
- Odometer
- Oil Change Reminder Lamp
- Oil Level Warning Indicator
- 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
- Vacuum Gauge/Economy Meter
- Volt Meter Gauge
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Backup Lamp
- Brake Lamp
- Brake Light Switch
- Cornering Lamp
- Courtesy Lamp
- Dimmer Switch
- Dome Lamp
- Fog/Driving Lamp
- Hazard Warning Lamps
- Headlamp
- Horn
- License Plate Lamp
- Map Light
- Marker Lamp
- Parking Lamp
- Sensors and Switches - Lighting and Horns
- Tail Lamp
- Trunk Lamp
- Turn Signals
- Vanity Lamp
- Application and ID
- Diagrams
- Technical Service Bulletins
- Windows and Glass
- Wiper and Washer Systems
- 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
- Field Generator Bulb
- Hazard Flasher
- Idle Speed Control
- Ignition Key Warning Buzzer
- Illuminated Entry Timer
- Inline Fuse B
- Resistance Wire
- Seat Transmission
- Sentinel Control
- Sentinel Photocell
- Splitter
- Temperature Lever Valve
- Theft Deterrent Controller
- Throttle Servo
- Tone Generator
- Turn Flasher
- Turn Signal Flasher
- Turn/Hazard Flasher
- Vacuum Release Valve
- Wiper/Washer Assembly
- Wiper/Washer Control
- Motors
- Solenoids
- Switches
- Connector Locations
- Fuse and Fusible Link Locations
- Ground Locations
- Component Locations
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Exploded Views
- Connector Views
- Electrical Diagrams
- Engine Compartment Wiring Circuit
- Cell References
- Antenna
- Brake Warning Indicator
- Cruise Control
- Heated Glass Element
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Lighting and Horns
- System Diagram
- Backup Lamp
- Brake Lamp
- Cornering Lamp
- Courtesy Lamp
- Dome Lamp
- Courtesy/Dome 1983 88 Less Illuminated Entry
- Courtesy/Dome 1983 98 Four Door Less Illuminated Entry
- Courtesy/Dome 1983 98 Four Door W/Illuminated Entry
- Courtesy/Dome 1983 98 Two Door Less Illuminated Entry
- Dome 1983 88 W/Illuminated Entry
- Dome 1983 98 Two Door W/Illuminated Entry
- Rear Dome 1983 88 Custom Cruiser
- Hazard Warning Lamps
- Headlamp
- Horn
- License Plate Lamp
- Map Light
- Marker Lamp
- Parking Lamp
- Tail Lamp
- Trunk Lamp
- Turn Signals
- Vanity Lamp
- Mirrors
- Power Locks
- Powertrain Management
- Seat Belt Systems
- Seats
- Starting and Charging
- Sunroof / Moonroof
- Suspension Control ( Automatic - Electronic )
- Trailer Adapter Kit
- Transmission and Drivetrain
- Trunk / Liftgate
- Windows
- Wiper and Washer Systems
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Additional Information
- Miscellaneous Components
- Field Generator Bulb
- Hazard Flasher
- Idle Speed Control
- Ignition Key Warning Buzzer
- Illuminated Entry Timer
- Inline Fuse B
- Resistance Wire
- Seat Transmission
- Sentinel Control
- Sentinel Photocell
- Splitter
- Temperature Lever Valve
- Theft Deterrent Controller
- Throttle Servo
- Tone Generator
- Turn Flasher
- Turn Signal Flasher
- Turn/Hazard Flasher
- Vacuum Release Valve
- Wiper/Washer Assembly
- Wiper/Washer Control
- Motors
- Solenoids
- Switches
- Connectors
- Fuse and Fusible Links
- Grounds
- Specifications
- Electrical Specifications
- Air Temperature Sensor ( Ambient / Intake )
- Alternator
- Barometric Pressure Sensor
- Battery
- Coolant Temperature Sensor/Switch (For Computer)
- Fuel Injector
- Idle Speed/Throttle Actuator - Electronic
- Ignition Coil
- Ignition Timing
- Manifold Pressure/Vacuum Sensor
- Mixture Control Solenoid
- Pick-Up Coil, Ignition
- Throttle Position Sensor
- Voltage Regulator
- Mechanical Specifications
- Alignment
- Brake Drum
- Brake Master Cylinder
- Brake Rotor/Disc
- Distributor, Ignition
- Engine
- Exhaust Manifold
- Firing Order
- Fuel Delivery and Air Induction
- Pick-Up Coil, Ignition
- Spark Plug
- Starting and Charging
- Suspension
- Transmission and Drivetrain
- Wheel Cylinder
- Wheel Stud / Lug Nut
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Electrical Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes