Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1992 GMC S15/T15 4WD P/U V6-262 4.3L VIN W CPIFACTORY OEM SERVICE PROCEDURE
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 - Power and Ground Distribution
- Relays and Modules - Powertrain Management
- Relays and Modules - Steering and Suspension
- Relays and Modules - Transmission and Drivetrain
- Relays and Modules - Wiper and Washer Systems
- 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 - Computers and Control Systems
- Coolant Temperature Sensor/Switch (For Computer)
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oil Pressure Sensor
- Oxygen Sensor
- Power Steering Pressure Switch
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Sensors and Switches - Emission Control Systems
- Sensors and Switches - Fuel Delivery and Air Induction
- Sensors and Switches - Ignition System
- Sensors and Switches - Computers and Control Systems
- 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 - Windows and Glass
- Sensors and Switches - Wiper and Washer Systems
- Maintenance
- Alignment
- Tune-up and Engine Performance Checks
- Fuel Pressure
- Idle Speed
- Air Cleaner Housing
- Fuel Filter
- Firing Order
- Ignition Timing
- Ignition Cable
- Distributor
- Spark Plug
- Compression Check
- Valve Clearance
Service Precautions
Testing and Inspection
Service and Repair
Technical Service Bulletins
Tools and Equipment
- 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
- 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
- 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
- Fuel Pressure
- Idle Speed
- Air Cleaner Housing
- Fuel Filter
- Firing Order
- Ignition Timing
- Ignition Cable
- Distributor
- Spark Plug
- Compression Check
- Valve Clearance
- Service Precautions
- Testing and Inspection
- Service and Repair
- Technical Service Bulletins
- Tools and Equipment
- 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
- Fan Shroud
- Heater Core
- Heater Hose
- 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
- 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
- Sensors and Switches - Computers and Control Systems
- Coolant Temperature Sensor/Switch (For Computer)
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oil Pressure Sensor
- Oxygen Sensor
- Power Steering Pressure Switch
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Sensors and Switches - Emission Control Systems
- Sensors and Switches - Fuel Delivery and Air Induction
- Sensors and Switches - Ignition System
- Sensors and Switches - Computers and Control Systems
- Tune-up and Engine Performance Checks
- Fuel Pressure
- Idle Speed
- Air Cleaner Housing
- Fuel Filter
- Firing Order
- Ignition Timing
- Ignition Cable
- Distributor
- Spark Plug
- Compression Check
- Valve Clearance
- Service Precautions
- Testing and Inspection
- Service and Repair
- Technical Service Bulletins
- Tools and Equipment
- Computers and Control Systems
- A/C Signal
- Air Temperature Sensor ( Ambient / Intake )
- Brake Signal
- Coolant Temperature Sensor/Switch (For Computer)
- Data Link Connector
- EGR Valve Position Sensor
- Electronic Spark Control Module
- Engine Control Module
- Fuel Pump Signal
- Idle Speed/Throttle Actuator - Electronic
- Idle/Throttle Speed Control Unit
- Knock Sensor
- Malfunction Indicator Lamp
- Manifold Pressure/Vacuum Sensor
- Memory Calibration Unit
- Oil Pressure Sensor
- Output Driver
- Overvoltage Protection Relay
- Oxygen Sensor
- Power Steering Pressure Switch
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Coolant Temperature Sensor/Switch (For Computer)
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oil Pressure Sensor
- Oxygen Sensor
- Power Steering Pressure Switch
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Shift Light
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Vehicle Speed Sensor Signal Buffer
- Voltage Signal
Description and Operation- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- - Checking the Basics
- - Flow of Diagnosis - Start Here
- - How to Use This Section
- - Intermittent Malfunctions
- - Preliminary Information
- Diagnostic Circuit Check
- Diagnostic Circuit Check - With Diagnostic Scan Tool
- Diagnostic Circuit Check - With OBD Scanner
- Diagnostic Circuit Check - Without Diagnostic Scan Tool
- 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)
- 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
- Surges at Steady Speed
- Surges/Chuggles
- Component Tests and General Diagnostics
- Initial Inspection and Diagnostic Overview
Adjustments- Locations
Diagrams- Specifications
- Technical Service Bulletins
- Tools and Equipment
- Circuit Tester
- Connector Test Adapter Kit
- Fillpipe Restrictor Dowel
- Fuel Line Quick - Connect Separator
- Fuel Pressure Gauge
- High Impedance Multimeter
- IAC System Monitor
- Injector Test Light
- Metri-Pack Terminal Remover
- PCM Connector Terminal Remover
- Scan Tool
- Unpowered Test Light
- Vacuum Pump With Gauge
- Weather Pack Terminal Remover
- Emission Control Systems
- Catalytic Converter
- Evaporative Emissions System
- Exhaust Gas Recirculation
- Fillpipe Restrictor
- Positive Crankcase Ventilation
- Sensors and Switches - Emission Control Systems
- Thermostatic Air Cleaner
- Application and ID
- Description and Operation
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Fuel Delivery and Air Induction
- Fuel Pressure
- Fuel Pressure Release
- Idle Speed
- Accelerator Pedal
- Air Cleaner Housing
- Fillpipe Restrictor
- Fuel
- Fuel Filler Cap
- Fuel Filter
- Fuel Injector
- Fuel Pressure Regulator
- Fuel Pressure Test Port
- Fuel Pressure Pulsation Damper
- Fuel Pump
- Fuel Pressure
- Fuel Pump Control Unit
- Fuel Pump Relay
- Service Precautions
- Description and Operation
- Testing and Inspection
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Fuel Rail
- Fuel Return Line
- Fuel Supply Line
- Fuel Tank
- Fuel Tank Unit
- 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
- Variable Induction System
- Service Precautions
- Description and Operation
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
- Circuit Tester
- Connector Test Adapter Kit
- Fillpipe Restrictor Dowel
- Fuel Line Quick Connect Separator
- Fuel Pressure Gauge
- High Impedance Multimeter
- IAC System Monitor
- Injector Test Light
- PCM Connector Terminal Remover
- Metri-Pack Terminal Remover
- Scan Tool
- Unpowered Test Light
- Vacuum Pump With Gauge
- Weather Pack Terminal Remover
- J-39021 Injector Tester
- Ignition System
- Firing Order
- Ignition Timing
- Distributor
- Electronic Spark Control Module
- Ignition Cable
- Ignition Coil
- Ignition Control Module
- Ignition Timing Connector
- Knock Sensor
- Pick-Up Coil
- Relays and Modules - Ignition System
- Sensors and Switches - Ignition System
- Spark Plug
- Description and Operation
- Locations
- Technical Service Bulletins
- Tools and Equipment
- Fillpipe Restrictor Dowel
- PCM Connector Terminal Remover
- Circuit Tester
- Connector Test Adapter Kit
- Fuel Line Quick Connect Separator
- Fuel Pressure Gauge
- High Impedance Multimeter
- IAC System Monitor
- Injector Test Light
- Metri-Pack Terminal Remover
- Scan Tool
- Unpowered Test Light
- Vacuum Pump With Gauge
- Weather Pack Terminal Remover
- Transmission Control Systems
- PROM - Programmable Read Only Memory
- Service Precautions
- Application and ID
- Description and Operation
- Locations
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Circuit Tester
- Connector Test Adapter Kit
- Fillpipe Restrictor Dowel
- Fuel Line Quick - Connect Separator
- Fuel Pressure Gauge
- High Impedance Multimeter
- IAC System Monitor
- Injector Test Light
- Metri-Pack Terminal Remover
- PCM Connector Terminal Remover
- Scan Tool
- Unpowered Test Light
- Vacuum Pump With Gauge
- Weather Pack Terminal Remover
- Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Actuators and Solenoids - A/T
- Accumulator
- Band Apply Servo
- Bell Housing
- Case
- Channel Plate
- Clutch
- Automatic Transmission Dipstick - Dipstick Tube
- Extension Housing
- Fluid - A/T
- Fluid Filter - A/T
- Fluid Line/Hose
- Fluid Pan
- Fluid Pressure Sensor/Switch
- Fluid Pump
- Governor
- Output Shaft
- Seals and Gaskets
- Sensors and Switches - A/T
- Shift Solenoid
- 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 Speed Sensor
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- 3L30 (180/180C) Automatic Transmission
- 4L60-E Automatic Transmission
- Converter Clutch Does Not Release
- Delay In Drive and Reverse
- Drives In Neutral
- Harsh Garage Shift
- Harsh Shifts
- High or Low Shift Points
- Inaccurate 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
- Slips In 1ST Gear
- Torque Converter Clutch Shudder
- Vibration In Reverse and Whining Noise In Park
- 1-2 Shift Slipping or Rough
- 1-2 Shift Speed - High or Low
- 1ST & 4TH Gear Only
- 2ND & 3RD Gear Only
- 2ND Gear Start In Drive Range
- 3-2 Flare or Tie-Up
- Component Tests and General Diagnostics
- Locations
- Service and Repair
- Procedures
- Removal and Replacement
- Overhaul
- Disassemble
- Subassembly Service & Transaxle Assemble
- 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
- Low & Reverse Clutch Assembly
- Low & Reverse Support Assembly
- Oil Pump Cover & Body Assembly
- Oil Pump Cover Assembly
- Oil Pump Cover Disassemble
- Oil Pump Disassembly
- Parking Pawl
- Pump Body Assembly
- Pump Body Disassembly
- Reaction Internal Gear & Carrier Assembly Inspection
- 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
- Carrier Bearings
- Description and Operation
- Testing and Inspection
- Adjustments
- Service and Repair
- Diagrams
- Differential Clutch
- Differential Lock
- Differential Axle Housing
- Drain Plug
- Fluid - Differential
- Pinion Bearing
- Pinion Flange
- Pinion Gear
- Seals and Gaskets
- Sensors and Switches - Differential
- Application and ID
- Testing and Inspection
- Service and Repair
- Front Axle
- On-Vehicle Service
- Unit Repair
- Rear Axle
- On-Vehicle Service
- Unit Repair
- Rear Axle - Locking/Limited Slip
- Disassembly of the Differential
- Cam Unit Disassembly 7-1/2, 7-5/8, and 8-1/2 Inch
- Cleaning and Inspection
- Cam Unit Assembly 7-1/2, 7-5/8, 8-1/2 and 8-5/8 Inch
- Adjustment of the Differential
- Left Side Gear Backlash Adjustment
- Right Side Gear Backlash Adjustment
- Thrust Block Clearance Adjustment
- Assembly of the Differential
- Semi-Floating Axle 7-1/2 Inch Ring Gear
- Semi-Floating Axle 7-5/8 Inch Ring Gear
- Rear Axle - Locking/Limited Slip
- Front Axle
- Diagrams
- Specifications
- Mechanical Specifications
- Fastener Strength Identification
- Front Axle
- Rear Axle
- Fluid Type Specifications
- Mechanical Specifications
- Technical Service Bulletins
- Differential Carrier
- Drive Axles, Bearings and Joints
- Axle Bearing
- Axle Shaft Assembly
- Constant Velocity Joint
- Constant Velocity Joint Boot
- Description and Operation
- Testing and Inspection
- Service and Repair
- Technical Service Bulletins
- Seals and Gaskets
- Wheel Bearing
- Wheel Hub
- Service and Repair
- Specifications
- Technical Service Bulletins
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Flywheel
- Lamps and Indicators - Transmission and Drivetrain
- Manual Transmission/Transaxle
- Bell Housing
- Case
- Extension Housing
- Fluid - M/T
- Input Shaft
- Mainshaft Bearing/Bushing
- Output Shaft
- Reverse Gear Shaft
- Shift Linkage
- Application and ID
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Relays and Modules - Transmission and Drivetrain
- Sensors and Switches - Transmission and Drivetrain
- Transfer Case
- Actuators and Solenoids - Transfer Case
- Control Module
- Fluid - Transfer Case
- Four Wheel Drive Indicator Lamp
- Four Wheel Drive Selector Switch
- Gear Sensor/Switch
- Lamps and Indicators - Transfer Case
- Relays and Modules - Transfer Case
- Sensors and Switches - Transfer Case
- Shifter Transfer Case
- Shift Linkage
- Speed Sensor
- Transfer Case Actuator
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Adjustments
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Transmission Control Systems
- Diagrams
- Technical Service Bulletins
- Brakes and Traction Control
- Antilock Brakes / Traction Control Systems
- 4WD Switch
- ABS Main Relay
- Brake Fluid Pump
- Differential Lock Switch
- Electronic Brake Control Module
- Hydraulic Assembly
- Wheel Speed Sensor
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Brake Bleeding
- 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
- Service and Repair
- Technical Service Bulletins
- Antilock Brakes / Traction Control Systems
- Starting and Charging
- Sensors and Switches - Starting and Charging
- Battery
- Charging System
- Alternator
- Diode Trio
- Application and ID
- Description and Operation
- Testing and Inspection
- Locations
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Voltage Regulator
- Service Precautions
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Alternator
- Starting System
- Clutch Switch
- Ignition Switch
- Key
- Neutral Safety Switch
- Starter Motor
- Starter Solenoid
- Application and ID
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Power and Ground Distribution
- Diode
- Fuse
- Fuse Block
- Fusible Link
- Ground Strap
- Grounding Point
- Multiple Junction Connector
- Relays and Modules - Power and Ground Distribution
- Relay Box
- Wiring Harness
- Locations
- Diagrams
- Technical Service Bulletins
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Battery Is Undercharged or Overcharged
- Engine Does Not Crank and Starter Solenoid Does Not Click
- GEN Indicator Does Not Light W/Ign. In Run and Engine Stopped
- Generator Indicator Stays on When Engine Is Running
- No Cranking, No Sound From Solenoid
- Slow Cranking, Solenoid Clicks or Chatters
- Starter Solenoid Clicks, Engine Does Not Crank or Cranks Slowly
- Undercharged Battery
- Component Tests and General Diagnostics
- Locations
- Diagrams
- Technical Service Bulletins
- Power and Ground Distribution
- Diode
- Fuse
- Fuse Block
- Fusible Link
- Ground Strap
- Grounding Point
- Multiple Junction Connector
- Relays and Modules - Power and Ground Distribution
- Relay Box
- Wiring Harness
- Locations
- Diagrams
- Technical Service Bulletins
- 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
- Accumulator HVAC
- Air Door
- Air Duct
- Blower Motor
- Blower Motor Relay
- Blower Motor Resistor
- Blower Motor Switch
- Compressor HVAC
- Compressor Clutch
- Compressor Clutch Bearing
- Compressor Clutch Coil
- Compressor Clutch Hub
- Compressor Shaft Seal
- Description and Operation
- Testing and Inspection
- Locations
- Service and Repair
- Specifications
- Technical Service Bulletins
- Compressor Clutch Diode HVAC
- Compressor Clutch Relay
- Condenser HVAC
- Control Assembly
- Coolant Temperature Sensor / Switch HVAC
- Coupler HVAC
- Evaporator Case
- Evaporator Core
- Evaporator Pressure Regulator
- Expansion Block/Orifice Tube
- Heater Core
- Heater Hose
- Hose/Line HVAC
- Housing Assembly HVAC
- Refrigerant
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
- Relays and Modules - HVAC
- Sensors and Switches - HVAC
- Service Port HVAC
- Vacuum Harness HVAC
- Vacuum Reservoir HVAC
- Service Precautions
- Description and Operation
- Testing and Inspection
- Adjustments
- Locations
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
- Restraints and Safety Systems
- Accessories and Optional Equipment
- Antitheft and Alarm Systems
- Cellular Phone
- Driver/Vehicle Information Display
- Radio, Stereo, and Compact Disc
- Compact Disc Player (CD)
- Radio/Stereo
- Remote Control
- Speaker
- Tape Player
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Relays and Modules - Accessories and Optional Equipment
- Relay Module
- Towing / Trailer System
- Technical Service Bulletins
- Body and Frame
- Bumper
- Doors, Hood and Trunk
- Doors
- Hood
- Trunk / Liftgate
- Technical Service Bulletins
- 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
- Tailgate
- Weatherstrip
- Technical Service Bulletins
- Cruise Control
- Brake Switch (Cruise Control)
- Clutch Switch
- 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
- Vehicle Speed Sensor/Transducer - Cruise Control
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Instrument Panel, Gauges and Warning Indicators
- Air Conditioning Indicator Lamp
- Audible Warning Device
- Audible Warning Device Control Module
- Charge Lamp/Indicator
- Cigarette Lighter
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Door Switch
- Driver/Vehicle Information Display
- Four Wheel Drive Indicator Lamp
- Fuel Distance/Mileage Module
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Malfunction Indicator Lamp
- Odometer
- Oil Pressure Gauge
- Oil Pressure Warning Lamp/Indicator
- Parking Brake Warning Switch
- Relays and Modules - Instrument Panel
- Sensors and Switches - Instrument Panel
- Speedometer Head
- Tachometer
- Temperature Gauge
- Temperature Sensor (Gauge)
- Temperature Switch (Warning Indicator)
- 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
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Fuel Gage Indicates Empty When There Is Fuel In the Tank
- Fuel Gage Indicates Full or Beyond at All Times
- Fuel Gage Is Inaccurate
- Oil Pressure Gage Is Not Accurate
- Tachometer Is Inoperative
- Temp Gage Indic. Hot W/ENG Cool Below Oper Temp and Ign In Run
- Temp Gage Indicates Cold All the Time
- Voltmeter Is Not Accurate
- Component Tests and General Diagnostics
- Locations
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Backup Lamp
- Backup Lamp Switch
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Brake Lamp
- Brake Light Switch
- Cargo Lamp
- Courtesy Lamp
- Daytime Running Lamp
- Dimmer Switch
- Dome Lamp
- Door Switch
- Fog/Driving Lamp
- Fog/Driving Lamp Relay
- Fog/Driving Lamp Switch
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Hazard Warning Lamps
- Headlamp
- Headlamp Dimmer Switch
- Headlamp Relay
- Headlamp Switch
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Technical Service Bulletins
- Horn
- License Plate Lamp
- Map Light
- Marker Lamp
- Parking Lamp
- Relays and Modules - Lighting and Horns
- Sensors and Switches - Lighting and Horns
- Tail Lamp
- Turn Signals
- Combination Switch
- Turn Signal Flasher
- Turn Signal Lamp
- Turn Signal Switch
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Underhood Lamp
- Vanity Lamp
- Application and ID
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Backup Lamp
- Windows and Glass
- Heated Glass Element
- Rear Defogger
- Sensors and Switches - Windows and Glass
- Windows
- Power Window Motor
- Power Window Switch
- Window Frame
- Window Glass
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Windshield
- Technical Service Bulletins
- Wiper and Washer Systems
- Relays and Modules - Wiper and Washer Systems
- Sensors and Switches - Wiper and Washer Systems
- Windshield Washer Pump
- Windshield Washer Reservoir
- Wiper Blade
- Wiper Control Module
- Wiper Gear Box
- Wiper Motor
- Wiper Switch
- Description and Operation
- Testing and Inspection
- 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
- A/C Clutch Diode
- Accumulator
- Battery Junction Block
- Blower Resistor
- Brake Proportioning Valve
- Central Port Injection
- Convenience Center
- Courtesy Lamp
- Crankcase Vent
- Electronic Spark Timing (EST) Distributor
- Expansion Tube, A/C
- Four Wheel Drive Indicator Assembly
- Fuel Injectors
- Fuel Pump & Sender
- Fuel Vapor Canister
- Fuse Panel
- Hazard Flasher, Less Digital Instrument Cluster
- Hazard Flasher, W/Digital Instrument Cluster
- Heater Defroster Door Actuator
- I/P Compartment Box Lamp
- I/P Courtesy Lamps
- Idle Air Control
- Ignition Coil
- Inline Diode
- Inline Diode, Four Wheel Drive Indicator Circuit
- Inline Fuse, Trailer Towing Harness
- Inline Fuse, Underhood Lamp
- Intake Manifold Tuning Valve
- Outside Air Door Actuator
- Panel Door Actuator
- Recirculation Air Door Actuator
- Remote Ignition Coil
- Service Engine Soon Light
- Torque Converter Clutch (TCC) Inline Diode
- Turn Signal Flasher
- Vacuum Check Valve
- Vacuum Tank
- Windshield Washer Pump
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- Back-Up Lamp Switch
- Cargo Lamp Switch
- Clutch Start Switch
- Clutch Switch--Cruise Control
- Coolant Temperature Switch
- Cruise Control Brake Switch Location
- Cruise Control Switch
- Door Jamb Switches (Pickup)
- Evaporator Pressure Control Switch
- Fog Lamp Switch
- Fuel Pump Oil Pressure Switch
- Hazard Flasher Switch
- Headlamp Dimmer Switch
- Headlamp Switch
- Horn Switch
- LH Front Door Jamb Switch
- LH Rear Door Jamb Switch
- Multi-Function Switch
- Neutral Safety Switch
- Oil Pressure Switch
- Park Brake Switch
- RH Front Door Jamb Switch
- Safety Belt Retractor Switch
- Selector Quadrant Switch
- Stoplamp Brake Switch
- Transfer Case Vacuum Switch
- Turn Signal Flasher Switch
- Connector Locations
- Connectors By Component
- Connectors By Number
- C100-C199
- C200-C299
- C200
- C200A
- C201
- C201A
- C202
- C202A
- C203
- C204
- C205
- C205A
- C206
- C207
- C208
- C209
- C210
- C211
- C212
- C215
- C216
- C217
- C218
- C219
- C220
- C222
- C223
- C224
- C225
- C227
- C228
- C229
- C230
- C231
- C232
- C233
- C234
- C235
- C237
- C238
- C245
- C247
- C249
- C250
- C251
- C252
- C253
- C255
- C256
- C258
- C260
- C261
- C262
- C263
- C264
- C265
- C266
- C267
- C268
- C269
- C270
- C273
- C274
- C275
- C280
- C284
- C289
- C290
- C291
- C292
- C293
- C294
- C295
- C297
- C298
- C299
- C300-C399
- C400-C499
- C500-C599
- C600-C699
- C900-C999
- Pictorial Views
- Fuse and Fusible Link Locations
- Ground Locations
- Splice Locations
- Grommet Locations
- Harness 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
- Doors
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Lighting and Horns
- Mirrors
- Powertrain Management
- Radio, Stereo, and Compact Disc
- Starting and Charging
- Trailer Adapter Kit
- Transmission and Drivetrain
- Windows
- Wiper and Washer Systems
- Mechanical Diagrams
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Additional Information
- Miscellaneous Components
- A/C Clutch Diode
- Accumulator
- Battery Junction Block
- Blower Resistor
- Brake Proportioning Valve
- Central Port Injection
- Convenience Center
- Courtesy Lamp
- Crankcase Vent
- Electronic Spark Timing (EST) Distributor
- Expansion Tube, A/C
- Four Wheel Drive Indicator Assembly
- Fuel Injectors
- Fuel Pump & Sender
- Fuel Vapor Canister
- Fuse Panel
- Hazard Flasher, Less Digital Instrument Cluster
- Hazard Flasher, W/Digital Instrument Cluster
- Heater Defroster Door Actuator
- I/P Compartment Box Lamp
- I/P Courtesy Lamps
- Idle Air Control
- Ignition Coil
- Inline Diode
- Inline Diode, Four Wheel Drive Indicator Circuit
- Inline Fuse, Trailer Towing Harness
- Inline Fuse, Underhood Lamp
- Intake Manifold Tuning Valve
- Outside Air Door Actuator
- Panel Door Actuator
- Recirculation Air Door Actuator
- Remote Ignition Coil
- Service Engine Soon Light
- Torque Converter Clutch (TCC) Inline Diode
- Turn Signal Flasher
- Vacuum Check Valve
- Vacuum Tank
- Windshield Washer Pump
- Modules
- Motors
- Relays
- Sensors
- Solenoids
- Switches
- Back-Up Lamp Switch
- Cargo Lamp Switch
- Clutch Start Switch
- Clutch Switch--Cruise Control
- Coolant Temperature Switch
- Cruise Control Brake Switch Location
- Cruise Control Switch
- Door Jamb Switches (Pickup)
- Evaporator Pressure Control Switch
- Fog Lamp Switch
- Fuel Pump Oil Pressure Switch
- Hazard Flasher Switch
- Headlamp Dimmer Switch
- Headlamp Switch
- Horn Switch
- LH Front Door Jamb Switch
- LH Rear Door Jamb Switch
- Multi-Function Switch
- Neutral Safety Switch
- Oil Pressure Switch
- Park Brake Switch
- RH Front Door Jamb Switch
- Safety Belt Retractor Switch
- Selector Quadrant Switch
- Stoplamp Brake Switch
- Transfer Case Vacuum Switch
- Turn Signal Flasher Switch
- Connectors
- Connectors By Component
- Connectors By Number
- C100-C199
- C200-C299
- C200
- C200A
- C201
- C201A
- C202
- C202A
- C203
- C204
- C205
- C205A
- C206
- C207
- C208
- C209
- C210
- C211
- C212
- C215
- C216
- C217
- C218
- C219
- C220
- C222
- C223
- C224
- C225
- C227
- C228
- C229
- C230
- C231
- C232
- C233
- C234
- C235
- C237
- C238
- C245
- C247
- C249
- C250
- C251
- C252
- C253
- C255
- C256
- C258
- C260
- C261
- C262
- C263
- C264
- C265
- C266
- C267
- C268
- C269
- C270
- C273
- C274
- C275
- C280
- C284
- C289
- C290
- C291
- C292
- C293
- C294
- C295
- C297
- C298
- C299
- C300-C399
- C400-C499
- C500-C599
- C600-C699
- C900-C999
- Pictorial Views
- Fuse and Fusible Links
- Grounds
- Splices
- Grommets
- Harness
- Specifications
- Electrical Specifications
- Mechanical Specifications
- Accumulator HVAC
- Air Duct
- Automatic Transmission/Transaxle
- Backing Plate
- Blower Motor
- Brake Caliper
- Brake Drum
- Brake Hose/Line
- Brake Master Cylinder
- Brake Rotor/Disc
- Clutch Master Cylinder
- Clutch Slave Cylinder
- Compressor HVAC
- Computers and Control Systems
- Condenser HVAC
- Differential Assembly
- Fastener Strength Identification
- Front Axle
- Rear Axle
- 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
- Oil Pan, Engine
- Oil Pump, Engine
- Evaporative Emission Control Canister
- Evaporator Case
- Evaporator Core
- Exhaust Manifold
- Firing Order
- Flywheel
- Fuel Delivery and Air Induction
- Heater Hose
- Hose/Line HVAC
- Ignition Coil
- Manual Transmission/Transaxle
- Parking Brake System
- Power Brake Assist
- Pressure Plate
- Spark Plug
- Steering and Suspension
- Transfer Case
- Vacuum Reservoir HVAC
- Water Pump
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Technical Service Bulletins
- Tools and Equipment
- Circuit Tester
- Connector Test Adapter Kit
- Fillpipe Restrictor Dowel
- Fuel Line Quick Connect Separator
- Fuel Pressure Gauge
- High Impedance Multimeter
- IAC System Monitor
- Injector Test Light
- Metri-Pack Terminal Remover
- PCM Connector Terminal Remover
- Scan Tool
- Unpowered Test Light
- Vacuum Pump With Gauge
- Weather Pack Terminal Remover
Diagnostic Trouble Codes
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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