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
  - Electronic Brake Control Module
  - Technical Service Bulletins
- Relays and Modules - Cooling System
- Relays and Modules - HVAC
- Relays and Modules - Lighting and Horns
- Relays and Modules - Power and Ground Distribution
  - Relay Box
- Relays and Modules - Powertrain Management
- Relays and Modules - Restraints and Safety Systems
  - Air Bag Control Module
  - Seat Occupant Classification Module - Air Bag
- Relays and Modules - Starting and Charging
  - Starter Relay
- Relays and Modules - Transmission and Drivetrain
  - Relays and Modules - A/T
    - Control Module
  - Relays and Modules - Transfer Case
    - Control Module
- Relays and Modules - Wiper and Washer Systems
  - Windshield Washer Relay
Sensors and Switches
- Sensors and Switches - Accessories and Optional Equipment
- Sensors and Switches - Body and Frame
- Sensors and Switches - Brakes and Traction Control
- Sensors and Switches - Cooling System
  - Engine - Coolant Temperature Sensor/Switch
    - Coolant Temperature Sensor/Switch (For Computer)
    - Diagrams
      - Diagnostic Aids
        Abbreviations and Meanings
        Arrows and Symbols
        Conversion - English/Metric
        Diagnostic Work Sheets
        Equivalents - Decimal and Metric
        Fasteners
        General Electrical Diagnosis Procedures
        Basic Knowledge Required
        Checking Aftermarket Accessories
        Circuit Testing
        Using Connector Test Adapters
        Probing Electrical Connectors
        Troubleshooting with a Digital Multimeter
        Troubleshooting With A Test Lamp
        Using Fused Jumper Wires
        Measuring Voltage
        Measuring Voltage Drop
        Measuring Frequency
        Testing For Continuity
        Testing For Short to Ground
        Testing For A Short to Voltage
        Testing For Intermittent Conditions and Poor Connections
        Inducing Intermittent Fault Conditions
        Testing For Electrical Intermittents
        Scan Tool Snapshot Procedure
        Wiring Repairs
        Circuit Protection - Fuses
        Circuit Protection - Circuit Breakers
        Circuit Protection - Fusible Links
        Repairing Damaged Wire Insulation
        Flat Wire Repairs
        GMLAN Wiring Repairs
        High Temperature Wiring Repairs
        Heated Oxygen Sensor (HO2S) Wiring Repairs
        Splicing Copper Wire Using Splice Clips
        Splicing Copper Wire Using Splice Sleeves
        Splicing Twisted or Shielded Cable
        Splicing Inline Harness Diodes
        SIR/SRS Wiring Repairs
        Connector Repairs
        Connector Position Assurance Locks
        Terminal Position Assurance Locks
        Bosch Connectors (BSK)
        Bosch Connectors (0.64)
        Bosch Connectors (2.8 JPT)
        Delphi Connectors (Weather Pack)
        Delphi Connectors (Push to Seat)
        Delphi Connectors (Pull to Seat)
        Delphi Connectors (Micro-Pack 100W)
        Delphi Connectors (Micro .64)
        Tyco/AMP Connectors (CM 42-Way)
        Yakazi Connectors
        Repairing Connector Terminals
        Registered and Non - Registered Trademarks
        Special Tools Ordering Information
        Thread Inserts
        Training
        US English/Metric Conversion
      - Electrical Diagrams
- Sensors and Switches - Engine
  - Oil Pressure Sender
  - Oil Pressure Sensor
- 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
  - Ignition Switch
- Sensors and Switches - Steering and Suspension
- Sensors and Switches - Transmission and Drivetrain
  - Sensors and Switches - A/T
  - Sensors and Switches - Transfer Case
    - Four Wheel Drive Selector Switch
    - Speed Sensor
- Sensors and Switches - Windows and Glass
  - Power Window Switch
- Sensors and Switches - Wiper and Washer Systems
Maintenance
- Alignment
- Tune-up and Engine Performance Checks
- Timing Component Alignment Marks
- Drive Belt
- Filters
- Hoses
- Fluids
- Brake Bleeding
- Air Bag(s) Arming and Disarming
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Jump Starting
- Service Intervals
- Technical Service Bulletins
Engine, Cooling and Exhaust
- Engine
- Cooling System
- Exhaust System
- Application and ID
  - Engine and Transmission Usage (C/K Chassis and Utility Applications)
  - Engine and Transmission Usage (Mid-Size Truck Applications)
- Technical Service Bulletins
Powertrain Management
- Relays and Modules - Powertrain Management
- Sensors and Switches - Powertrain Management
- Tune-up and Engine Performance Checks
- Computers and Control Systems
- Emission Control Systems
- Fuel Delivery and Air Induction
- Ignition System
- Transmission Control Systems
- PROM - Programmable Read Only Memory
- Locations
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Technical Service Bulletins
Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Differential Assembly
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Lamps and Indicators - Transmission and Drivetrain
  - Lamps and Indicators - A/T
    - Shift Indicator - A/T
- Manual Transmission/Transaxle
  - Fluid Line / Hose
  - Technical Service Bulletins
- Relays and Modules - Transmission and Drivetrain
  - Relays and Modules - A/T
    - Control Module
  - Relays and Modules - Transfer Case
    - Control Module
- Sensors and Switches - Transmission and Drivetrain
  - Sensors and Switches - A/T
  - Sensors and Switches - Transfer Case
    - Four Wheel Drive Selector Switch
    - Speed Sensor
- Transfer Case
- Transmission Control Systems
- Technical Service Bulletins
Brakes and Traction Control
- Antilock Brakes / Traction Control Systems
- Brake Bleeding
- Brake Pedal Assy
- Disc Brake System
- Hydraulic System
- Parking Brake System
- Power Brake Assist
- Relays and Modules - Brakes and Traction Control
  - Electronic Brake Control Module
  - Technical Service Bulletins
- Sensors and Switches - Brakes and Traction Control
- Specifications
Starting and Charging
- Sensors and Switches - Starting and Charging
  - Ignition Switch
- Relays and Modules - Starting and Charging
  - Starter Relay
- Battery
- Charging System
- Starting System
- Power and Ground Distribution
- Service Precautions
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Power and Ground Distribution
- Auxiliary Power Outlet
- Fuse
- Fuse Block
- Multiple Junction Connector
- Relays and Modules - Power and Ground Distribution
  - Relay Box
- Relay Box
- Wiring Harness
- Locations
- Service and Repair
  - Relay Replacement (Within an Electrical Center)
  - Relay Replacement (Attached to Wire Harness)
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
    - Ground Distribution
      - G101
      - G102
      - G103
      - G104
      - G109
      - G201
      - G105
      - G106
      - G107
      - G108
      - G110
      - G303
      - G302
      - G304
      - G305
      - G306
      - G401
      - G402
      - G403
    - Power Distribution
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Steering and Suspension
- Alignment
- Sensors and Switches - Steering and Suspension
- Steering
- Suspension
- Wheels and Tires
- Technical Service Bulletins
Heating and Air Conditioning
- Accumulator HVAC
- Air Door
  - Air Door Actuator / Motor
  - Service and Repair
    - Heating, Ventilation and Air Conditioning
    - HVAC System - Manual
- Air Duct
- Air Register
- Auxiliary Water Pump
- Auxiliary Water Pump Relay
- Blower Motor
- Blower Motor Relay
- Blower Motor Resistor
- Blower Motor Switch
- Cabin Air Filter / Purifier
- Cabin Ventilation Duct
- Cabin Ventilation Grille
- Compressor HVAC
  - Compressor Clutch
  - Locations
  - Service and Repair
  - Diagrams
    - Diagnostic Aids
    - Electrical Diagrams
- Compressor Clutch Relay
- Condenser HVAC
- Control Assembly
- Control Module HVAC
- Coupler HVAC
  - A/C Coupler O-ring
- Discharge Air Temperature Sensor / Switch
- Evaporator Case
- Evaporator Core
- Evaporator Drain Tube
- Expansion Block/Orifice Tube
- Expansion Valve
- Heater Control Valve
- Heater Core
- Heater Core Case
- Heater Hose
- Hose/Line HVAC
- Housing Assembly HVAC
- Refrigerant
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
  - Low Pressure Sensor / Switch
  - Locations
  - Service and Repair
  - Diagrams
- Relays and Modules - HVAC
  - Auxiliary Water Pump Relay
  - Blower Motor Relay
  - Compressor Clutch Relay
  - Control Module HVAC
- Sensors and Switches - HVAC
  - Blower Motor Switch
  - Discharge Air Temperature Sensor / Switch
  - Refrigerant Pressure Sensor / Switch
  - Solar Sensor
- Solar Sensor
- Description and Operation
  - HVAC System - Automatic
  - HVAC System - Manual
    - Air Delivery
    - Air Temperature
- Testing and Inspection
  - Initial Inspection and Diagnostic Overview
    - Diagnostic Starting Point - Heating, Ventilation and Air Conditioning
    - A/C System Performance Test
  - Symptom Related Diagnostic Procedures
  - Component Tests and General Diagnostics
  - Scan Tool Testing and Procedures
    - HVAC - Automatic
    - HVAC - Manual
- Locations
  - HVAC System - Manual
  - HVAC System - Automatic
- Service and Repair
  - Odor Correction
  - Refrigerant Recovery and Recharging
  - A/C Refrigerant System Oil Charge Replenishing
  - Flushing (Front Only System)
  - Flushing (Auxiliary System)
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
    - HVAC System - Automatic
    - HVAC System - Manual
- Specifications
  - Electrical Specifications
  - Mechanical Specifications
- Technical Service Bulletins
- Tools and Equipment
  - Heating, Ventilation and Air Conditioning
  - HVAC System - Manual
  - HVAC System - Automatic
Restraints and Safety Systems
- Air Bag Systems
- Head Restraint System
  - Head Rest
- Knee Diverter
- Relays and Modules - Restraints and Safety Systems
  - Air Bag Control Module
  - Seat Occupant Classification Module - Air Bag
- Seat Belt Systems
- Sensors and Switches - Restraints and Safety Systems
- Technical Service Bulletins
Accessories and Optional Equipment
- Accessory Delay Module
  - Accessory Delay Relay
  - Diagrams
    - Diagnostic Aids
    - Electrical Diagrams
- Antenna
- Antitheft and Alarm Systems
- Cellular Phone
  - Cellular Phone Microphone
  - Technical Service Bulletins
- Driver/Vehicle Information Display
- Emergency Contact Module
- Entertainment Systems
- Garage Door Opener Transmitter
- Global Positioning System
- Memory Positioning Systems
  - Memory Positioning Module
  - Testing and Inspection
- Navigation System
- Radio, Stereo, and Compact Disc
- Relays and Modules - Accessories and Optional Equipment
- Sensors and Switches - Accessories and Optional Equipment
- Steering Mounted Controls Transmitter
- Towing / Trailer System
  - Trailer Connector
- Trailer Connector
- Testing and Inspection
- Technical Service Bulletins
Body and Frame
- Air Bag(s) Arming and Disarming
- Body Control Systems
  - Body Control Module
- Auxiliary Step / Running Board
- Bumper
  - Front Bumper
    - Front Bumper Reinforcement
  - Rear Bumper
    - Rear Bumper Cover / Fascia
    - Rear Bumper Reinforcement
  - Specifications
- Cabin Ventilation Duct
- Cabin Ventilation Grille
- Doors, Hood and Trunk
  - Doors
  - Hood
  - Trunk / Liftgate
  - Technical Service Bulletins
- Exterior Moulding / Trim
  - Body Emblem
  - License Plate Bracket
  - Windshield Moulding / Trim
  - Specifications
- Fender
  - Front Fender
    - Front Fender Liner
    - Service and Repair
      - Fender Rail Bracket Replacement - Upper
      - Fender Replacement - Front
  - Rear Fender
    - Rear Fender Liner
- Frame
  - Body / Frame Mount Bushing
  - Cross-Member
  - Skid Plate
- Interior Moulding / Trim
  - Carpet
  - Console
  - Dashboard / Instrument Panel
  - Headliner
  - Passenger Assist Handle
  - Scuff Plate
  - Sun Visor
  - Trim Panel
  - Specifications
  - Technical Service Bulletins
- Locks
  - Door Locks
    - Door Lock Cylinder
  - Keyless Entry
  - Power Locks
    - Power Door Lock Actuator
    - Power Door Lock Switch
  - Trunk / Liftgate Lock
  - Trunk / Liftgate Lock Cylinder
- Mirrors
  - Memory Positioning Systems
    - Memory Positioning Module
    - Testing and Inspection
  - Testing and Inspection
  - Service and Repair
  - Technical Service Bulletins
- Paint, Striping and Decals
  - Paint
- Radiator Support
- Relays and Modules - Body and Frame
  - Door Module
  - Memory Positioning Module
  - Power Seat Control Module
  - Power Trunk / Liftgate Control Module
- Roof and Associated Components
  - Sunroof / Moonroof
- Seats
  - Head Rest
  - Head Restraint System
    - Head Rest
  - Memory Positioning Systems
    - Memory Positioning Module
    - Testing and Inspection
  - Power Seat Control Module
  - Power Seat Motor
  - Power Seat Switch
  - Seat Back
  - Seat Cover
  - Seat Cushion
  - Service and Repair
  - Technical Service Bulletins
- Sensors and Switches - Body and Frame
  - Hood Switch / Sensor
    - Hood Sensor/Switch (For Alarm)
  - Power Door Lock Switch
  - Power Seat Switch
  - Power Trunk / Liftgate Lock Switch
- Sound Proofing / Insulation
- Spoilers, Flaps, and Air Dams
  - Air Dam
- Weatherstrip
  - Front Door Weatherstrip
  - Front Door Window Glass Weatherstrip
  - Hood Weatherstrip
  - Liftgate Window Glass Weatherstrip
  - Rear Door Weatherstrip
  - Rear Door Window Glass Weatherstrip
  - Trunk / Liftgate Weatherstrip
- Service Precautions
  - Technician Safety Information
    - Basecoat/Clearcoat Paint Systems
    - Foam Sound Deadeners Caution
  - Vehicle Damage Warnings
- Testing and Inspection
  - Air/Wind Noise
  - Squeaks and Rattles
  - Vibration Diagnosis and Correction
  - Waterleaks
    - Diagnostic Information and Procedures
    - Repair Instructions
      - Body Waterleak Repair
      - Stationary Window Waterleak Repair
- Locations
- Service and Repair
- Specifications
  - Frame and Underbody
  - Body Front End
  - Body Rear End
- Technical Service Bulletins
Cruise Control
Instrument Panel, Gauges and Warning Indicators
- Air Bag Deactivation Indicator
- Audible Warning Device
- Cigarette Lighter
- Compass
- Dashboard / Instrument Panel
  - Air Bag(s) Arming and Disarming
  - Service and Repair
  - Technical Service Bulletins
  - Tools and Equipment
- Door/Trunk Ajar Indicator/Lamp
- Driver/Vehicle Information Display
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
  - Air Bag(s) Arming and Disarming
  - Description and Operation
  - Testing and Inspection
  - Locations
  - Service and Repair
    - Instrument Panel (I/P) Carrier Replacement
    - Instrument Panel Cluster (IPC) Replacement
  - Diagrams
  - Technical Service Bulletins
- Low Tire Pressure Indicator
- Maintenance Required Lamp/Indicator
- Malfunction Indicator Lamp
- Odometer
- Oil Change Reminder Lamp
- Oil Pressure Sender
- Outside Temperature Display
  - Outside Temperature Display Sensor
- Parking Brake Warning Switch
- Sensors and Switches - Instrument Panel
  - Fuel Gauge Sender
  - Outside Temperature Display Sensor
  - Parking Brake Warning Switch
- Shift Indicator - A/T
- Speedometer Head
- Tachometer
- Tire Monitoring System
  - Low Tire Pressure Indicator
  - Tire Pressure Sensor
  - Description and Operation
  - Testing and Inspection
  - Service and Repair
  - Specifications
  - Tools and Equipment
- Description and Operation
- Testing and Inspection
  - Initial Inspection and Diagnostic Overview
  - Symptom Related Diagnostic Procedures
  - Scan Tool Testing and Procedures
- Locations
  - I/P Cluster
  - Rear of the Engine
  - Right Side of the Engine - Front
  - Steering Wheel and Column
- Service and Repair
  - Console Replacement
  - Console Replacement - Overhead
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Lighting and Horns
- Ambient Light Sensor
- Backup Lamp
  - Backup Light Bulb
  - Description and Operation
  - Service and Repair
  - Diagrams
- Brake Lamp
- Brake Light Switch
- Cargo Lamp
- Center Mounted Brake Lamp
- Clearance Lamp
- Cornering Lamp
- Courtesy Lamp
- Daytime Running Lamp
- Dome Lamp
  - Dome Lamp Bulb
  - Service and Repair
- Fog/Driving Lamp
  - Fog/Driving Lamp Bulb
  - Fog/Driving Lamp Relay
  - Description and Operation
  - Adjustments
  - Service and Repair
  - Diagrams
- Hazard Warning Lamps
  - Hazard Warning Flasher
  - Diagrams
    - Diagnostic Aids
    - Electrical Diagrams
- Headlamp
  - Headlamp Bulb
  - Headlamp Alignment Actuator
  - Headlamp Relay
  - Headlamp Switch
  - Description and Operation
  - Adjustments
  - Service and Repair
  - Diagrams
- Horn
  - Horn Relay
  - Horn Switch
  - Description and Operation
  - Testing and Inspection
  - Locations
    - Horn Assembly
    - Steering Wheel and Column
  - Service and Repair
  - Diagrams
  - Specifications
- License Plate Lamp
- Map Light
  - Map Light Bulb
  - Diagrams
- Marker Lamp
  - Marker Lamp Bulb
  - Description and Operation
  - Diagrams
- Parking Lamp
  - Parking Lamp Relay
  - Parking Light Bulb
  - Description and Operation
  - Diagrams
- Relays and Modules - Lighting and Horns
  - Fog/Driving Lamp Relay
  - Headlamp Relay
  - Horn Relay
  - Parking Lamp Relay
- Sensors and Switches - Lighting and Horns
  - Ambient Light Sensor
  - Brake Light Switch
  - Combination Switch
  - Headlamp Switch
  - Horn Switch
  - Turn Signal Switch
- Tail Lamp
  - Tail Light Bulb
  - Description and Operation
  - Service and Repair
  - Diagrams
- Turn Signals
  - Combination Switch
  - Turn Signal Flasher
  - Turn Signal Lamp
    - Turn Signal Bulb
    - Diagrams
      - Park/Turn Signal Lamp
      - Turn Signal Lamp
  - Turn Signal Switch
  - Description and Operation
  - Diagrams
    - Diagnostic Aids
    - Electrical Diagrams
- Vanity Lamp
- Description and Operation
  - Exterior Lighting Systems
  - Interior Lighting Systems
- Testing and Inspection
  - Initial Inspection and Diagnostic Overview
  - Symptom Related Diagnostic Procedures
  - Scan Tool Testing and Procedures
- Locations
  - Accelerator and Brake Pedals
  - Behind Left Headlamp
  - Behind Right Headlamp
  - Dash Panel
  - Front of Vehicle (With RPO Code W49)
  - Front of Vehicle (With RPO Code X88)
  - Front of Vehicle (With RPO Code Z88/Z89)
  - Headlamp Switch
  - Headliner
  - Lower Left of the I/P
  - Overhead Console
  - Rear of Vehicle
  - Steering Wheel and Column
  - Vanity Mirror Lamp - Left (With RPO Code DH2)
  - Vanity Mirror Lamp - Right (With RPO Code DH2)
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Technical Service Bulletins
Windows and Glass
- Heated Glass Element
- Sensors and Switches - Windows and Glass
  - Power Window Switch
- Windows
- Windshield
- Technical Service Bulletins
Wiper and Washer Systems
- Check Valve
- Headlamp Washer Hose
- Headlamp Washer Pump
- Headlamp Washer Spray Nozzle
- Rain Sensor
- Relays and Modules - Wiper and Washer Systems
  - Windshield Washer Relay
- Sensors and Switches - Wiper and Washer Systems
  - Rain Sensor
  - Washer Fluid Level Switch
  - Windshield Washer Switch
  - Wiper Switch
- Washer Fluid Level Switch
- Windshield Washer Hose
- Windshield Washer Pump
- Windshield Washer Relay
- Windshield Washer Reservoir
- Windshield Washer Spray Nozzle
- Windshield Washer Switch
- Wiper Arm
- Wiper Blade
- Wiper Gear Box
- Wiper Motor
- Wiper Switch
- Description and Operation
  - Headlamp Washer System
  - Wiper/Washer System
  - Rear Wiper/Washer System
- Testing and Inspection
  - Initial Inspection and Diagnostic Overview
  - Symptom Related Diagnostic Procedures
  - Scan Tool Testing and Procedures
- Locations
  - Behind the Center of the I/P (With RPO Code W49)
  - Behind the Center of the I/P (With RPO Code X88)
  - Behind the Center of the I/P (With RPO Code Z88/Z89)
  - Liftgate
  - Outside Moisture Sensor (With RPO Code CE1)
  - Windshield Washer Fluid Reservoir
  - Windshield Wiper Motor
  - Windshield Wiper/Washer Switch
- Service and Repair
- Diagrams
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Technical Service Bulletins
Testing and Inspection
- Initial Inspection and Diagnostic Overview
  - Description and Operation
  - Initial Inspection
- Symptom Related Diagnostic Procedures
- Component Tests and General Diagnostics
- Programming and Relearning
Locations
- Component Locations
- Connector Locations
  - Master Connector List
  - Connectors By Number
- Ground Locations
  - Master Ground List
  - Grounds By Number
    - G100 - G199
      - G101
      - G102
      - G103
      - G104
      - G105
      - G106
      - G107
      - G108
      - G109
      - G110
    - G300 - G399
      - G302
      - G304
      - G305
      - G306
    - G400 - G499
      - G401
      - G403
- Splice Locations
- Harness Locations
Diagrams
- Diagnostic Aids
- Exploded Views
- Connector Views
- Electrical Diagrams
- Mechanical Diagrams
  - Tires
  - Wheel Stud / Lug Nut
- Fluid Diagrams
  - Automatic Transmission/Transaxle
- Vacuum and Vapor Hose Diagrams
  - Emission Control Systems
    - Emission Hose Routing Diagram
    - Evaporative Emissions (EVAP) Hose Routing Diagram
  - Fuel Delivery and Air Induction
- Components
- Connectors
  - Master Connector List
  - Connectors By Number
- Grounds
  - Master Ground List
  - Grounds By Number
    - G100 - G199
      - G101
      - G102
      - G103
      - G104
      - G105
      - G106
      - G107
      - G108
      - G109
      - G110
    - G300 - G399
      - G302
      - G304
      - G305
      - G306
    - G400 - G499
      - G401
      - G403
- Splices
- Harness
Specifications
- Electrical Specifications
- Mechanical Specifications
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
Technical Service Bulletins
Diagnostic Trouble Codes