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
  - Power Door Lock Relay
- Relays and Modules - Brakes and Traction Control
  - Electronic Brake Control Module
- Relays and Modules - Cooling System
  - Radiator Cooling Fan Motor Relay
- Relays and Modules - HVAC
- Relays and Modules - Instrument Panel
  - Audible Warning Device Control Module
- Relays and Modules - Lighting and Horns
- Relays and Modules - Power and Ground Distribution
  - Power Distribution Relay
  - 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 - Steering and Suspension
  - Relays and Modules - Wheels and Tires
    - Tire Pressure Monitor Receiver / Transponder
- Relays and Modules - Transmission and Drivetrain
  - Relays and Modules - A/T
    - Control Module
- Relays and Modules - Windows and Glass
  - Heated Glass Element Relay
  - Power Window Relay
- Relays and Modules - Wiper and Washer Systems
  - Wiper 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
- Sensors and Switches - Engine
  - 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
  - Battery Current Sensor
  - Ignition Switch
- Sensors and Switches - Steering and Suspension
- Sensors and Switches - Transmission and Drivetrain
  - Sensors and Switches - A/T
- Sensors and Switches - Windows and Glass
  - Power Window Switch
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
- Seat Belt Arming and Disarming
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Vehicle Lifting
- Service Intervals
- Specifications
- Technical Service Bulletins
Engine, Cooling and Exhaust
- Engine
- Cooling System
- Exhaust System
- Application and ID
  - Vehicle, Engine, Transmission ID and VIN Location, Derivative and Usage
  - RPO Code List
- 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
- Diagrams
- Specifications
- Technical Service Bulletins
Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
  - Actuators and Solenoids - A/T
- Automatic Transmission/Transaxle
- Differential Assembly
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Relays and Modules - Transmission and Drivetrain
  - Relays and Modules - A/T
    - Control Module
- Sensors and Switches - Transmission and Drivetrain
  - Sensors and Switches - A/T
- Transmission Control Systems
- Service Precautions
  - Pin Reuse Caution
  - Retaining Ring Reuse Caution
- Application and ID
  - Vehicle, Engine, Transmission ID and VIN Location, Derivative and Usage
  - RPO Code List
- 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
- Sensors and Switches - Brakes and Traction Control
- Service Precautions
- Testing and Inspection
  - Electronic Brake Control Module Scan Tool Information (Without JL4)
  - Electronic Brake Control Module Scan Tool Information (With JL4)
Starting and Charging
- Sensors and Switches - Starting and Charging
  - Battery Current Sensor
  - Ignition Switch
- Relays and Modules - Starting and Charging
  - Starter Relay
- Battery
- Charging System
- Starting System
- Power and Ground Distribution
- Description and Operation
  - Electrical Power Management (Diesel)
  - Electrical Power Management (Gasoline)
- Testing and Inspection
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Power and Ground Distribution
- Auxiliary Power Outlet
- Fuse
- Fuse Block
- Ground Strap
- Grounding Point
- Multiple Junction Connector
- Power Distribution Relay
- Relays and Modules - Power and Ground Distribution
  - Power Distribution Relay
  - Relay Box
- Relay Box
- Description and Operation
- Testing and Inspection
- Locations
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Steering and Suspension
- Alignment
- Relays and Modules - Steering and Suspension
  - Relays and Modules - Wheels and Tires
    - Tire Pressure Monitor Receiver / Transponder
- 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
- Air Duct
- Air Register
- Ambient Temperature Sensor / Switch HVAC
- Auxiliary Cabin Heater
  - Auxiliary Cabin Heater Control Module
  - Auxiliary Cabin Heater Fuel Pump
  - Auxiliary Cabin Heater Ignitor
  - Service and Repair
- Blower Motor
  - Auxiliary Blower Motor
  - Locations
  - Service and Repair
  - Diagrams
- Blower Motor Relay
- Blower Motor Resistor
- Blower Motor Switch
- Cabin Ventilation Grille
- Compressor HVAC
  - Compressor Clutch
  - Compressor Clutch Coil
  - Locations
  - Service and Repair
    - Procedures
    - Removal and Replacement
- Compressor Clutch Relay
- Condenser HVAC
- Control Assembly
- Control Module HVAC
- Coupler HVAC
  - A/C Coupler O-ring
- Evaporator Core
- Expansion Block/Orifice Tube
- Heater Core
- Heater Core Case
- Heater Hose
- Hose/Line HVAC
- Housing Assembly HVAC
- Refrigerant
- Refrigerant Filter
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
- Relays and Modules - HVAC
  - Auxiliary Cabin Heater Control Module
  - Blower Motor Relay
  - Compressor Clutch Relay
  - Control Module HVAC
- Sensors and Switches - HVAC
  - Ambient Temperature Sensor / Switch HVAC
  - Blower Motor Switch
  - Refrigerant Pressure Sensor / Switch
- Vacuum Pump HVAC
- Vacuum Reservoir HVAC
- Service Precautions
- Description and Operation
  - Air Delivery
  - Air Temperature
    - Part 1
    - Part 2
- Testing and Inspection
  - Initial Inspection and Diagnostic Overview
    - A/C Diagnostics Chart
    - Air Conditioning (A/C) System Performance Test
  - Symptom Related Diagnostic Procedures
  - Component Tests and General Diagnostics
- Service and Repair
  - Flushing
  - Odor Correction
  - Refrigerant Recovery and Recharging
- Diagrams
  - Diagram Information and Instructions
  - Diagnostic Aids
  - Electrical Diagrams
  - Vacuum and Vapor Hose Diagrams
- Specifications
  - Heating, Ventilation, and Air Conditioning
  - HVAC - Manual
- Technical Service Bulletins
- Tools and Equipment
Restraints and Safety Systems
- Repairs and Inspections Required After a Collision
- Air Bag Systems
- 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
- Service Precautions
  - SIR Inflator Module Handling and Storage Warning
  - SIR Warning
Accessories and Optional Equipment
- Antenna
  - Antenna Mast
  - Antenna, Radio
    - Antenna Cable
  - Locations
  - Service and Repair
    - Digital Radio, Mobile Telephone, and Vehicle Location Base Replacement
    - Wireless Communication Interface Antenna Replacement
- Antitheft and Alarm Systems
  - Alarm Module
  - Keyless Entry
  - Description and Operation
    - Immobilizer
    - Remote Vehicle Speed Limiting
  - Testing and Inspection
  - Service and Repair
  - Diagrams
- Cellular Phone
  - Cellular Phone Microphone
  - Communications Control Module
  - Testing and Inspection
  - Technical Service Bulletins
- Central Control Module
- Collision Avoidance and Parking Assist Systems
  - Parking Assist Control Module
  - Parking Assist Distance Sensor
  - Description and Operation
    - Object Detection Description and Operation (UD7)
    - Object Detection Description and Operation (with rear camera UVC)
  - Testing and Inspection
    - Symptom Related Diagnostic Procedures
    - Scan Tool Testing and Procedures
  - Service and Repair
    - Rear Object Alarm Control Module Replacement
    - Rearview Camera Image Display Module Replacement
  - Diagrams
- Driver / Vehicle Information Display Switch
- Emergency Contact Button
- Emergency Contact Module
- Entertainment Systems
  - Auxiliary Input / Output Jack
  - Technical Service Bulletins
- Navigation System
  - Navigation Module
  - Technical Service Bulletins
- Pedal Positioning System
  - Pedal Positioning Sensor
- Radio, Stereo, and Compact Disc
  - Compact Disc Player (CD)
  - Radio/Stereo
  - Speaker
  - Testing and Inspection
    - Digital Radio Receiver Programming and Setup
    - Radio Programming and Setup
- Relays and Modules - Accessories and Optional Equipment
  - Alarm Module
  - Central Control Module
  - Communications Control Module
  - Emergency Contact Module
  - Navigation Module
  - Parking Assist Control Module
- Sensors and Switches - Accessories and Optional Equipment
  - Parking Assist Distance Sensor
  - Pedal Positioning Sensor
  - Steering Mounted Controls Assembly
- Steering Mounted Controls Assembly
- Towing / Trailer System
  - Towing Hook / Bracket
  - Trailer Connector
  - Trailer Hitch
  - Trailer Lighting Relay
- Trailer Connector
- Description and Operation
  - Navigation System
  - OnStar
    - Part 1
    - Part 2
  - Radio/Audio System
  - Steering Wheel Controls
- Testing and Inspection
  - Symptom Related Diagnostic Procedures
  - Scan Tool Testing and Procedures
- Diagrams
  - Diagram Information and Instructions
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
  - Cellular, Entertainment, and Navigation
  - Secondary and Configurable Customer Controls
- Technical Service Bulletins
- Tools and Equipment
Body and Frame
- Air Bag(s) Arming and Disarming
- Repairs and Inspections Required After a Collision
- Seat Belt Arming and Disarming
- Body Control Systems
  - Body Control Module
  - Description and Operation
  - Testing and Inspection
  - Diagrams
- Access Cover
- Bumper
  - Front Bumper
  - Rear Bumper
  - Technical Service Bulletins
- Cabin Ventilation Grille
- Cowl
  - Cowl Moulding / Trim
  - Locations
- Doors, Hood and Trunk
  - Doors
  - Hood
  - Trunk / Liftgate
    - Trunk / Liftgate Lock Cylinder
    - Service Precautions
- Exterior Moulding / Trim
  - Body Emblem
  - Cowl Moulding / Trim
  - License Plate Bracket
  - Windshield Moulding / Trim
  - Service Precautions
  - Description and Operation
  - Specifications
- Fender
  - Front Fender
  - Rear Fender
    - Rear Fender Liner
- Frame
  - Cross-Member
  - Skid Plate
  - Subframe
    - Front Subframe Mount
  - Trailer Hitch
  - Specifications
- Grille
- Interior Moulding / Trim
  - Arm Rest
  - Carpet
  - Dashboard / Instrument Panel
  - Glove Compartment
  - Headliner
  - Passenger Assist Handle
  - Scuff Plate
  - Sun Visor
  - Trim Panel
  - Service and Repair
  - Specifications
    - Instrument Panel and Console Trim
    - Interior Trim and Paneling
  - Technical Service Bulletins
- Locks
  - Door Locks
  - Key
  - Keyless Entry
  - Power Locks
  - Trunk / Liftgate Lock Cylinder
  - Description and Operation
  - Testing and Inspection
  - Service and Repair
  - Diagrams
  - Specifications
  - Technical Service Bulletins
- Mirrors
  - Power Mirror Switch
  - Description and Operation
  - Testing and Inspection
  - Locations
    - Outside Rearview Mirror - Driver (DE5 or DE7)
    - Outside Rearview Mirror - Passenger (DE5 or DE7)
  - Service and Repair
  - Diagrams
  - Specifications
- Paint, Striping and Decals
  - Paint
  - Application and ID
- Radiator Support
- Relays and Modules - Body and Frame
  - Power Door Lock Relay
- Seats
  - Power Seat Motor
  - Power Seat Switch
  - Seat Back
  - Seat Cushion
  - Description and Operation
  - Testing and Inspection
    - Symptoms - Power Seats
    - Power Seat Inoperative
  - Service and Repair
    - Procedures
    - Removal and Replacement
  - Diagrams
  - Specifications
    - Power Seats
    - Seat Hardware, Trim, and Upholstery
  - Technical Service Bulletins
- Sensors and Switches - Body and Frame
  - Door Position Switch
  - Pedal Positioning Sensor
  - Power Door Lock Switch
  - Power Mirror Switch
  - Power Seat Switch
- Towing Hook / Bracket
- Unibody
  - Cowl
    - Cowl Moulding / Trim
    - Locations
- Weatherstrip
  - Rear Door Weatherstrip
  - Sliding Door Weatherstrip
- Service Precautions
  - Approved Equipment for Collision Repair Warning
  - Failure to Prep Primer Warning
  - Collision Sectioning Warning
  - Foam Sound Deadeners Warning
  - Glass and Sheet Metal Handling Warning
  - Apply Tape When Removing Body Panel Caution
- Application and ID
- Testing and Inspection
  - Air/Wind Noise
  - Squeaks and Rattles
  - Vibration Diagnosis and Correction
  - Waterleaks
- Technical Service Bulletins
- Tools and Equipment
Cruise Control
Instrument Panel, Gauges and Warning Indicators
- Air Bag Deactivation Indicator
- Audible Warning Device Control Module
- Cigarette Lighter
- Compass
- Dashboard / Instrument Panel
  - Air Bag(s) Arming and Disarming
  - Seat Belt Arming and Disarming
  - Description and Operation
  - Service and Repair
  - Technical Service Bulletins
- Dimmer Switch
- Door/Trunk Ajar Indicator/Lamp
- Door Switch
- Driver / Vehicle Information Display Switch
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
  - Air Bag(s) Arming and Disarming
  - Seat Belt Arming and Disarming
  - Testing and Inspection
  - Locations
    - Instrument Cluster - Owners Manual
    - Instrument Cluster - Service Manual
      - Instrument Panel Components
      - Instrument Panel - Upper Pad
  - Service and Repair
  - Diagrams
- Malfunction Indicator Lamp
- Odometer
- Oil Change Reminder Lamp
- Outside Temperature Display
  - Outside Temperature Display Sensor
- Parking Brake Warning Switch
- Relays and Modules - Instrument Panel
  - Audible Warning Device Control Module
- Sensors and Switches - Instrument Panel
  - Dimmer Switch
  - Door Switch
  - Fuel Gauge Sender
  - Outside Temperature Display Sensor
  - Parking Brake Warning Switch
- Tire Monitoring System
  - Tire Pressure Monitor Receiver / Transponder
  - Tire Pressure Sensor
  - Description and Operation
  - Testing and Inspection
    - Symptoms - Tire Pressure Monitoring
    - Low Tire Pressure Indicator Malfunction
  - Service and Repair
    - Tire Pressure Monitor Operation - Owners Manual
    - Tire Pressure Monitor Operation - Service Manual
  - Technical Service Bulletins
  - Tools and Equipment
- Description and Operation
  - Audible Warnings
  - Compass Calibration and Magnetic Variance (Without Onstar Only)
  - Driver Information Center (DIC)
  - Indicator/Warning Message
  - Instrument Cluster
- Testing and Inspection
  - Symptom Related Diagnostic Procedures
  - Scan Tool Testing and Procedures
- Service and Repair
- Diagrams
  - Diagram Information and Instructions
  - Diagnostic Aids
  - Electrical Diagrams
    - Instrument Cluster Schematics
    - Audible Warnings Schematics
- Specifications
- Technical Service Bulletins
Lighting and Horns
- Ambient Light Sensor
- Backup Lamp
  - Backup Lamp Relay
  - Backup Light Bulb
  - Locations
    - Backup Lamp - Right
    - Backup Lamp - Left
  - Service and Repair
  - Diagrams
- Brake Lamp
  - Brake Lamp Relay
  - Locations
    - Tail/Stop and Turn Signal Lamp - Left
    - Tail/Stop and Turn Signal Lamp - Right
  - Diagrams
    - Tail/Stop and Turn Signal Lamp - Left (Passenger or Cargo)
    - Tail/Stop and Turn Signal Lamp - Right (Passenger or Cargo)
- Brake Light Switch
- Cargo Lamp
- Center Mounted Brake Lamp
- Courtesy Lamp
  - Courtesy Lamp Relay
  - Service and Repair
- Daytime Running Lamp
  - Daytime Running Lamp Relay
  - Service and Repair
- Dimmer Switch
- Dome Lamp
  - Dome Lamp Bulb
  - Locations
  - Service and Repair
  - Diagrams
- Door Switch
- Fog/Driving Lamp
  - Fog/Driving Lamp Bulb
  - Fog/Driving Lamp Switch
  - Service and Repair
    - Rear Fog Lamp Replacement
    - Front Position Lamp Replacement
- Hazard Warning Lamps
  - Hazard Warning Switch
- Headlamp
  - Headlamp Bulb
  - Headlamp Relay
  - Headlamp Switch
  - Locations
  - Service and Repair
    - Procedures
    - Removal and Replacement
  - Diagrams
- Horn
  - Horn Relay
  - Horn Switch
  - Description and Operation
  - Testing and Inspection
    - Symptoms - Horns
    - Horns Malfunction
  - Locations
  - Service and Repair
  - Diagrams
  - Specifications
- License Plate Lamp
- Marker Lamp
- Parking Lamp
  - Parking Lamp Relay
  - Service and Repair
  - Diagrams
    - Park/Turn Signal Lamp - Left Front
    - Park/Turn Signal Lamp - Right Front
- Relays and Modules - Lighting and Horns
  - Backup Lamp Relay
  - Brake Lamp Relay
  - Courtesy Lamp Relay
  - Daytime Running Lamp Relay
  - Headlamp Relay
  - Horn Relay
  - Parking Lamp Relay
  - Trailer Lighting Relay
- Sensors and Switches - Lighting and Horns
  - Ambient Light Sensor
  - Brake Light Switch
  - Combination Switch
  - Door Switch
  - Fog/Driving Lamp Switch
  - Hazard Warning Switch
  - Headlamp Switch
  - Horn Switch
  - Turn Signal Switch
- Tail Lamp
- Trailer Lighting Relay
- Turn Signals
  - Combination Switch
  - Turn Signal Lamp
  - Turn Signal Switch
- Underhood Lamp
- Service Precautions
- Description and Operation
  - Exterior Lighting Systems
  - Interior Lighting Systems
- Testing and Inspection
  - Symptoms - Lighting
  - Backup Lamps Malfunction
  - Courtesy Lamps Malfunction
  - Daytime Running Lamps Malfunction
  - Hazard Lamps Malfunction
  - Headlamps Malfunction
  - Interior Backlighting Malfunction
  - Park, License, and/or Tail Lamps Malfunction
  - Stop Lamps Malfunction
  - Turn Signal Lamps and/or Indicators Malfunction
- Diagrams
  - Diagram Information and Instructions
  - Diagnostic Aids
  - Electrical Diagrams
- Specifications
- Tools and Equipment
Windows and Glass
- Heated Glass Element
- Relays and Modules - Windows and Glass
  - Heated Glass Element Relay
  - Power Window Relay
- Sensors and Switches - Windows and Glass
  - Power Window Switch
- Windows
- Windshield
  - Windshield Moulding / Trim
  - Service and Repair
    - Procedures
    - Removal and Replacement
- Service Precautions
  - Cracked Window Warning
  - Window Retention Warning
Wiper and Washer Systems
- Relays and Modules - Wiper and Washer Systems
  - Wiper Relay
- Windshield Washer Hose
- Windshield Washer Pump
- Windshield Washer Reservoir
- Wiper Arm
- Wiper Blade
- Wiper Gear Box
- Wiper Motor
- Wiper Relay
- Description and Operation
- Testing and Inspection
  - Symptom Related Diagnostic Procedures
  - Component Tests and General Diagnostics
    - Wiper Arm Tip Pressure Check
    - Wiper Blade Element Check
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
Service Precautions
- Introduction
- Assistant Driving Warning
- Definition of Danger, Warning, Caution, and Note
- Eye Protection Warning
- Moving Parts and Hot Surfaces Warning
- Protective Goggles and Glove Warning
- Road Test Warning
- Safety Glasses and Compressed Air Warning
- Safety Glasses Warning
- Work Stall Test Warning
- Component Fastener Tightening Caution
- Fastener Caution
- Machined Surface Damage Caution
- Installing Hoses without Twists or Bends Caution
- Pipe Wrench Positioning Caution
- Sealant Caution
- Seal Reuse Caution
- Test Probe Caution
Application and ID
- Registered and Non-Registered Trademarks
- RPO Code List
- Vehicle Certification, Tire Placard, Anti-Theft and Service Parts ID Label
- Vehicle, Engine, Transmission ID and VIN Location, Derivative and Usage
Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Component Tests and General Diagnostics
  - General Electrical Diagnostic Procedures
  - Testing Ground and Low Reference Circuits
- Monitors, Trips, Drive Cycles and Readiness Codes
- Programming and Relearning
  - Control Module References
  - Service Programming System (SPS)
Locations
- Component Locations
- Connector Locations
  - Master Connector List
  - Connectors By Number
- Ground Locations
  - Master Grounds List
  - Grounds By Number
- Splice Locations
  - Master Splice List
  - Splices By Number
- Harness Locations
Service and Repair
- Procedures
  - Fasteners
  - Thread Inserts
- Removal and Replacement
  - Relay Replacement (Attached to Wire Harness)
  - Relay Replacement (Within an Electrical Center)
Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Exploded Views
  - Automatic Transmission/Transaxle
- Connector Views
- Electrical Diagrams
- Mechanical Diagrams
  - Drive Belt
- Fluid Diagrams
  - Automatic Transmission/Transaxle
    - 4L60-E/4L65-E/4L70-E - Automatic Transmission
    - 6L45/6L50/6L80/6L90 - Automatic Transmission
- Vacuum and Vapor Hose Diagrams
  - Heating and Air Conditioning
- Components
- Connectors
  - Master Connector List
  - Connectors By Number
- Grounds
  - Master Grounds List
  - Grounds By Number
- Splices
  - Master Splice List
  - Splices By Number
- Harness
Specifications
- Electrical Specifications
- Mechanical Specifications
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
Technical Service Bulletins
Tools and Equipment