GM Service Manual Online
For 1990-2009 cars only

Important: The following steps must be completed before using the symptom tables.

  1. Perform Diagnostic System Check - Vehicle , before using the Symptom Tables in order to verify that all of the following are true:
  2. • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  3. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
  4. •  Audible Warnings Description and Operation
    •  Compass Calibration and Magnetic Variance
    •  Driver Information Center (DIC) Description and Operation
    •  Indicator/Warning Message Description and Operation
    •  Instrument Cluster Description and Operation

Visual/Physical Inspection

    â€¢ Inspect for aftermarket devices which could affect the operation of the instrument panel cluster or audible warnings system. Refer to Checking Aftermarket Accessories .
    â€¢ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    â€¢ Inspect for the proper fluid levels.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Gages and Odometer

    â€¢  Engine Coolant Temperature Gage Inaccurate or Inoperative
    â€¢  Fuel Gage Inaccurate or Inoperative
    â€¢  Hourmeter Inaccurate or Inoperative
    â€¢  Speedometer and/or Odometer Inaccurate or Inoperative
    â€¢  Tachometer Inaccurate or Inoperative

Indicators

    â€¢  ABS Indicator Malfunction
    â€¢  Air Bag Indicator Circuit Malfunction
    â€¢  Brake Warning Indicator Malfunction
    â€¢  Charge Indicator Malfunction
    â€¢  Compass Malfunction
    â€¢  Daytime Running Lamps Malfunction
    â€¢  Door Ajar Indicator Malfunction
    â€¢  Driver Information Center (DIC) Switch Malfunction
    â€¢  Engine Oil Pressure Indicator Malfunction
    â€¢  Front Fog Lamps Malfunction
    â€¢  Headlamps Malfunction
    â€¢  Head Up Display (HUD) Malfunction
    â€¢  Interior Backlighting Malfunction
    â€¢  Liftgate Ajar Indicator Malfunction
    â€¢  Low Tire Pressure Indicator Malfunction
    â€¢  Malfunction Indicator Lamp (MIL) Diagnosis
    â€¢  Park, License, and/or Tail Lamps Malfunction
    â€¢  Passenger Presence System Indicator Circuit Malfunction
    â€¢  Seat Belt Indicator Circuit Malfunction - Driver
    â€¢  Seat Belt Indicator Circuit Malfunction - Passenger
    â€¢  StabiliTrak Indicator Malfunction
    â€¢  Turn Signal Lamps and/or Indicators Malfunction

Audible Warnings

Chime Malfunction