GM Service Manual Online
For 1990-2009 cars only

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

  1. Perform the Diagnostic System Check - Vehicle , before using the symptom table in order to verify that all of the following are true:
  2. • There are no DTCs set.
    • The 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. •  Instrument Cluster Description and Operation
    •  Indicator/Warning Message Description and Operation
    •  Driver Information Center (DIC) Description and Operation
    •  Audible Warnings Description and Operation

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the audible warnings, driver information center (DIC), or instrument panel cluster (IPC). Refer to Checking Aftermarket Accessories.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • For any indicator or message relating to fluid level, perform a visual inspection of the fluid level before beginning diagnosis.
    • Verify that the indicators and the message display works properly during the displays test.

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

    •  Fuel Gage Inaccurate or Inoperative
    •  Instrument Cluster Gages Inoperative

Indicators

    •  ABS Indicator Malfunction
    •  Air Bag Indicator Circuit Malfunction
    •  Brake Warning Indicator Malfunction
    •  Charge Indicator Malfunction
    •  Chime Malfunction
    •  Content Theft Deterrent (CTD) Description and Operation
    •  Door Ajar Indicator Malfunction
    •  Driver Information Center (DIC) Switch Malfunction
    •  Engine Oil Pressure Indicator Malfunction
    •  Liftgate Ajar Indicator Malfunction
    •  Malfunction Indicator Lamp (MIL) Diagnosis
    •  Passenger Presence System Indicator Circuit Malfunction
    •  Seat Belt Indicator Circuit Malfunction - Driver
    •  Seat Belt Indicator Circuit Malfunction - Passenger
    •  Traction Control Indicator Malfunction
    •  Turn Signal Lamps and/or Indicators Malfunction

Audible Warnings

Chime Malfunction