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 - Instrument Cluster
  2. • There are no DTCs set.
    • The control module(s) can communicate via the serial data link.
  3. Review the system operation in order to familiarize yourself with the system functions. Refer to:
  4. •  Instrument Cluster Description
    •  Gauge Description
    •  Indicator Description
    •  Driver Information Center (DIC) or Message Center Warning Messages Description
    •  Audible Warnings Description

Visual/Physical Inspection

    • Inspect for aftermarket devices which may affect the operation of the instrument panel cluster. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

Intermittent

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

Symptom List

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

    •  Engine Coolant Temperature Gage Inaccurate or Inoperative
    •  Engine Oil Pressure Gage Inaccurate or Inoperative
    •  Engine Oil Temperature Gage Inoperative
    •  Fuel Gage Inaccurate or Inoperative
    •  Speedometer and/or Odometer Inoperative
    •  Tachometer Inoperative
    •  Tire Pressure Gage Inoperative
    •  Transmission Fluid Temperature Gage Inaccurate or Inoperative
    •  Volt Gage Inaccurate or Inoperative
    •  CHECK GAGES Indicator Inoperative
    •  MPH (Km/h) Indicator Inoperative
    •  Instrument Cluster Illumination Lamps Inoperative