GM Service Manual Online
For 1990-2009 cars only

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the. Refer to Checking Aftermarket Accessories .
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect all related ground points for being clean and tight.

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:

    •  Chime Always On
    •  Chime Inoperative
    •  Door Ajar Indicator Malfunction
    •  Engine Coolant Temperature Gage Inaccurate or Inoperative
    •  Engine Oil Pressure Indicator Always On
    •  Fuel Gage Inaccurate or Inoperative
    •  Gages Inoperative - All
    •  Instrument Cluster Inoperative
    •  Outside Air Temperature Display Inaccurate or Inoperative
    •  Speedometer and/or Odometer Inaccurate or Inoperative
    •  Tachometer Inaccurate or Inoperative