GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Express 🢒 Body and Accessories 🢒 Data Link Communications 🢒 Symptoms - Instrument Panel, Gages and Console

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

  1. Perform the Diagnostic System Check - Instrument Cluster 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.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
    3. •  Instrument Cluster Description and Operation
    •  Indicator/Warning Message Description and Operation
    •  Audible Warnings Description and Operation

Visual/Physical Inspection
    • Inspect for aftermarket devices which could affect the operation of the Instrument Cluster or Audible Warning Systems. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect the reservoirs for the proper fluid level before beginning diagnosis.
    • Inspect the applicable reservoir for the proper fluid level related to the indicator or message.
    • Verify that the indicators work properly during the bulb check.

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:

Gages and PRNDL Display

    •  Engine Coolant Temperature Gage Inaccurate or Inoperative
    •  Engine Oil Pressure Gage Inaccurate or Inoperative
    •  Fuel Gage Inaccurate or Inoperative
    •  Gages Inoperative - All
    •  Range Selector Displays Incorrect Range in Transmission 4L60E
    •  Range Selector Displays Incorrect Range in Transmission 4L80E
    •  Speedometer and/or Odometer Inaccurate or Inoperative
    •  Volt Gage Inaccurate or Inoperative

Indicators

    •  ABS Indicator Always On in Antilock Brakes System
    •  ABS Indicator Inoperative in Antilock Brake System
    •  Air Bag Indicator Always On in SIR
    •  Air Bag Indicator Does Not Come ON in SIR
    •  Brake Warning Indicator Always On in Hydraulic Brakes
    •  Brake Warning Indicator Inoperative in Hydraulic Brakes
    •  Charge Indicator Always On in Engine Electrical
    •  Charge Indicator Inoperative in Engine Electrical
    •  Fasten Safety Belt Indicator/Chime Always On in Seat Belts
    •  Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts
         High Beam Indicator Inoperative in Lighting Systems
    •  Low Engine Coolant Indicator Always On in Engine Cooling
    •  Malfunction Indicator Lamp (MIL) Always On in Engine Controls - 4.3L
    •  Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls - 4.3L
    •  Malfunction Indicator Lamp (MIL) Always On in Engine Controls - 5.0L and 5.7L
    •  Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls - 5.0L and 5.7L
    •  Security Indicator Always On or Flashing in Theft Deterrent
    •  Security Indicator Inoperative in Theft Deterrent
    •  Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems
    •  Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems
    •  Water-in-Fuel Lamp Always On in Engine Controls 6.5L
    •  Water-in-Fuel Lamp Inoperative in Engine Controls 6.5L

Instrument Cluster Dimming

    •  Interior Backlighting Does Not Dim in Lighting Systems
    •  Interior Backlighting Inoperative in Lighting Systems

Audible Warning

    •  Chime Always On
    •  Chime Inoperative