GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2003 🢒 Ascender - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Symptoms - Instrument Panel, Gages and Console

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

  1. Perform Diagnostic System Check - Instrument Cluster and Diagnostic System Check - Audible Warnings before using the Symptom Tables in order to verify that all of the following are true:
    2. • There are no DTCs set.
    • The control module(s) 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
    •  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 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 applicable reservoir for the proper fluid level related to the indicator or message.
    • Verify that the indicators work 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 in Wiring Systems.

Symptom List

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

Gages

    •  Engine Coolant Temperature Gage Inaccurate or Inoperative
    •  Engine Oil Pressure Gage Inaccurate or Inoperative
    •  Fuel Gage Inaccurate or Inoperative
    •  Speedometer and/or Odometer Inaccurate or Inoperative
    •  Tachometer Inaccurate or Inoperative
    •  Volt Gage Inaccurate or Inoperative

Indicators

    •  ABS Indicator Always On in Antilock Brake System.
    •  ABS Indicator Inoperative in Antilock Brake System.
    •  Air Bag Indicator Circuit Malfunction
    •  Brake Warning Indicator Always On in Hydraulic Brakes.
    •  Brake Warning Indicator Inoperative in Hydraulic Brakes.
    •  Change Engine Oil Indicator Always On
    •  Charge Indicator Always On in Engine Electrical.
    •  Charge Indicator Inoperative in Engine Electrical.
    •  Cruise Control Indicator Always On in Cruise Control.
    •  Cruise Control Indicator Inoperative in Cruise Control.
    •  High Beam Indicator Always On in Lighting Systems.
    •  High Beam Indicator Inoperative in Lighting Systems.
    •  Malfunction Indicator Lamp (MIL) Always On in Engine Controls.
    •  Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls.
    •  Low Fuel Indicator Inoperative
    •  Rear Hatch/Gate Ajar Indicator Always On in Body Rear End
    •  Rear Hatch/Gate Ajar Indicator Inoperative in Body Rear End
    •  Security Indicator Inoperative in Theft Systems.
    •  Service Indicator Always On in Two Speed Automatic Transfer Case.
    •  Service Indicator Inoperative in Two Speed Automatic Transfer Case.
    •  Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems.
    •  Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems.

Driver Information Center

Driver Information Center (DIC) Switch Inoperative

Instrument Cluster Dimming

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

Odometer

Odometer Trip/Reset Switch Inoperative

Audible Warning

    •  Chime Always On
    •  Chime Inoperative