A Symptom Diagnosis

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 or the Diagnostic System Check - Audible Warnings before using the Symptom Tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link. Diagnostic System Check - Instrument Panel Cluster
2. Review the system operation in order to familiarize yourself with the system functions.

Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the Instrument Cluster, Driver Information Center or Audible Warning 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.
- Verify that the indicators work properly during the displays test.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.

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

Gages and Odometer
- Engine Coolant Temperature Gage Inaccurate or Inoperative
- Engine Oil Pressure Gage Inaccurate or Inoperative
- Fuel Gage Inaccurate or Inoperative
- Odometer Trip/Reset Switch Inoperative
- Speedometer and/or Odometer 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 in Restraint Systems
- Brake Warning Indicator Always On in Hydraulic Brakes
- Brake Warning Indicator Inoperative in Hydraulic Brakes
- Charge Indicator Always On in Starting and Charging
- Charge Indicator Inoperative in Starting and Charging
- Fasten Safety Belt Indicator/Chime Always On in Seat Belts
- Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts
- High Beam Indicator Always On in Lighting Systems
- High Beam Indicator Inoperative in Lighting Systems
- Low Fuel Indicator Inoperative
- Malfunction Indicator Lamp (MIL) Always On in Computers and Control Systems - 4.3L
- Malfunction Indicator Lamp (MIL) Inoperative in Computers and Control Systems - 4.3L
- Security Indicator Always On or Flashing in Theft Deterrent
- Security Indicator Inoperative in Theft Deterrent
- Service Indicator Always On in Transfer Case
- Service Indicator Inoperative in Transfer Case
- Tow/Haul Switch/Indicator Always On or Inoperative in Automatic Transmission 4L60E
- 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) Compass Inaccurate or C Displayed
- Driver Information Center (DIC) Inoperative
- Driver Information Center (DIC) Switch(es) Inoperative
- Driver Information Center (DIC) Temperature Display Always Reads OC
- Driver Information Center (DIC) Temperature Display Always Reads SC
- Driver Information Center (DIC) Temperature Display Inaccurate or Inoperative

Instrument Cluster Dimming
- Interior Backlighting Does Not Dim in Lighting Systems
- Interior Backlighting Inoperative in Lighting Systems

Audible Warning
- Chime Always On
- Chime Inoperative