- Symptoms - Displays and Gages

Symptoms - Displays and Gages

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


1. Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) , 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 GMLAN.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following procedures:

* Instrument Cluster Description and Operation (Description and Operation).
* Indicator/Warning Message Description and Operation (Indicator/Warning Message Description and Operation).

Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the instrument panel cluster (IPC). Refer to Checking Aftermarket Accessories (Component Tests and General Diagnostics).
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
* Inspect for the correct fluid levels.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).

Symptom List

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

Gauges and Odometer
* Fuel Gage Inaccurate or Inoperative (Fuel Gage Inaccurate or Inoperative)
* Instrument Cluster Gages Inoperative (Instrument Cluster Gages Inoperative)

Indicators
* Air Bag Indicator Circuit Malfunction (Air Bag Indicator Circuit Malfunction)
* Brake Warning Indicator Malfunction (Brake Warning Indicator Malfunction)
* Charge Indicator Malfunction (Charge Indicator Malfunction)
* Chime Malfunction (Chime Malfunction)
* Compass Malfunction (Compass Malfunction)
* Door Ajar Indicator Malfunction (Door Ajar Indicator Malfunction)
* Daytime Running Lamps Malfunction (Daytime Running Lamps Malfunction)
* Engine Oil Pressure Indicator Malfunction (Engine Oil Pressure Indicator Malfunction)
* Front Fog Lamps Malfunction (Front Fog Lamps Malfunction)
* Fuel Gage Inaccurate or Inoperative (Fuel Gage Inaccurate or Inoperative)
* Headlamps Malfunction (Headlamps Malfunction)
* Low Tire Pressure Indicator Malfunction (Low Tire Pressure Indicator Malfunction)
* Malfunction Indicator Lamp (MIL) Diagnosis () for the 4.8L, 5.3L, 6.0L, 6.2L or 7.0L engine
* Park, License, and/or Tail Lamps Malfunction (Park, License, and/or Tail Lamps Malfunction)
* Passenger Presence System Indicator Circuit Malfunction (Passenger Presence System Indicator Circuit Malfunction)
* StabiliTrak Indicator Malfunction (StabiliTrak Indicator Malfunction)
* Turn Signal Lamps and/or Indicators Malfunction (Turn Signal Lamps and/or Indicators Malfunction)