A Symptom Diagnosis

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

1. Perform the Diagnostic Starting Point - Instrument Panel, Gages and Console before using the symptom table in order to verify that all of the following are true:
^ There are no DTCs set.
^ The modules can communicate via the serial data link. Diagnostic Starting Point
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
^ Instrument Panel Cluster (IPC) 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 warnings. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ For any indicator or message relating to fluid level, perform a visual inspection of the fluid level before beginning diagnosis.
^ Verify that the indicators, and message display works properly during the bulb check.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams.

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

Audible Warnings
For symptom diagnosis refer to one of the following:
^ Chime Always On
^ Chime Inoperative

Gages
For symptom diagnosis refer to one of the following:
^ 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
For symptom diagnosis refer to one of the following:
^ ABS Indicator Always On in Antilock Brake System Symptom Related Diagnostic Procedures
^ ABS Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Air Bag Indicator Circuit Malfunction in Restraint Systems Symptom Related Diagnostic Procedures
^ For ASR OFF indicator refer to Traction Off Indicator Always On in Anti lock Brake System Symptom Related Diagnostic Procedures
^ For ASR OFF indicator refer to Traction Off Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Brake Warning Indicator Always On in Hydraulic Brakes Brake Warning Indicator Always On
^ Brake Warning Indicator Inoperative in Hydraulic Brakes Symptom Related Diagnostic Procedures
^ Change Engine Oil Indicator Always On
^ Change Engine Oil Indicator Inoperative
^ Check Gages Indicator Inoperative
^ Fasten Safety Belt Indicator/Chime Always On in Seat Belts Fasten Safety Belt Indicator/Chime Always On
^ Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts Fasten Safety Belt Indicator/Chime Inoperative
^ For the fuel level indicator refer to Fuel Gage Inaccurate or Inoperative
^ High Beam Indicator Inoperative in Lighting Systems Testing and Inspection
^ Low Engine Oil Level Indicator Always On
^ Low Traction Indicator Always On in Antilock Brake System Symptom Related Diagnostic Procedures
^ Low Traction Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Malfunction Indicator Lamp (MIL) Always On in Computers and Controls Systems-3.8L Malfunction Indicator Lamp (MIL) Always On
^ Malfunction Indicator Lamp (MIL) Inoperative in Computers and Controls Systems-3.8L Malfunction Indicator Lamp (MIL) Inoperative
^ Malfunction Indicator Lamp (MIL) Always On in Computers and Controls Systems-5.7L Malfunction Indicator Lamp (MIL) Always On
^ Malfunction Indicator Lamp (MIL) Inoperative in Computers and Controls Systems-5.7L Malfunction Indicator Lamp (MIL) Inoperative
^ Security Indicator Always On or Flashing in Theft Deterrent Testing and Inspection
^ Security Indicator Inoperative in Theft Deterrent Testing and Inspection
^ For Skip Shift indicator refer to Diagnostic System Check - Skip Shift System in Manual Transmission-MM6 Initial Inspection and Diagnostic Overview
^ For TCS OFF indicator refer to Traction Off Indicator Always On in Antilock Brake System Symptom Related Diagnostic Procedures
^ For TCS OFF indicator refer to Traction Off Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Trunk Ajar Indicator Always On in Trunk/Liftgate Testing and Inspection
^ Trunk Ajar Indicator Inoperative in Trunk/Liftgate Testing and Inspection
^ Turn Signal Lamps and/or Indicators Always On or Flashing (Pontiac) or Turn Signal Lamps and/or Indicators Always On or Flashing (Europe Scandinavia) or Turn Signal Lamps and/or indicators Always On or Flashing (Japan) or Turn Signal Lamps and/or Indicators Always On or Flashing (Chevrolet Domestic) in Lighting Systems Testing and Inspection
^ Turn Signal Lamps and/or Indicators Inoperative (Chevrolet Domestic) or Turn Signal Lamps and/or Indicators inoperative (Japan) or Turn Signal Lamps and/or Indicators Inoperative (Europe, Scandinavia) or Turn Signal Lamps and/or Indicators Inoperative (Pontiac) in Lighting Systems Testing and Inspection