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

1. Perform Diagnostic System Check - Instrument Cluster or Diagnostic System Check - Driver Information Systems before using the symptom table in order to verify that all of the following are true:

•	There are no DTCs set.

•	The 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:

•	Instrument Cluster Description and Operation

•	Indicator/Warning Message Description and Operation

•	Driver Information Center (DIC) Description and Operation

•	Audible Warnings Description and Operation

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

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

Audible Warnings

Driver Information Center (DIC)

Gages

Indicators