Symptoms - Navigation Systems: Notes

WARNING: This page is about a different car, the 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

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

Perform the DIAGNOSTIC SYSTEM CHECK - NAVIGATION SYSTEM 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.
Review NAVIGATION SYSTEM DESCRIPTION AND OPERATION in order to familiarize yourself with the system functions.