Symptoms - Navigation Systems: Notes

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 GMC Yukon XL, 2009 GMC Yukon, 2009 Chevrolet Tahoe, 2009 Chevrolet Suburban, and 2009 Chevrolet Avalanche. 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 - Vehicle (with HP2) or Diagnostic System Check - Vehicle (without HP2) 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.