Symptoms - Transfer Case: Notes

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Perform the Diagnostic System Check - Vehicle (without HP2) or Diagnostic System Check - Vehicle (with HP2) before using the symptom tables in order to verify the following statements are true:
- There are no diagnostic trouble codes (DTCs) set.
- The control modules can communicate via the serial data link.
Review the system operation in order to familiarize yourself with the system functions. Refer to Transfer Case Description and Operation .