Test Description
WARNING: This page is about a different car, the 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 2.
Tests the functionality of the Mode/Range buttons.
- 3.
Tests the modules ability to operate the transfer case modes.
Courtesy of GENERAL MOTORS CORP.