Diagnostic Starting Point - Air Suspension

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Begin the system diagnosis with the DIAGNOSTIC SYSTEM CHECK - AIR SUSPENSION . The Diagnostic System Check will provide the following information:

The identification of the control module(s) which command the system.
The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.