Diagnostic Starting Point - Locking/Limited Slip Rear Axle

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Begin the system diagnosis with Diagnostic System Check - Locking/Limited Slip Rear Axle . The Diagnostic System Check will provide the following information:

The Identification of the control module or modules which command the system.
The ability of the control module or modules to communicate through the serial data circuit.
The identification of any stored diagnostic trouble codes (DTCs) and the status of the codes.

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