Diagnostic Starting Point-Manual Transmission

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

Begin the system diagnosis with Diagnostic System Check-Manual Transmission . The Diagnostic System Check-Manual Transmission will provide the following information:

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

Use the Diagnostic System Check-Manual Transmission in order to identify the correct procedure for diagnosing the system and where the procedure is located.