Diagnostic Starting Point - Automatic Transmission: Notes
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Begin the system diagnosis with Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check provides the following information:
- The identification of the control module or modules which commands the system.
- The ability of the control module or modules to communicate through the serial data circuit.
- The identification and status of stored diagnostic trouble codes (DTCs).
The use of Diagnostic System Check - Vehicle in Vehicle DTC Information identifies the correct procedure for diagnosing the system and the procedure location.