Diagnostic Starting Point-Automatic Transmission: Notes
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 SELF-DIAGNOSTIC SYSTEM for 4.3 L or SELF-DIAGNOSTIC SYSTEM for 4.8 L, 5.3 L and 6.0 L. The Diagnostic System Check provides the following information:
- The identification of the control module(s) which commands the system.
- The ability of the control module(s) to communicate through the serial data circuit.
- The identification and status of stored diagnostic trouble codes (DTCs).
The use of the SELF-DIAGNOSTIC SYSTEM for 4.3 L or SELF-DIAGNOSTIC SYSTEM for 4.8 L, 5.3 L and 6.0 L identifies the correct procedure for diagnosing the system and the procedure location.