DTC Descriptors

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure supports the following DTCs:

DTC P0601 Transmission Control Module (TCM) Read Only Memory (ROM)
DTC P0602 Transmission Control Module (TCM) Not Programmed
DTC P0603 Transmission Control Module (TCM) Long Term Memory Reset
DTC P0604 Transmission Control Module (TCM) Random Access Memory (RAM)