Transmission Control Module Replacement

WARNING: This page is about a different car, the 2007 Saturn Sky. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transmission Control Module

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Remove the left front fender. Refer# to Front Fender Replacement . Reposition the windshield washer solvent container. Refer# to Washer Solvent Container Replacement .
1	Electronic Control Module (ECM) Tip: Remove the ECM from the ECM bracket but do not disconnect the ECM electrical connectors.
2	ECM Bracket Bolt (Qty: 3) NOTE: Refer# to Fastener Notice . Tighten: 10 N.m (89 lb in)
3	ECM Bracket
4	Transmission Control Module (TCM) Bolt (Qty: 3) Tighten: 10 N.m (89 lb in)
5	TCM IMPORTANT: Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins. Tip: Disconnect the TCM electrical connector. A new TCM requires programming. Refer# to Control Module References . It is recommended that transmission adaptive pressure (TAP) information be reset. Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned. Reset the TAP values. Refer# to Transmission Adaptive Functions .