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Home >> Chevrolet >> 2005 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 707 (Automatic Transaxle - 4T80-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Transmission Control Module Replacement

Transmission Control Module Replacement

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Compartment - Left Rear (LD8/L37)
GM1685480Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Transmission Control Module (TCM)
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 engine control module (ECM), powertrain control module (PCM) or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned. Reset the TAP values.
  • Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins.
2 TCM Bracket Nuts (Qty: 2)
NOTE: Refer to Fastener Notice .

Tighten:  10 N.m (89 lb in)

3 TCM Bracket
Refer to Control Module References for programming and setup information.