GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Transmission Control Module Replacement

Object Number: 1617083 Size: MF

Callout

Component Name

Caution: Refer to Fastener Caution in the Preface section.

Preliminary Procedures

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the air cleaner housing. Refer to Air Cleaner Assembly Replacement.
  3. Position the powertrain control module (PCM) out of the way. Refer to Powertrain Control Module Replacement.

1

Transmission Control Module (TCM)

Tip

    • Disconnect the TCM electrical connector.
    • New TCM must be programmed. Refer to Control Module References for programming and setup information..
    • 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), 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.