Transmission Control Module Replacement

2010 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Transmission Control Module Replacement
WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Transmission Control Module
GM1715566Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Transmission Control Module (TCM) Electrical Connector.
Tip:Β  Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins.
2 TCM Push Pins (Qty: 2)
3 TCM
Tip:Β 
  • 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 .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.