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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Transmission Control Module Replacement

Transmission Control Module Replacement

Fig 1: Transmission Control Module
GM4588503Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
1 Transmission Control Module

Procedure

  1. Disconnect the electrical connector.
  2. Remove the module from the module bracket by releasing the retaining tabs.
  3. Program the transmission control module, if replaced. Refer to Solenoid Valve Characterization Reprogramming
    NOTE:

    Radiator assembly removed for clarity.
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