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Home >> GMC >> 2019 >> Sierra 2500 HD Base, 2D Pickup, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 3029 (Programming And Setup - All Systems) >> Repair Instructions >> Control Solenoid Valve And Transmission Control Module Assembly Programming And Setup (6L80/6L90) >> Transmission Control Module (TCM) Replacement
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Transmission Control Module (TCM) Replacement

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Sierra 3500 HD, 2018 GMC Sierra 2500 HD, 2018 GMC Sierra 1500, 2018 Chevrolet Silverado 3500 HD, and 2018 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

If the TCM is replaced, the following procedures must be performed:

  1. TCM Reprogramming
  2. Perform the Reset Transmission Adapts - Refer to Reset Transmission Adapts
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