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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Programming And Setup - All Systems) >> Repair Instructions >> K71 Transmission Control Module: Programming and Setup (8L45/90) >> Reprogram Control Module
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Reprogram Control Module

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

To program an existing K71 Transmission Control Module, perform the following procedure.

  1. Install EL-49642  SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. Perform the K20 Engine Control Module and K71 Transmission Control Module Sequential Programming and follow the on-screen instructions.
  4. Perform the Refresh Characterization Data at the MCVM Characterization procedure, follow the on-screen instructions.
  5. Perform the Transmission Service Fast Learn Procedure .
  6. With a scan tool, clear DTCs from the K71 Transmission Control Module.
  7. Ignition OFF for 2 minutes.
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