LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2013 >> Sierra 1500 XFE >> Repair and Diagnosis >> External Pages >> Different car >> Section 2500 (Programming And Setup - All Systems) >> Repair Instructions >> K71 Transmission Control Module: Programming and Setup (8L45/90) >> Reprogram Control Module
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Reprogram Control Module

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 GMC Sierra 3500 HD, 2015 GMC Sierra 2500 HD, 2015 GMC Sierra 1500, 2015 Chevrolet Silverado 3500 HD, and 2015 Chevrolet Silverado 2500 HD. 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.
scientia non olet · About LEMON Manuals