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Home >> Cadillac >> 2017 >> CTS Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Programming And Setup - All Systems) >> Repair Instructions >> K71 Transmission Control Module: Programming and Setup (TL-80SN (MGG)) >> Programming an Existing Control Module
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Programming an Existing Control Module

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

To program an existing control module, perform the following procedure:

  1. Install the special tool: EL-49642  SPS Programming Support Tool
  2. Ignition On/Vehicle in Service Mode.
  3. Access SPS and follow the on-screen instructions for the control module: K71 Transmission Control Module
  4. Perform the SPS function: Reprogram ECU
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