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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 reprogram an existing K20 Engine 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. Clear DTCs after completing the Programming procedure.
    4. NOTE:

    If vehicle fails to start during Configuration and Setup, perform the SPS Function Immobilizer Learn and follow the on-screen instructions.

  4. Perform the SPS function Engine Control Module - Configuration & Setup and follow the on-screen instructions, if available.
  5. Clear DTCs after completing the Configuration & Setup procedure.
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