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Home >> Cadillac >> 2021 >> XT5 Luxury, FWD >> Repair and Diagnosis >> General Information >> Reset Procedures >> Programming And Setup >> Repair Instructions >> K84 Keyless Entry Control Module: Programming and Setup >> Replace and Program ECU or Reprogram ECU

Replace and Program ECU or Reprogram ECU

To program a replacement or an existing ECU, 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. On the SPS Supported Controllers screen, select K84 Keyless Entry Control Module - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
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