Replace and Program ECU or Reprogram ECU
WARNING: This page is about a different car, the 2023 GMC Savana 3500, 2023 GMC Savana 2500, 2023 Chevrolet Express 3500, and 2023 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
To program a replacement or an existing ECU, perform the following procedure:
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select P16 Instrument Cluster - Programming and follow the on-screen instructions.
- At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
NOTE:
Programming this ECU using SPS does not program the odometer value. The odometer information will be pre-programmed to the replacement instrument cluster.