Replace and Program Control Module or Reprogram Control Module
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 GMC Yukon XL, 2020 GMC Yukon, 2020 Chevrolet Tahoe, 2020 Chevrolet Suburban, and 2020 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
To program a replacement or an existing control module, perform the following procedure:
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- In the SPS Supported Controllers screen, select K73 Telematics Communication Interface Control Module Programming and Service Activation and follow the on-screen instructions.
- At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
- Ensure the ignition is ON and the vehicle has not moved for at least one minute.
- Press and hold the TEST button on the telematics communication interface keypad assembly for at least 4 sec.
- You will hear "Emergency call system test in progress", then follow the audible instructions.
- Upon completion perform 3 ignition cycles.