Unsuccessful Programming Recovery

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.

If programming a control module is not successful, perform the following procedure:

Verify the control module, data link connector and programming tool connections are secure and the tool software is up to date.
Ignition - On/Vehicle - In Service Mode
Perform one of the following SPS Programming functions:
NOTE:
If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.
- K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
- K20 Engine Control Module and follow on-screen instructions.
Verify the control module programming is successful.
- If the programming is not successful
1. Ignition/Vehicle - Off - For greater than 1 min
2. Ignition - On/Vehicle - In Service Mode
3. Perform one of the following SPS Programming functions:
  NOTE:
  If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.
  - K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
  - K20 Engine Control Module and follow on-screen instructions.
  - If the programming is not successful - Replace the appropriate component: K20 Engine Control Module or K71 Transmission Control Module
  - Go to next step: If the programming is successful
4. All OK.
- Go to next step: If the programming is successful
All OK.