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 the SPS function: Programming
Verify the control module programming is successful.
- If the programming is not successful
- Ignition/Vehicle - Off - For greater than 1 min
- Ignition - On/Vehicle - In Service Mode
- Perform the SPS function: Programming
- If the programming is not successful - Replace the component: K33 HVAC Control Module
- Go to next step: If the programming is successful
- All OK.
- Go to next step: If the programming is successful
- All OK.