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: K69 Transfer Case Control Module - 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: K69 Transfer Case Control Module - Programming
- If the programming is not successful - Replace the component: K69 Transfer Case Control Module
- Replace the component: K69 Transfer Case Control Module
- Perform the SPS function: K69 Transfer Case Control Module - Setup
- Go to next step: If the programming is successful
- Perform the SPS function: K69 Transfer Case Control Module - Setup
- If the procedure was not successful
- Replace the component: A16 Transfer Case Motor
- Perform the SPS function: K69 Transfer Case Control Module - Setup
- Go to next step: If the procedure was successful
- All OK.
- Go to next step: If the programming is successful
- Perform the SPS function: K69 Transfer Case Control Module - Setup
- Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to No.
- All OK.