Programming a New Control Module - Old Module Does Not Communicate
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Replace the component: K69 Transfer Case Control Module
- Ignition - On / Vehicle - In Service Mode
- Access SPS and follow the on-screen instructions for the control module: K69 Transfer Case Control Module
- Perform the SPS function: K69 Transfer Case Control Module - Programming
- Perform the SPS function: K69 Transfer Case Control Module - Setup
Enter the Transfer Case Clutch Identifier
Refer to: Transfer Case Identification
- Clear DTCs.
- Perform the scan tool function: Range Actuator Learn
Refer to: Transfer Case Range Actuator Learn