Installation Procedure
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Trailer Lamp Control Module (2) - Install
- Trailer Lamp Control Module Bracket Nut (1) - Install and tighten [2x] - Fastener Specifications
- Connect the electrical connector.
- Install the spare tire.
- Remove the support and lower the vehicle.
- Reprogram the trailer lamp control module. Control Module References
CAUTION:
Refer to Fastener Caution .