Installation Procedure
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.
Trailer Brake Power Control Module (4) - Install
- Trailer Brake Power Control Module Nut (3) - Install and Tighten [2x]9 N.m (80 lb in)
- Wiring Harness Retainer (2) - Install
- Connect the electrical connector. (1)
Slide the fuel filter bracket (1) to the right and install the fuel filter bracket.
Fuel Filter Bracket Nut (1) - Tighten 25 N.m (18 lb ft)
Auxiliary Fuel Tank Strap Bolt (2) - Install - Auxiliary Fuel Tank Replacement (Chassis Cab)
- Fuel Filter Bracket Nut (1) - Tighten 25 N.m (18 lb ft)
- Fuel Filter Assembly - Install - Fuel Filter Assembly Replacement (Chassis Cab)Fuel Filter Assembly Replacement (Crew Cab)
- Remove the support and lower the vehicle.
CAUTION: