Troubleshooting Brake Controller on 2002 GMC Sierra 2500 HD
Activating 12 Volt Trailer Accessory Circuit of 2002 GMC Sierra Through 7-Way
Brake Controller Installation Details and Running Wires on a 2002 GMC 2500 Pickup
Which Weight Distribution System for a 2002 GMC Sierra and 21 Foot 6,000 Gross Trailer Weight