I bought an 03 avalanche with the factory towing package a month ago, and have now tried to tow 2 different trailers with it.
With both trailers, the brake lights and turn signals work, but the taillights and running lights do not. Both trailers' lights worked fine with the previous truck.
Is there a separate fuse for the brown taillights wire, or do I have to change the position of the headlight switch to get the trailer's taillights to work?