2009 GMC Trailer Wiring | etrailer Guaranteed fit 2009 GMC Trailer Wiring. Lowest price guaranteed. Thousands of customer trailer wiring reviews, expert tips and recommendation. Lowest price guaranteed, easy online ordering at etrailer or call 800-298-8924. Fuse Location For Trailer Wiring On 2009 Chevrolet Fuse Location For Trailer Wiring On 2009 Chevrolet Silverado Duramax Question: I have a 2009 chev duramax I plugged up to a trailer that was not wired right and blew a fuse for my trailer brakes. its one of the 60 amp fuses im sure but I cant find it.