Make installing your trailer wiring harness as easy as possible with a custom fit wiring harness. Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers.
Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.
Wiring Adapter Fitguide
Trailer Wiring Manufacturers
Search For Custom Fit GMC Sierra Classic AccessoriesSelect A Category Below
Towing
GMC Sierra Classic Trailer Hitch
GMC Sierra Classic Trailer Wiring
GMC Sierra Classic Brake Controller
GMC Sierra Classic Fifth Wheel Hitch
GMC Sierra Classic Gooseneck Hitch
GMC Sierra Classic Front Mount Hitch
GMC Sierra Classic Towing Mirrors
GMC Sierra Classic Base Plate for Tow Bar
GMC Sierra Classic Vehicle Tow Bar Brake System
GMC Sierra Classic Vehicle Tow Bar Wiring
GMC Sierra Classic BOLT brand vehicle and hitch locks
GMC Sierra Classic Blind Spot Detection
Cargo Control
GMC Sierra Classic Roof Rack
GMC Sierra Classic Tool Box
GMC Sierra Classic Ladder Rack
GMC Sierra Classic Tailgate
GMC Sierra Classic Truck Bed Extender
GMC Sierra Classic Trunk Bike Rack
GMC Sierra Classic Vehicle Cargo Control
GMC Sierra Classic Headache Rack
GMC Sierra Classic Truck Bed Sliding Tray
GMC Sierra Classic Camper Tie-Downs
GMC Sierra Classic Truck Bed Bike Rack
GMC Sierra Classic Spare Tire Bike Racks
Performance Accessories
GMC Sierra Classic Cold Air Intake
GMC Sierra Classic Air Filter
GMC Sierra Classic Exhaust
GMC Sierra Classic Suspension Enhancement
GMC Sierra Classic Transmission Cooler
GMC Sierra Classic Performance Chip Tuners
GMC Sierra Classic Vehicle Lights
GMC Sierra Classic Tire Chains
GMC Sierra Classic Fluid Filters
GMC Sierra Classic Vehicle Sway Bars
GMC Sierra Classic Catalytic Converters
GMC Sierra Classic Vehicle Snow Plows
GMC Sierra Classic Salt Spreader
GMC Sierra Classic Vehicle Engine Heaters
GMC Sierra Classic Off Road Lights
GMC Sierra Classic Radiator
GMC Sierra Classic Radiator Fan
GMC Sierra Classic Cabin Air Filter
GMC Sierra Classic Battery
GMC Sierra Classic Lift Assist
Vehicle Trim
GMC Sierra Classic Floor Mats
GMC Sierra Classic Tonneau Cover
GMC Sierra Classic Nerf Bars - Running Boards
GMC Sierra Classic Trim Kits
GMC Sierra Classic Vehicle Covers
GMC Sierra Classic Grille
GMC Sierra Classic Grille Guard
GMC Sierra Classic Bug Shield
GMC Sierra Classic Side Window Vents
GMC Sierra Classic Truck Bed Mat
GMC Sierra Classic Bumpers
GMC Sierra Classic Mud Flaps
GMC Sierra Classic Lamp Guards
GMC Sierra Classic Van Cargo Mat
GMC Sierra Classic Truck Tailgate Lock
GMC Sierra Classic Truck Bed Rail Caps
GMC Sierra Classic Truck Bed Tailgate Assist
GMC Sierra Classic Vehicle Tent
GMC Sierra Classic Vehicle Seat Covers
GMC Sierra Classic Vehicle Tow Hook Step
GMC Sierra Classic Replacement Mirrors
GMC Sierra Classic Windshield Wiper Blades
GMC Sierra Classic Wheel Liners
GMC Sierra Classic Wheel Well Guards
GMC Sierra Classic Battery Box Relocation
GMC Sierra Classic Windshield Covers
GMC Sierra Classic Vehicle Air Mattress
GMC Sierra Classic Wheel Cover
GMC Sierra Classic Truck Bed Camera
Jeep Accessories
GMC Sierra Classic Replacement Top
GMC Sierra Classic Jeep Doors
GMC Sierra Classic Jeep Seats
GMC Sierra Classic Jeep Windows
GMC Sierra Classic Fender Flares
GMC Sierra Classic Jeep Spare Tire Carriers
GMC Sierra Classic Roll Bar Cover
GMC Sierra Classic Jeep Hardware
ATV and UTV
GMC Sierra Classic ATV Hitch
GMC Sierra Classic ATV Winch Mount
GMC Sierra Classic Snow Plow
GMC Sierra Classic UTV Tops
GMC Sierra Classic ATV-UTV Seat Covers
GMC Sierra Classic ATV-UTV Windshield
GMC Sierra Classic ATV-UTV Toolbox
GMC Sierra Classic UTV Tonneau Cover
RV and Fifth Wheel
GMC Sierra Classic RV Vents
GMC Sierra Classic RV Mattress
GMC Sierra Classic RV and Camper Steps
GMC Sierra Classic RV Tires and Wheels
GMC Sierra Classic RV Covers
GMC Sierra Classic RV Fireplace
GMC Sierra Classic RV Furniture
GMC Sierra Classic RV Weight Distribution
GMC Sierra Classic RV Hubs and Drums
GMC Sierra Classic RV Brakes
GMC Sierra Classic RV Roof Membrane
GMC Sierra Classic RV Bearing
GMC Sierra Classic Fifth Wheel King Pin
GMC Sierra Classic Trailer Jack
GMC Sierra Classic Spare Tire Cover
GMC Sierra Classic RV Camera
GMC Sierra Classic RV Doors
GMC Sierra Classic RV Propane
GMC Sierra Classic RV Interior Lighting
GMC Sierra Classic RV Exterior Lighting
GMC Sierra Classic RV Electrical
GMC Sierra Classic RV Power Inlets
GMC Sierra Classic RV Power Cord
GMC Sierra Classic RV Plug Adapters
GMC Sierra Classic RV Transfer Switch
GMC Sierra Classic RV Jack Pads
GMC Sierra Classic RV Jumper
GMC Sierra Classic RV Bike Racks
GMC Sierra Classic RV Antenna and Radio
GMC Sierra Classic RV Air Conditioner
