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Complete CURT Class 3 2" trailer hitch and 5-flat wiring kit (with 4-way to 5-way adapter for surge brakes) engineered for the 1985 - 1986 GMC C3500 Excluding with dual exhaust, 10" step bumper or cab & chassis. Vehicle-specific fit, plug-and-play installation, all hardware and instructions included.
This custom kit fits the following vehicles:
All Hardware and Installation Instructions Included!
Whatever your task at hand -- whether it's launching that boat before daybreak, setting up your camper before the rush or getting a final load to the dump before close -- CURT class 3 trailer hitches offer the strength needed for serious towing. They make it easy to hitch up and Bring It, offering a vehicle-specific fit and the weight capacity to handle a variety of trailers. Custom class 3 hitches are the most common type of receiver hitch for pickup trucks and SUVs. Because of their weight range, they are also found on full-size cars, crossovers and minivans. Each custom-fit class 3 hitch package is made for vehicle-specific mounting. This particular kit fits certain years of the Chevy Silverado 3500, C30, C3500, C3500HD, Ford F Super Duty, F350, F350 Super Duty, F450 Super Duty, F550 Super Duty, GMC C3500, C3500HD and K3500 (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 6,000 lbs. GTW and 600 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 10,000 lbs. WD and 1,000 lbs. WDTW. CURT class 3 trailer hitches are typically used to attach and haul utility trailers, boat trailers, campers, snowmobile or ATV haulers and more (NOTE: Never exceed the lowest-rated towing component). Each class 3 hitch has a 2" receiver tube and is tested in accordance with SAE J684 for safety. To ensure that CURT class 3 receiver hitches have what it takes for serious trailering, they are designed using a hands-on approach and are constructed with rugged, high-strength steel and precise welding. We also protect our class 3 hitches in a co-cured finish of liquid A-coat and black powder coat for superior resistance to rust, chipping and UV damage.
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Chevy S10, C10, C20, C30, C1500, K10, K20 and K30 pickup or Suburban and GMC S15, Syclone, C1500, C2500, C3500, K1500, K2500 and K3500 pickup or Suburban and Isuzu Hombre (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1985 - 1986 | GMC C3500 | Excluding with dual exhaust, 10" step bumper or cab & chassis |
Yes, the 85 - 86 GMC C3500 Excluding with dual exhaust, 10" step bumper or cab & chassis Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13028 (Part #5W-CHW-1372) is designed to fit the 1985-1986 GMC C3500.
The 85 - 86 GMC C3500 Excluding with dual exhaust, 10" step bumper or cab & chassis Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13028 (Part #5W-CHW-1372) fits the following vehicles: 1985-1986 GMC C3500. Always verify your specific year, make, and model before ordering.
The 85 - 86 GMC C3500 Excluding with dual exhaust, 10" step bumper or cab & chassis Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13028 (Part #5W-CHW-1372) fits 1985-1986 GMC C3500 models. The 1986 model year is the last year covered by this part number. For newer models, check for an updated version.
The 85 - 86 GMC C3500 Excluding with dual exhaust, 10" step bumper or cab & chassis Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13028 (Part #5W-CHW-1372) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, part number 13028 fits 62-87 Chevy/GMC all full-size vehicles, except those with a 10" bumper. Confirm your vehicle does not have a 10" bumper before purchasing.
Yes, part number 13028 is compatible with 73-79 Ford 250 crew cab models.
Yes, part number 13028 fits 88-91 Chevy/GMC 4-door crew cab models, which includes 1990 Chevy crew cabs.
No. The 13028 is not compatible with vehicles equipped with a 10" bumper. It is excluded from 62-87 Chevy/GMC full-size vehicles that have a 10" bumper.
The 13028 is designed for vehicles with a 34" frame width. It is compatible with 73-06 Chevy/GMC full-size cab & chassis with 34" frame and 73-06 Ford pickup cab and chassis with 34" frame width.
The kit includes 6 bolts (1/2-13 UNC, grade 8, part number 10-10288), 6 serrated flange nuts (1/2-13 UNC, grade 8, part number 20-00062), and 12 square hole spacers 0.250" × 1.50" × 2.00" (part number CM-SP1).
Spacers may be needed to level the hitch. The kit includes 12 square hole spacers (CM-SP1). Use spacers between the hitch and frame as needed to achieve proper levelling.
Yes. Step 1 of the installation requires removing the spare tire and rear bolt on the tire holder. You must also clean the mounting surface as needed. After installation is complete, you should reinstall the spare tire and removed hardware if possible.
Yes, drilling is required. Using the hitch as a template, you must mark and drill 1/2" mounting holes into the frame. Before drilling, ensure that wires and hoses will not be damaged.
You must drill 1/2" mounting holes. The hitch is used as a template to mark the hole locations on the frame.
All 1/2" fasteners must be torqued to 110 lb-ft.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify an exact interval, but regular inspection is required as part of normal maintenance.
Yes. Curt Manufacturing warrants this product to be free of defects in material and workmanship at the time of retail purchase by the original purchaser. If defective, Curt may repair or replace the product at their option when returned prepaid with proof of purchase. Warranty is voided by alteration, misuse, or improper installation.
The 13028 fits 62-87 Chevy/GMC full-size (except 10" bumper), 88-91 Chevy/GMC 4-door crew cab, 73-79 Ford 250 crew cab, and 73-06 Ford/Chevy/GMC cab and chassis models with 34" frame width.
Yes, you must drill 1/2" mounting holes using the hitch as a template. Ensure wires and hoses will not be damaged before drilling.
Yes, remove the spare tire and rear bolt on the tire holder before installation. Clean the mounting surface and reinstall the spare tire after installation if possible.
Torque all 1/2" fasteners to 110 lb-ft.
The kit includes 6 grade 8 bolts (1/2-13 UNC), 6 serrated flange nuts (1/2-13 UNC), and 12 square hole spacers (0.250" × 1.50" × 2.00").
Periodically check that all fasteners are tight and all structural components are sound.
The Curt 55312 T-connector is designed for Chevrolet Blazer, Chevrolet C/K Series Pickup, Chevrolet S-10 Pickup, Chevrolet Suburban, GMC C/K Series Pickup, GMC Sonoma Pickup, GMC Jimmy, GMC Suburban, GMC Syclone, and Isuzu Hombre. Verify your vehicle model matches this list before purchasing.
The taillight wiring harness location T3 is located between the driver's side frame rail and the spare tire. This is where you will insert the T-connector.
Locate the vehicle's taillight wiring harness at location T3 between the driver's side frame rail and spare tire. Separate the vehicle's connectors carefully without damaging the locking tabs. Insert the T-connector between the separated connectors, ensuring both connectors are fully inserted with locking tabs in place.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle's frame. If no suitable point exists, drill a 3/32" hole and secure the white wire using the eyelet and screw provided in the kit.
Drilling is not always required. If a suitable grounding point exists near the connector (such as an existing screw with nut in the vehicle's frame), you can use that. If no suitable point is available, you will need to drill a 3/32" hole for the ground wire.
Drill a 3/32" hole if a suitable existing grounding point is not available. Secure the white wire using the eyelet and screw provided.
Route the 4-flat connector to the center of the vehicle and secure it in a convenient location that is out of the way.
Secure any loose wires using the cable ties provided in the kit.
Before drilling, verify that miscellaneous items hidden behind or under any surface will not be damaged. This precaution avoids damage to vehicle components and personal injury.
The Curt 55312 fits Chevrolet Blazer, C/K Series Pickup, S-10 Pickup, and Suburban; GMC C/K Series Pickup, Sonoma Pickup, Jimmy, Suburban, and Syclone; and Isuzu Hombre.
Drilling is optional. If an existing screw with nut is available on the vehicle frame near the connector, use that for grounding. Otherwise, drill a 3/32" hole.
The kit includes a T-connector, white wire with eyelet, screw, and cable ties. The manual does not specify additional components.
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