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Complete CURT Class 4 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 the next item is on your to-do list -- whether it's arriving at the jobsite before dawn or getting your travel trailer set up in time to see the sunset -- CURT class 4 trailer hitches offer greater towing power to let you Bring It. These custom receiver hitches are built to tackle bigger jobs and bolder adventures, all while giving you a custom fit for your vehicle. Class 4 hitches are available for a variety of makes and models, from pickup trucks and SUVs to full-size and commercial vans. This particular class 4 hitch fits certain years of the Chevy C30, C3500, C3500HD or Silverado 3500, Ford F Super Duty, F350, F350 Super Duty, F450 Super Duty or F550 Super Duty and GMC C3500, C3500HD or K3500 (to verify vehicle compatibility, see application info). It provides a weight carrying capacity of 10,000 lbs. GTW and 1,000 lbs. TW. It can also accept a weight distributing hitch, offering a maximum WD capacity of 12,000 lbs. and a WDTW of 1,200 lbs. CURT class 4 tow hitches are as much suited for work as they are for play. With their high load capacities, they are typically used for towing larger trailers, including everything from a double-axle utility trailer or livestock trailer to a full-length camper or large boat trailer (NOTE: Never exceed the lowest weight capacity of any towing component). All CURT class 4 receiver hitches come with a 2" receiver tube opening and all the necessary hardware for a complete installation. From light-duty to heavy-duty, every CURT custom hitch is engineered to be vehicle-specific, using actual vehicles to create the optimal design. We then combine high-strength steel, precise welding and a co-cured finish of liquid A-coat and durable black powder coat to provide you with a hitch you can depend on. To prove it, we test all our hitches in accordance with SAE J684 for safety.
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 4 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 14082 (Part #5W-CHW-1373) 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 4 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 14082 (Part #5W-CHW-1373) 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 4 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 14082 (Part #5W-CHW-1373) 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 4 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 14082 (Part #5W-CHW-1373) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, Curt part number 14082 fits 73-06 Chevrolet/GM all full-size vehicles with a 34" frame, and 62-73 Chevrolet/GM full-size vehicles. Your 1985 Chevrolet full-size falls within the 73-06 range. Confirm your vehicle has a 34" frame before purchasing.
Yes, Curt part number 14082 is compatible with 73-79 Ford F-250 crew cab models. Your 1975 F-250 crew cab falls within this range.
Yes, Curt part number 14082 fits 73-97 Ford F-350 vehicles with a 34" frame.
Yes, Curt part number 14082 is compatible with 62-73 Chevrolet/GM full-size vehicles, which includes your 1970 model.
The hitch weight is listed as 49 lbs.
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 measuring 0.250 x 1.50 x 2.00 inches (part number CM-SP1).
Yes. Step 1 of the installation instructions requires you to remove the spare tire and the rear bolt of the spare tire holder before positioning the hitch.
Yes. Step 1 requires you to clean away any mud and most of the undercoating if present before positioning the hitch.
Yes, drilling is required. The manual explicitly states "DRILLING REQUIRED" and you must drill six mounting holes (three per side) using a 1/2" drill bit. Before drilling, check the vehicle frame to ensure no wires or hoses will be damaged.
You must use a 1/2" drill bit to drill all six mounting holes.
The manual specifies a drill with a 1/2" drill bit and eye protection. A torque wrench is needed to torque fasteners to 110 lb.-ft. The manual notes that help may be required to hold the receiver in position while marking mounting holes.
Position the receiver so that the receiver tube extends approximately even with the end of the vehicle. Use the receiver as a template to mark the six mounting holes. A square hole spacer should be used between the side plates and the frame to clear rivets.
The 12 included square hole spacers (0.250 x 1.50 x 2.00 inches, part number CM-SP1) are placed between the side plates and the frame to clear rivets during installation.
All mounting hardware must be torqued to 110 lb.-ft.
Always use proper eye protection when operating a drill. Before drilling, check the frame of the vehicle to ensure no wires or hoses will be damaged by the drilling process.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. This ongoing inspection helps maintain safe operation.
Curt Manufacturing warrants this product to be free of defects in material and/or 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.
Curt 14082 fits 73-06 Chevrolet/GM full-size with 34" frame, 62-73 Chevrolet/GM full-size, 73-79 Ford F-250 crew cab, and 73-97 Ford F-350 with 34" frame.
Yes, drilling is required. You must drill six mounting holes (three per side) using a 1/2" drill bit. Check for wires or hoses before drilling.
Torque all mounting hardware to 110 lb.-ft.
Six 1/2-13 UNC Grade 8 bolts, six 1/2-13 UNC Grade 8 serrated flange nuts, and twelve 0.250 x 1.50 x 2.00" square hole spacers.
Yes, remove the spare tire and rear bolt of the spare tire holder before positioning the hitch.
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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