1981 GMC C3500 Towing Products

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.

Product Features:

• Plugs into vehicle tail light assembly to provide a 4-way flat socket
• Simple plug-and-play design eliminates the need for cutting or splicing
• 4-way flat output connects tail lights, brake lights and turn signals
• Dust cover included to keep connector clean when not in use

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

• CarQuest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.

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 2500, C1500, C2500, C3500 or C3500HD and GMC Sierra 2500, C1500, C2500, C3500 or C3500HD (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.

Product Features:

• Rated to 6,000 lbs. gross trailer weight and 600 lbs. tongue weight
• Compatible with weight distribution hitch (10,000 lbs. WD / 1,000 lbs. WDTW)
• Engineered with a vehicle-specific design for a custom fit
• Concealed main body for OE look and seamless integration with the vehicle
• Tested for safety in accordance with SAE J684
• Precisely welded for superior strength and fit
• Protected by a durable high-gloss black powder coat finish
• Co-cured in a rust-resistant liquid A-coat, inside and out
• Equipped with an open-back receiver for easy cleaning
• Made in USA (may include imported hardware)

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.

Product Features:

• Rated to 6,000 lbs. gross trailer weight and 600 lbs. tongue weight
• Compatible with weight distribution hitch (10,000 lbs. WD / 1,000 lbs. WDTW)
• Engineered with a vehicle-specific design for a custom fit
• Concealed main body for OE look and seamless integration with the vehicle
• Tested for safety in accordance with SAE J684
• Precisely welded for superior strength and fit
• Protected by a durable high-gloss black powder coat finish
• Co-cured in a rust-resistant liquid A-coat, inside and out
• Equipped with an open-back receiver for easy cleaning
• Made in USA (may include imported hardware)

Don’t splice onto your vehicle’s factory wiring harness. Simply plug in this Hopkins® vehicle wiring kit featuring exact OEM matching connectors for a perfect weather-tight fit. This kit includes the accessories needed to get you towing faster.

Product Features:

• Plug-In Simple!® Wiring Kit
• Utilizes OEM connectors for enhanced fit and weatherproofing
• Includes vehicle side 4 flat
• Corrosion resistant terminals
• Impact and corrosion resistant
• Includes dust cover and grease packet to prevent corrosion
• Includes Step-By-Step Instructions

Don’t splice onto your vehicle’s factory wiring harness. Simply plug in this Hopkins® vehicle wiring kit featuring exact OEM matching connectors for a perfect weather-tight fit. This kit includes the accessories needed to get you towing faster.

Product Features:

• Plug-In Simple!® Wiring Kit
• Utilizes OEM connectors for enhanced fit and weatherproofing
• Includes vehicle side 4 flat
• Corrosion resistant terminals
• Impact and corrosion resistant
• Includes dust cover and grease packet to prevent corrosion
• Includes Step-By-Step Instructions

Dont splice onto your vehicles factory wiring harness. Simply plug in this Hopkins® vehicle wiring kit featuring exact OEM matching connectors for a perfect weather-tight fit. This kit includes the accessories needed to get you towing faster.

Product Features:

• Plug-In Simple® Wiring Kit
• Utilizes OEM Connectors For Enhanced Fit And Weatherproofing
• Includes Vehicle Side 4 Flat
• Corrosion Resistant Terminals
• Impact And Corrosion Resistant
• Includes Dust Cover And Grease Packet To Prevent Corrosion
• Includes Step-By-Step Instructions

It does not matter what you haul, you need to make sure to secure it properly in order to protect your truck, yourself and other motorists. Dee Zee Cab Rack Tie Downs offer a reliable method for securing your cargo to your cab rack. Designed to fit into your cab rack integrated channel, our Tie Downs glide along your rack accessory channel tightening into place for virtually endless possibilities.

Product Features:

• Tie Down Anchor For Cargo
• Cast Aluminum Finish
• Fits Into Integrated Channel In Cab Rack
• No Drilling Required

Class I Trailer Hitch

Product Features:

• 2″ Square Receiver Tube Opening
• Ultra Frame receivers are designed for full size long wheelbase trucks, vans and utility vehicles with full frames and heavy-duty suspensions
• Strong, secure heavy-duty side bracket design
• Ideal for high tongue weight applications
• Neat Appearance, All Frame Attachments
• A-Coat Base with Black Powder Coat Finish
• Rated up to 15,000 lbs. (GTW) Weight Carrying (WC)
• Rated up to 16,000 lbs. (GTW) Weight Distributing (WD)
• Solid All-Welded Construction for Maximum Strength and Safety
• Custom Built According to Manufacturer & Model Year
• Ensures Perfect Fit and Top Towing Performance
• Computer-Aided Design and Fatigue Stress Testing
• Designed to Withstand Road Abuse Within Specified Capacities

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 or GMC C1500, C2500, C3500, K1500, K2500, K3500, Silverado / Sierra 1500 and 2500 (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.

Product Features:

• Rated to 10,000 lbs. gross trailer weight and 1,000 lbs. tongue weight
• Compatible with weight distribution hitch (12,000 lbs. WD / 1,200 lbs. WDTW)
• Engineered with a vehicle-specific design for a custom fit
• Concealed main body for OE look and seamless integration with the vehicle
• Tested for safety in accordance with SAE J684
• Precisely welded for superior strength and fit
• Protected by a durable high-gloss black powder coat finish
• Co-cured in a rust-resistant liquid A-coat, inside and out
• Equipped with an open-back receiver for easy cleaning
• Made in USA (may include imported hardware)

Convenient repair and replacement options for simple trailer wiring repairs.

Convenient repair and replacement options for simple trailer wiring repairs.

Convenient repair and replacement options for simple trailer wiring repairs.

For use with 75 Series and HI Series winches.

Product Features:

• Winch Hydraulic Fittings

Add light mounts to your Dee Zee Aluminum or Steel Headache Rack or Rear Rack. With these convenient mounts that slide into the built in channel system, mounting your auxiliary lights is quick and easy. Several size options to meet your needs.

Product Features:

• Made From Rugged Steel
• Protective Gloss Black Powder Coat Finish
• Utilize The Accessory Channel On Aluminum Cab Racks
• Several Size Options To Meet Your Needs
• Made In USA

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.

Product Features:

• Rated to 10,000 lbs. gross trailer weight and 1,000 lbs. tongue weight
• Compatible with weight distribution hitch (12,000 lbs. WD / 1,200 lbs. WDTW)
• Engineered with a vehicle-specific design for a custom fit
• Concealed main body for OE look and seamless integration with the vehicle
• Tested for safety in accordance with SAE J684
• Precisely welded for superior strength and fit
• Protected by a durable high-gloss black powder coat finish
• Co-cured in a rust-resistant liquid A-coat, inside and out
• Equipped with an open-back receiver for easy cleaning
• Made in USA (may include imported hardware)

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 older years of Ford, GMC and Chevy pickup trucks (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.

Product Features:

• Rated to 6,000 lbs. gross trailer weight and 600 lbs. tongue weight
• Compatible with weight distribution hitch (10,000 lbs. WD / 1,000 lbs. WDTW)
• Engineered with a vehicle-specific design for a custom fit
• Concealed main body for OE look and seamless integration with the vehicle
• Tested for safety in accordance with SAE J684
• Precisely welded for superior strength and fit
• Protected by a durable high-gloss black powder coat finish
• Co-cured in a rust-resistant liquid A-coat, inside and out
• Equipped with an open-back receiver for easy cleaning
• Made in USA (may include imported hardware)

Gives safe and easy access to the side and top rack of any service truck where exterior tool boxes are used. This step fits commercial, industrial, utility, fire prevention and service trucks that have service truck side tool boxes with flat bottoms or a flat platform area that has access to both sides of the mounting area.

Product Features:

• Large 24 Inch Or 12 Inch Non Skid Cast Step For Increased Safety
• Conveniently Tucked Away When Not In Use
• Interior Steel Straps For Additional Strength
• When Pulled Out Both Feet Fit On The Step
• Fully Assembled
• Easy To Install
• Hands Free

The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.

Product Features:

• Exclusive New Multi Mount System
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy
• Rugged Tread Pattern Provides For Safe And Attractive Non Slip Surface
• Unique Design Gives The Vehicle A Rugged Off-Road Look, While Being A Stylish Accent For Today Vehicles
• Strong Construction To Hold Up Under Extreme Conditions
• Black Powder Coat Finish Features A Lightly Textured Matte Finish That Resists Scratching, Peeling And Fading
• Strongest And Easy Installation

Uniquely designed diamond tread pattern provides a safe non slip surface on the flat step area. Our exclusive multi mount system is designed for precision fit and easier installation. Constructed of an extremely strong die cast aluminum alloy for the ultimate in quality and durability. Rocker panel installation provides for the strongest and easiest installation of any step products.

Product Features:

• Exclusive New Multi Mount System
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy
• Rugged Diamond Tread Pattern Provides For Safe And Attractive Non Slip Surface
• Unique Design Gives The Vehicle A Rugged Off Road Look, While Being A Stylish Accent For Today Vehicles
• Strong Construction To Hold Up Under Extreme Conditions
• Black Powder Coat Finish Features A Lightly Textured Matte Finish That Resists Scratching, Peeling And Fading
• Strongest And Easy Installation

Uniquely designed diamond tread pattern provides a safe non slip surface on the flat step area. Our exclusive multi mount system is designed for precision fit and easier installation. Constructed of an extremely strong die cast aluminum alloy for the ultimate in quality and durability. Rocker panel installation provides for the strongest and easiest installation of any step products.

Product Features:

• Exclusive New Multi Mount System
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy
• Rugged Tread Pattern Provides For Safe And Attractive Non Slip Surface
• Unique Design Gives The Vehicle A Rugged Off-Road Look, While Being A Stylish Accent For Today Vehicles
• Strong Construction To Hold Up Under Extreme Conditions
• Mechanical Polished Finish That Will Not Rust, Crack Or Peel And Requires Very Little Maintenance
• Strongest And Easy Installation

Uniquely designed diamond tread pattern provides a safe non slip surface on the flat step area. Our exclusive multi mount system is designed for precision fit and easier installation. Constructed of an extremely strong die cast aluminum alloy for the ultimate in quality and durability. Rocker panel installation provides for the strongest and easiest installation of any step products.

Product Features:

• Exclusive New Multi Mount System
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy
• Rugged Tread Pattern Provides For Safe And Attractive Non Slip Surface
• Unique Design Gives The Vehicle A Rugged Off-Road Look, While Being A Stylish Accent For Today Vehicles
• Strong Construction To Hold Up Under Extreme Conditions
• Black Powder Coat Finish Features A Lightly Textured Matte Finish That Resists Scratching, Peeling And Fading
• Strongest And Easy Installation

LD step will give the user easier access to the vehicle due to the wider and deeper stepping surface which extends further than our other steps. The LD step is available in our three durable finishes, and installation is a cinch with our mounting system.

Product Features:

• Easier Entry And Exit From Your Vehicle
• Wide Functional Step Area
• Extends Further Than Our Current Steps
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy For Extreme Longevity
• New Aggressive And Appealing Tread Design For A Non-Slip Surface
• Unique Design That Enhances The Looks Of Current Vehicle Body Styles
• Resists Scratches, Peeling And Fading
• Rocker Panel Installation Provides For The Strongest And Easiest Installation Of Any Step Products

The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.

Product Features:

• Exclusive New Multi Mount System
• Made Of Corrosion Resistant, Durable Cast Aluminum Alloy
• Rugged Tread Pattern Provides For Safe And Attractive Non Slip Surface
• Unique Design Gives The Vehicle A Rugged Off-Road Look, While Being A Stylish Accent For Today Vehicles
• Strong Construction To Hold Up Under Extreme Conditions
• Mechanical Polished Finish That Will Not Rust, Crack Or Peel And Requires Very Little Maintenance
• Strongest And Easy Installation