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1991 - 1997 GMC Sonoma
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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 1991 - 1997 GMC Sonoma. 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 S10, GMC S15, GMC Sonoma and Isuzu Hombre (see application info to verify vehicle compatibility). It provides a weight carrying capacity of 4,000 lbs. GTW and 400 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 6,000 lbs. WD and 600 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 |
|---|---|---|
| 1991 - 1997 | GMC Sonoma | — |
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Yes, the 91 - 97 GMC Sonoma Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13021 (Part #5W-CHW-1680) is designed to fit the 1991-1997 GMC Sonoma.
The 91 - 97 GMC Sonoma Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13021 (Part #5W-CHW-1680) fits the following vehicles: 1991-1997 GMC Sonoma. Always verify your specific year, make, and model before ordering.
The 91 - 97 GMC Sonoma Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13021 (Part #5W-CHW-1680) fits 1991-1997 GMC Sonoma models. The 1997 model year is the last year covered by this part number. For newer models, check for an updated version.
The 91 - 97 GMC Sonoma Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13021 (Part #5W-CHW-1680) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes. The Curt 13021 is designed for 1983–2004 Chevrolet S-10 Pickups. It is compatible with both standard and Sport Side bed models.
Yes. The Curt 13021 is compatible with 1983–2004 GMC S-15 and Sonoma Pickups, including Sport Side models.
Yes. The Curt 13021 is compatible with 1996–2000 Isuzu Hombre models.
No. The Curt 13021 is designed for 1983–2004 Chevrolet S-10 Pickups only. A 2005 model is outside the supported range.
Possibly. The manual notes that some spare tires may need to be lowered and repositioned for hitch installation on Sport Side bed models. If your vehicle uses a cradle storage system for the spare tire, you may need to lower and reposition it during installation.
It depends on your vehicle model year. For Sport Side bed models, you only need to remove bumper bracket bolts. For Step Bumper models, you must remove the entire bumper, leaving the brackets attached to the frame, and disconnect the bumper wiring.
Pre-1994 models have the bumper attached to each bracket by two horizontal bolts. 1994–1997 models use two vertical bolts per bracket. 1998–present models have the bumper attached with four vertical bolts and include a plastic tread on top of the bumper that must be removed before installation.
1. Remove bumper bracket bolts and return them to the vehicle owner. 2. Position the hitch on the frame and install fasteners as shown in the parts diagram. Note: Some spare tires may need to be lowered and repositioned for hitch installation.
1. Remove the bumper, leaving brackets attached to the frame, and disconnect bumper wiring. 2. Remove bumper brackets from the frame and remove bumper wiring guides from the brackets. 3. If the vehicle uses a cradle storage system for the spare tire, mark the spare tire carrier 1/8" inboard of the outer frame edge, lower the spare tire, and cut off the carrier along the marked line. 4. Position the receiver on the frame and loosely install bumper brackets using three M12 bolts and fasteners per side, with receiver brackets positioned between bumper brackets and frame. 5. Reinstall the bumper on bumper brackets with original bolts (pre-1994 models use three 1/2" washers at each bolt location as spacers). 6. Raise the spare tire back into position and secure. Reconnect bumper wiring. 7. Torque M12 fasteners to 79 lb.-ft and all 1/2" fasteners to 110 lb.-ft.
No. The manual explicitly states "NO DRILLING REQUIRED" for this hitch.
Only if your vehicle uses an early model cradle storage system for the spare tire. If so, mark the spare tire carrier 1/8" inboard of the outer frame edge, lower the spare tire, and cut off the carrier along the marked line. This step applies only to Step Bumper models with cradle storage systems.
The hitch includes: 6 conical toothed washers (1/2"), 6 M12–1.75 x 50 mm hex bolts, 6 M12–1.75 hex nuts, 2 hex flange nuts (HFN 1213), 12 FW12 flat washers, and 2 1/2–13 x 1 3/4 hex bolts.
M12 fasteners must be torqued to 79 lb.-ft.
All 1/2" fasteners must be torqued to 110 lb.-ft.
The hitch weight is 38 lbs.
The manual does not provide specific capacity values in the source document. However, it states: "DO NOT EXCEED VEHICLE MANUFACTURER'S RECOMMENDED TOWING CAPACITY." You must consult your vehicle's owner manual or the manufacturer for the correct towing limits.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. This is a routine maintenance requirement to ensure safe operation.
Curt Manufacturing warrants the product to be free of defects in material and/or workmanship at the time of retail purchase by the original purchaser. If the product is found to be defective, Curt Manufacturing may repair or replace it at their option when returned prepaid with proof of purchase. Alteration, misuse, or improper installation voids the warranty.
The Curt 13021 fits 1983–2004 Chevrolet S-10 Pickup, 1996–2000 Isuzu Hombre, and 1983–2004 GMC S-15 and Sonoma Pickups, including Sport Side models.
Torque M12 fasteners to 79 lb.-ft and all 1/2" fasteners to 110 lb.-ft.
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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