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1991 - 1997 GMC Sonoma
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We know our products
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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 and GMC Sonoma (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 | — |
Yes, the 91 - 97 GMC Sonoma Curt 2" Class 3 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 13132 (Part #5W-CHW-1678) 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 13132 (Part #5W-CHW-1678) 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 13132 (Part #5W-CHW-1678) 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 13132 (Part #5W-CHW-1678) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Curt 13132 receiver hitch fits 1983–2004 Chevrolet S-10 Pickup, GMC Sonoma Pickup, and GMC S-15 Pickup with Sportside bed models, and 1996–2000 Isuzu Hombre. Confirm your vehicle year, make, model, and bed style before purchase.
The manual notes that some spare tires may need to be lowered or repositioned slightly for hitch installation. For step bumper models with a cradle storage system, the spare tire carrier must be cut along a marked line 1/8" inboard of the frame's outboard edge, then the spare tire is raised back to position after installation.
No. The manual explicitly states "NO DRILLING REQUIRED."
Yes. For Sportside bed models, you must remove the bumper, leaving brackets attached to the frame, and disconnect bumper wiring before removal. For 1998-present models, also remove the plastic step thread from the top of the bumper. The bumper is then reinstalled after the hitch is positioned.
All 1/2" fasteners must be torqued to 110 lb-ft.
The manual specifies gross load capacity when used as a weight-carrying hitch and when used as a weight-distribution hitch, but the specific capacity values are blank in the provided manual. Contact Curt Manufacturing or your retailer for the exact capacity ratings. Do not exceed your vehicle manufacturer's recommended towing capacity.
The kit includes: 6× 1/2-13 UNC Grade 8 hex head cap screws, 2" length (part 10-10286); 2× 1/2-13 UNC Grade 8 hex head cap screws, 1-3/4" length (part 10-10370); 2× 1/2-13 UNC Grade 8 serrated flange nuts (part 20-00062); 6× 1/2-13 UNC Grade 8 hex nuts (part 20-00171); 10× 1/2" flat washers (part 30-00133); and 6× 1/2" lock washers (part 30-00153).
Yes. The hitch has separate attachment holes for short-bed and long-bed models. Position the hitch using the appropriate hole for your bed length.
Yes. The manual states: "Disconnect bumper wiring before removing bumper." For 1998-present models, also remove the plastic step thread from the top of the bumper before removal.
For 1998-present models, the bumper is attached to each bumper bracket by 4 vertical bolts.
Pre-1994 models require 2× 1/2" washers at each bolt location as spacers between the bumper brackets and bumper when reinstalling the bumper. 1994-present models reinstall the bumper without spacer washers. Both use original bumper bolts, and slots in the bumper bracket allow for adjustment.
Only if your vehicle uses a cradle storage system for the spare tire. Steps 3 and 4 are required for early model vehicles with this system: mark the spare tire carrier 1/8" inboard of the outboard edge of the frame, then lower the spare tire and cut off the carrier along the marked line. After hitch installation, raise the spare tire back to position and secure it.
3× 1/2" bolts per side are used to loosely reinstall the bumper brackets. The receiver brackets are sandwiched between the bumper brackets and frame.
Fasteners should be installed loosely during the initial positioning of the receiver and bumper brackets (step 5). All 1/2" fasteners are tightened to 110 lb-ft only after the bumper is reinstalled and the spare tire is raised back to position (step 8).
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify a retorque interval.
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 defective, Curt may repair or replace the product at their option when returned prepaid with proof of purchase. Alteration, misuse, or improper installation voids the warranty. Curt's liability is limited to repair or replacement and excludes incidental or consequential loss or damage.
The manual provides detailed instructions only for Sportside bed models with step bumper configurations. For vehicles with regular bumpers, refer to the installation notes or contact Curt Manufacturing, as the manual does not cover this configuration.
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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