Our in-house experts typically reply within one business day.
CURT
Verify Fitment
Select your vehicle to confirm this part fits.
Always the correct part
We know our products
Quality Products
Free Shipping!
Always the correct part
We know our products
Quality Products
Free Shipping!
Complete CURT Class 3 2" trailer hitch and 4-flat custom wiring kit engineered for the 1998 - 2004 GMC Sonoma With roll pan bumper. 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 3,500 lbs. GTW and 350 lbs. TW. It is also compatible with a weight distribution hitch for level towing and a rating of 5,000 lbs. WD and 500 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, GMC Sonoma 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 |
|---|---|---|
| 1998 - 2004 | GMC Sonoma | With roll pan bumper |
The 98 - 04 GMC Sonoma With roll pan bumper Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13920 (Part #CHW-1683) fits 1998-2004 GMC Sonoma models. The 2004 model year is the last year covered by this part number. For newer models, check for an updated version.
The 98 - 04 GMC Sonoma With roll pan bumper Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13920 (Part #CHW-1683) fits the following vehicles: 1998-2004 GMC Sonoma. Always verify your specific year, make, and model before ordering.
Yes, the 98 - 04 GMC Sonoma With roll pan bumper Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13920 (Part #CHW-1683) is designed to fit the 1998-2004 GMC Sonoma.
The 98 - 04 GMC Sonoma With roll pan bumper Curt 2", Class 3 Trailer Tow Hitch + 4-flat Wiring Kit 13920 (Part #CHW-1683) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Part number 13920 is designed for 1982–2004 Chevy S10, S15, and GMC Sonoma pickups equipped with a roll pan. Confirm your vehicle year and model match this range and that your truck has a roll pan before purchasing.
Yes, but short box models require two modifications: the spare tire must be relocated or removed, and the two rear exhaust hanger brackets must be removed during installation and reinstalled after (with the rear bracket flipped over). Plan for these extra steps if you have a short box model.
Yes. The manual states that short box models will require relocation of the spare tire. You must loosen or remove the spare tire as part of the installation process.
The hitch includes 8 hex head cap screws (HHCS), 1/2-13 UNC, 1-1/2 inches long, grade 8, zinc-plated (part 10-10334) and 8 serrated flange nuts, 1/2-13 UNC, grade 8, zinc-plated (part 20-00062). These are the only fasteners supplied.
You will need: a ratchet, 3/4" socket, 3/4" boxed end wrench, a drill with 17/32" bit, aviator shears or tin snips, and a torque wrench. The drill and shears are required because some vehicles need holes drilled and the roll pan must be cut for ball mount access.
The manual does not specify whether the battery must be disconnected. Consult the vehicle manufacturer's service manual or a qualified technician for guidance on electrical safety during this installation.
Some vehicles may require drilling. The manual states to drill holes using a 17/32" drill bit if holes are not already present on both frame rails. The diagram shows where drilling may be needed. Not all vehicles require this step.
Use a 17/32" drill bit if holes need to be drilled on the frame rails. Drill on both the driver side and passenger side frame rails where indicated in the diagram.
Yes. The manual states that cutting of the roll pan is required. Specifically, you must cut the roll pan in the license plate area to provide access for the ball mount installation. Use aviator shears or tin snips for this work.
The license plate must be repositioned when the ball mount is installed. The manual does not provide specific details on the new mounting location; consult local regulations and the ball mount instructions for proper repositioning.
All 1/2" fasteners must be torqued to 110 lb-ft. This applies to the 8 hex head cap screws and 8 serrated flange nuts that secure the hitch to the frame rails.
Curt Manufacturing warrants the 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 it at their option when returned prepaid with proof of purchase. Warranty is voided by alteration, misuse, or improper installation.
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 or maintenance schedule; consult the vehicle manufacturer's service manual for recommended inspection intervals.
Yes, Curt 13920 fits 1982–2004 Chevy S10 and S15 pickups with a roll pan. If you have a short box, you'll need to relocate the spare tire and exhaust brackets.
Ratchet, 3/4" socket, 3/4" wrench, drill with 17/32" bit, tin snips, and torque wrench. Drilling and roll pan cutting are required.
Yes, cutting the roll pan in the license plate area is required to provide access for the ball mount. Use tin snips or aviator shears.
Torque all 1/2" fasteners to 110 lb-ft.
Yes, but you must relocate the spare tire and remove and reinstall the two rear exhaust hanger brackets (flipping the rear bracket over).
Use a 17/32" drill bit if holes are not already present on the frame rails.
Yes, the Curt 55359 custom wiring harness is designed for Chevrolet S-10 pickup trucks. It is also compatible with GMC Sonoma pickup and Isuzu Hombre pickup trucks. The harness mounts behind the driver side rear bumper (location T3).
Yes, the Curt 55359 is compatible with GMC Sonoma pickup and Isuzu Hombre pickup trucks, in addition to the Chevrolet S-10. All three vehicles use the same wiring harness installation procedure.
No special tools are required for installation. However, you may need a drill with a 3/32" bit if a suitable grounding point with an existing screw and nut is not available on your vehicle frame.
Locate the vehicle taillight wiring harness connectors at the taillight housing. Separate the connectors carefully without damaging the locking tabs. Insert the custom wiring harness end between the separated connectors, ensuring they are fully inserted with locking tabs in place.
Drilling is required only if a suitable grounding point with an existing screw and nut is not available on your vehicle frame. If drilling is necessary, you will drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
Locate a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame. The area must be free of rust, dirt and paint. If no existing point is available, drill a 3/32" pilot hole and use the provided screw. Secure the white ground wire using the ring terminal and provided screw.
When in use, route the 4-flat connector to the center of the vehicle and out of the trunk. When not in use, roll up and store in a convenient, out-of-the-way location inside the trunk. Secure any loose wires with the provided cable ties.
The Curt 55359 includes the custom wiring harness with a 4-flat connector, a ground screw with ring terminal, cable ties for securing loose wires, and a 4-flat dust cover to help prevent corrosion.
Test for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the wiring harness functions properly. If you need more information, check your vehicle owner's manual or contact the vehicle manufacturer.
Yes, install the provided 4-flat dust cover to help prevent corrosion. This should be done as part of the final installation step.
The Curt 55359 fits Chevrolet S-10 pickup, GMC Sonoma pickup, and Isuzu Hombre pickup trucks.
No special tools are required. A drill with 3/32" bit may be needed if drilling a ground screw pilot hole.
Drilling is only required if no existing screw and nut grounding point is available on your vehicle frame. If needed, drill a 3/32" pilot hole.
Separate the taillight connectors, insert the harness between them with locking tabs in place, ground the white wire to the vehicle frame, and secure loose wires with cable ties.
Test using a test light or by connecting a properly wired trailer to verify proper function.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating and potential fire.
Total for 4 items:
$534.74$571.41
On Sale Today
Original price was $463.90. Current price is $429.74.You save $34.16 (7%)
Free Shipping
Ships free on all orders
Authorized Dealer
Quick Ship
In stock and ready to ship — order now!
FREE ShippingFREE SHIPPING
Estimated delivery Tue, Aug 25 - Fri, Aug 28
Order before 2 PM EST Monday–Friday for same-day processing
Guaranteed safe & secure checkout
No reviews have been added for this product.