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 GMC C1500, C2500, C3500, K1500, K2500 and K3500 (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 55315 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select GMC C1500, C2500, C3500, K1500, K2500, K3500
| Brand | CURT |
|---|---|
| Part Number | 55315 |
| Class ID | 11 |
| Electrical System Type | 2W |
| Install Time | About 1 hour |
| Output Type | 4-Way Flat |
| T-Connector Location | T3 |
| Warranty | One-Year Limited Warranty |
| Weight | 1 lbs |
| Year(s) | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1988-2000 | GMC | C2500 | BASE | Installation Time - 30-60 minutes |
| 1988-2000 | GMC | C3500 | BASE | Installation Time - 30-60 minutes |
| 1988-2000 | GMC | K2500 | BASE | Installation Time - 30-60 minutes |
| 1988-2000 | GMC | K3500 | BASE | Installation Time - 30-60 minutes |
| 1988-1999 | GMC | C1500 | BASE | Installation Time - 30-60 minutes |
| 1988-1999 | GMC | K1500 | BASE | Installation Time - 30-60 minutes |
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Reviewed: CURT 56378 – Custom Wiring Harnesses, N/A
The guys at H&H went the extra mile for me, and I greatly appreciate it. Due to transmission problems in my son’s van, we needed a trailer hitch put on as soon as possible on my van so that we could go on our plans Vacation. H&H made it happen in less than 24 hours Ordering in and installing the required trailer hitch and electrical adapters. The installation was flawless, and the parts worked perfectly. Great job all the way around! I am very pleased!
Every review below is a verified Google review of an H&H store — written by real customers about the people who sold, fitted and stood behind their gear.
I recently had a tonneau cover installed on my truck and was very pleased with the customer service that I received. The associates were very helpful, were great to work with and did an exceptionally well job with the installation. I highly recommend H & H to anyone who is considering doing any truck upgrades. Also, an extra thanks to Cary for all the assistance he provided.
I ordered retractable running boards for my Bronco, then called H&H to install. Tyler got me in the very next day. They did a great job on the install and walked me through the details when I picked the vehicle up. They are my provider of choice for any future upgrades.
The showroom was very clean and the shop area was for employees only but the only thing that was concerned about was the price of the parts and labor but the in and out time was not bad
If you want amazing customer service definitely go here! They were extremely helpful! Thank you!!!!
Very friendly service very helpful
Very helpful and super friendly!!
Go to LEER Truck Accessories by H&H for your truck needs. Luis and Justin were perfect, I purchased my own running boards to get installed on my truck. Let’s just say the prices were VERY REASONABLE!!!!!!!!! My appointment was at 2:00pm and out with my truck at 2:45pm. Job well done guys. We just moved to the area and I was looking for a truck accessories company. You cannot go wrong with LEER Truck Accessories by H&H. So if you are in the area of Marietta off of Cobb Parkway stop by and check those guys out. I will definitely be back for more upgrades for sure. Thanks you have a customer for life!!!!!
I was desperate, I couldn’t open my truck topper door. I stopped there to see if they could help. WOW did they ever! Very great service, friendly & mechanically qualified to help. Had the door open & repaired in less than 15 minutes. I tried to pay & they said; “no charge”. I’m definitely going back there! Mike H
Great communication and customer service!
Bedliner installed, in and out less than 20 minutes
I purchased a roll up cover that came damaged from the factory. Jim was able to kindly replace my broken part with another one. Exceptional customer service.
Just had Arcane Warrior roof rack installed. Unbelievably quick and convenient service. Blake and Garrett were readily available and exceptionally personable. Highly recommend them for any and all truck accessory recommendations, provisions and installations!
Good experience. If you need truck accessories, these are the guys.
⭐️⭐️⭐️⭐️⭐️ WOW – That’s How You Stand Behind Your Work H&H installed my airbags last year, and recently I ran into an issue where they stopped working. From the very first call, they were incredibly helpful and patient, walking me through troubleshooting over the phone trying to save me a trip. When we couldn’t get it resolved, I called first thing Monday morning and they had me scheduled right away. They got the truck in, diagnosed the issue, and replaced the parts — completely under warranty — no hassle, no excuses. A couple hours later I was back on the road. That’s rare service these days. Professional. Honest. Stand-up guys who truly stand behind their work. H&H is hands down the place to go for all your truck needs. 💪
Loved the bed cover they installed, will go back for extra grill lights
Great service , and follow Up. I will be back
I had a rear truck cover issue that had been recurring due to my daughter, slamming the top and it kept coming apart. I took it over there and Kory took care of everything for me as quickly and as efficient as I’ve ever seen anybody, do it highly recommend H&H covers they do really good work in Kory is one of the best Tech. I’ve worked with in a while.. Thanksguys.
They was courteous and professional.They help me and I appreciate it
Great service
Trevor and his team did an outstanding job delivering my new 10' by 16' aluminum shed to a very tight delivery location. The shed is outstanding and I was glad I went with Thrifty Portable Building. I highly recommend them if you are looking for a portable building.
Fast! My order was ready, and installed in less than 24hrs! (Would have been sooner but I had to wait till next day) Staff was very friendly, will definitely be back!
Luke went out his way to make sure we had enough space for the delivery for our new shed!! Thanks Luke! You're awesome!!!!!!!
Had the pool parts we needed and a lot of other things!
Very knowledgeable, great selection and fast install .
Reviews of H&H Truck & Outdoor stores, sourced from Google. They rate our stores and service, not this individual product.
Based on what customers actually buy with this one.
These fit different trucks. and we’ll show the one that fits.
New arrivals, store-only specials and the occasional truck tip from our 22 locations across Alabama, Georgia, Mississippi and Florida.
