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  1. Custom Fit Vehicle Wiring
  2. GMC
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  4. 2003
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FITS 2003 GMC Sierra
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # C55384
Retail:$45.95
Our Price: $35.67
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Custom Fit Vehicle Wiring
Confirmed to Fit
2003 GMC Sierra

with factory 7-Way

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CURT custom fit vehicle wiring for your 2003 GMC Sierra are available from etrailer.com. Installation instructions and reviews for your GMC custom fit vehicle wiring. Expert service, and great custom fit vehicle wiring prices. etrailer.com carries a complete line of CURT products. Order your Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector part number C55384 online at etrailer.com or call 1-800-940-8924 for expert service.
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2003 GMC Sierra - Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

  • Custom Fit
  • 4 Flat
  • Trailer Hitch Wiring
  • CURT
  • No Converter

Quickly and easily install a 4-way trailer connector on your GMC Sierra with this custom harness. T-connector plugs directly into 7-way OEM tow package wiring harness - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package that has a 7-way connector
    • Retains 7-way connector functionality
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection points behind rear bumper
    • Plug in T-connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper. Simply plug the harness in-line with your existing 7-way wiring harness.


Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.



55384 CURT T-Connector - OE 4-Flat Upgrade

Installation Details C55384 Installation instructions

California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - C55384

Average Customer Rating:  4.8 out of 5 stars   (628 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into 7-way OEM tow package wiring harness - no cutting, splicing or tapping required.

by:

Quick & easy trailer wiring harness replacement . took less than 15 minutes

Vincent C.

3/22/2024

1 year &amp still works great, very easy plug &amp play setup. I recommend putting a small amount of white lithium grease on those connecting, helps protest against rusting.



by:
2005 Chevrolet Silverado

Installation was very easy and only took about 15 minutes to hook up and secure wiring on truck.



by:
2005 Ram 2500

Top quality trailer hitch at a very reasonable price!
Chevy 2500 HD 2005 Duramax



by:

Yup. Still works after a year in operation. The only thing I am unhappy with is my vehicle thinks there is always a trailer connected and the backup sensors and side sensors are automatically disabled.



by:

This product was exactly what was portrayed on line. Wiring harness was very simple to install and works extremely well.



by:

Works well easy plug and play



by:

When I finally installed it about 3 months ago, the plug in connectors did not match what I had on my truck. I ended up just cutting them off and splicing them into the connector from my truck



by:
2017 Jeep Grand Cherokee

Easy plug and play simple installation.



by:
2014 Chevrolet Silverado

Exactly as described. Fit perfectly into my 2014 Silverado bumper outlet.



by:
2018 Dodge Ram Pickup

I installed my Curt T-Connector today to my 2018 RAM 1500 Sport 4x4 Crew Cab. The mileage on the truck is at 10679km's. Although warned that the spare tire might require removal (via web site info from fellow RAM owners) that was not the case as there was enough room to remove the OEM connector (which is the short end of the assembly) from the factory housing. The actual disconnect and re-connect took only a couple minutes. I spent a about 15 or 20min's trying different wiring run routings for the aux. four connector plug wiring run. Some tie-wraps where installed to snug things up out of the way and I was done. I also dosed the connections with a shot of Krown 77 lube/rust inhibitor. I'm in the "Great White North" so salt use on roads is a given during the winter months. A quick test run of the lights and I was done. The build quality of the T-Connector is very good..equal to OEM or better I'd say.



by:

No issues thank you



by:
2001 Chevrolet Silverado

Unfortunately, the product ordered did not fit my application and I will be returning!

Etrailer Expert

Jenny N.

7/26/2023

I wanted to ask if your 2001 Chevy Silverado came with the tow package? Did you already have a factory seven way? If not, the part # C59236 would be the better fit.



by:

Fast delivery, and easy to find products. Second trailer hitch I bought from e-trailer. Great products



by:

Easy to install



by:

Awesome!! I bought an OPT7 triple LED light bar for my Chevy Colorado and I didn’t want to splice wires or lose a whole lot of time trying to figure out how to wire it up so I googled and I came across a gentleman who used this product and Im very thankful for this connection and my light bar works smoothly and I have full use of the reverse camera AND I don’t have any wire mess outside or underneath my truck! Easy to install, my first time doing this and it literally took me about 2 minutes, if that! Definitely would recommend this product to anyone with a truck!! Thank you guys!!



by:

Perfect fit



by:

Was exactly as stated in description. Just unplugged old plug and plugged in new one. I had two plugs to replace and added an extra "T" plug for another 4 prong. It only took less than 15 minutes to install all 3. Customer service is wonderful. Everything I have bought from ETrailer is top notch and delivered on time or earlier.

Virgil

6/7/2023

Working GREAT. Easy to install



by:
2013 Jeep Grand Cherokee

Order class iii hitch and wiring harness for my 13 keep grand Cherokee . Came next day. Installed in 20 minutes. Great product. High quality and easy install

Product was shrink wrapped, taped and boxed ver professionally. Website also very easy to use

Would definitely recommend to anyone



by:
2003 GMC Yukon

Perfect fit!



by:

This is a great vehicle to trailer wiring harness just plug it in and you're ready to go and that's all they are to it plug and go and I recommend it.



by:
2013 Chevrolet Avalanche

Easy to install works great shipping and communications was fantastic. Now my USMC LED light hitch cover is on the truck without an adapter.



by:

Perfect fit. Took 20 minutes to install wire harness and hitch receiver.



by:
2019 Ford Ranger

Easy instructions, installation was a breeze. Very important to torque bolts down to spec. Also will need to have dealer “flash” vehicle to activate trailer lights. 5 stars



by:
2011 Chevrolet Silverado

Took less then 5 min to install, solved the hassle of going to a brand name shop and paying 5 to 6 times to have them install. Plan on towing a utility trailer my wife and I do a lot of antique shopping. Will tell all my friends, great product



by:
2011 Ram 1500

Arrived on time and just what I need.


25
628
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