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CURT
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2010 - 2017 GMC Terrain
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| Side Application Type Description | Blank |
| T-Connector Location | S1,S2 |
| Warranty | One-Year Limited Warranty |
| Electrical System Type | 2W |
| Finish | N/A |
| Material | Blank |
| Mount Type Description | Blank |
| Output Type | 4-Way Flat |

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 |
|---|---|---|
| 2010 - 2017 | GMC Terrain | — |
Yes, the 10-17 GMC Terrain CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1304) is designed to fit the 2010-2017 GMC Terrain.
The 10-17 GMC Terrain CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1304) fits the following vehicles: 2010-2017 GMC Terrain. Always verify your specific year, make, and model before ordering.
The 10-17 GMC Terrain CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1304) fits 2010-2017 GMC Terrain models. The 2017 model year is the last year covered by this part number. For newer models, check for an updated version.
The 10-17 GMC Terrain CURT 4-flat Plug and Play Trailer Wiring (Part #CTW1304) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
No. The Curt 56094 is designed for Chevrolet Equinox and GMC Terrain models without a tow package only. If your vehicle has a factory tow package, this harness is not compatible. Check your vehicle documentation or contact the vehicle manufacturer to confirm whether your Equinox or Terrain has a tow package.
Yes. The Curt 56094 is compatible with GMC Terrain models without a tow package. Verify your vehicle does not have a factory tow package before installation.
You will need a panel trim removal tool. The manual also references the need to drill a 3/32" pilot hole if a suitable existing grounding point is not available, so a drill with a 3/32" bit is recommended. A test light or properly wired trailer is needed to test the harness after installation.
Yes. You must disconnect the negative battery terminal before beginning installation. This is the first step in the installation process. Reconnect the battery only after the taillights have been reinstalled and all wiring connections are complete.
After removing the taillights and locating the vehicle taillight wiring harness connectors behind the taillight housing, insert the custom wiring harness end with the yellow wire between the separated connectors. Ensure the connectors are fully inserted with locking tabs in place. Repeat this process on the passenger side using the harness end with the green wire. Take care not to damage the locking tabs when separating the original connectors.
Route the custom wiring harness end with the green wire down through the opening under the driver side taillight, then along the back of the bumper to the passenger side. When in use, route the 4-flat connector to the center of the vehicle. When not in use, roll up and store in a convenient, out-of-the-way location. Secure any loose wires with the provided cable ties.
Not necessarily. First, locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. If no suitable existing point is available, you may drill a 3/32" pilot hole for the provided screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. The grounding area should be free of rust, dirt and paint.
Drill a 3/32" pilot hole if a suitable existing grounding point is not available. The area should be free of rust, dirt and paint before securing the white ground wire using the ring terminal and provided screw.
The manual does not specify the product rating. However, you must not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding the rating can cause loss of warranty, overheating and potential fire. Check your vehicle owner's manual or contact the vehicle manufacturer for the tow vehicle lamp load rating.
Once installed, 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 will function properly. The manual emphasizes that testing is required to confirm correct installation.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location. This helps protect the connector and keeps it organized when the trailer is not connected.
Yes. A 4-flat dust cover is provided with the harness. Install it after reconnecting the negative battery terminal to help prevent corrosion.
Two fasteners secure each taillight assembly in place. You will need to remove these fasteners to access the taillight wiring connectors during installation.
The Curt 56094 fits Chevrolet Equinox and GMC Terrain models without a factory tow package only.
You need a panel trim removal tool. A drill with a 3/32" bit is recommended for the ground wire installation if an existing grounding point is not available.
Yes. Disconnect the negative battery terminal before starting installation and reconnect it only after the taillights are reinstalled.
Drilling is not always required. A suitable existing grounding point (such as an existing screw with nut in the vehicle frame) may be used. If no existing point is available, drill a 3/32" pilot hole for the provided ground screw.
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.



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