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Select your vehicle to confirm this part fits.
2020 - 2024 Buick Encore GX
Confirmed to Fit
2021 - 2026 Chevrolet Trailblazer
Confirmed to Fit








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Always the correct part
We know our products
Quality Products
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Backed by a limited one-year warranty

| Material | THERMOPLASTIC RUBBER |
CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Although this special socket is not equipped on every vehicle, a CURT custom wiring connector -- also called a T-connector -- utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle's wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard, universal vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. 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 Buick Encore GX and Chevrolet Trailblazer (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®.'
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2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2020 - 2024 | Buick Encore GX | — |
| 2021 - 2026 | Chevrolet Trailblazer | — |
Yes, the CURT 56541 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore GX, Chevrolet Trailblazer (Part #BKDK56541) is designed to fit the 2020-2024 Buick Encore GX.
The CURT 56541 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore GX, Chevrolet Trailblazer (Part #BKDK56541) fits 2020-2024 Buick Encore GX models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT 56541 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore GX, Chevrolet Trailblazer (Part #BKDK56541) fits the following vehicles: 2020-2024 Buick Encore GX; 2021-2026 Chevrolet Trailblazer. Always verify your specific year, make, and model before ordering.
The CURT 56541 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Buick Encore GX, Chevrolet Trailblazer (Part #BKDK56541) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Curt 56541 includes a custom wiring harness with a 4-flat connector, a dust cover for the connector, and all necessary hardware for installation. The harness is designed to connect to the vehicle's factory black tow plug connector located in the cargo area on the driver side near the threshold.
The Curt 56541 is designed for SUVs and Vans (S). Your vehicle must have a factory black tow plug connector in the cargo area on the driver side near the threshold. Consult your vehicle owner's manual or contact the vehicle manufacturer to confirm your vehicle has this connector before purchasing.
You will need a ratchet, a 10mm socket, a panel trim removal tool, and a test probe. These tools are required to disconnect the battery, remove the rear threshold plate, and test the harness after installation.
Yes, disconnecting the battery is required. Locate the vehicle's battery in the engine compartment on the driver side and disconnect the negative battery terminal. Fasten this wire down and away from the battery while completing the installation. Reconnect it only after all wiring is complete and tested.
After disconnecting the negative battery terminal, fasten the wire down and away from the battery to prevent accidental reconnection or contact with the positive terminal during installation.
The Curt 56541 has the following electrical ratings: Signal circuits are rated at 7.5 amps per side, and Tail/Running circuits are rated at 7.5 amps total. Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. Check your vehicle owner's manual or contact the vehicle manufacturer for your vehicle's specific lamp load rating.
The black tow plug connector is located in the cargo area on the driver side near the rear threshold plate. You will need to remove the rear threshold plate to access it. The connector is where you will insert the custom wiring harness.
1. Disconnect the negative battery terminal and fasten it away from the battery. 2. Open the rear hatch and remove all floor coverings. 3. Using a panel trim tool, carefully pull up the rear threshold plate. 4. Locate the black tow plug connector in the cargo area on the driver side near the threshold. 5. Insert the custom wiring end into the connector, ensuring it is fully inserted with locking tabs in place. 6. Reinstall the threshold and floor coverings. 7. Reconnect the negative battery terminal and install the provided 4-flat dust cover.
When not in use, roll up the 4-flat and store it in a convenient, out-of-the-way location inside the rear hatch, under the floor covering. This protects the connector from damage and keeps it organized.
When in use, route the 4-flat to the center of the vehicle and out of the rear hatch. Be careful to avoid routing it through any pinch points between the hatch door and the vehicle, and stay clear of the hatch lock mechanism to prevent damage to the connector.
The locking tabs secure the custom wiring harness to the factory tow plug connector. When you insert the custom wiring end, push it in fully until you hear or feel the locking tabs engage. This ensures a secure, reliable connection.
After reconnecting the negative battery terminal, verify that the harness is functioning by attaching the battery and testing with a test light, 4-flat tester, or a functioning trailer. This confirms that all connections are correct and the product is working properly before use.
Periodic inspection of all wires and connections should be performed to ensure there is no visible damage or loose connections. The manual does not specify an inspection interval, so consult your vehicle owner's manual or contact Curt Manufacturing for recommended maintenance schedules.
The provided 4-flat dust cover helps prevent corrosion of the connector when it is not in use. Install it after reconnecting the battery to protect the connector from moisture and environmental damage.
Laying tools across the positive battery terminal (typically noted with red covers or a red '+' symbol) can cause a ground short, leading to sparks and/or electrical shocks. Keep tools clear of the positive terminal during installation to prevent injury and damage.
The Curt 56541 is designed for SUVs and Vans (S) with a factory black tow plug connector in the cargo area on the driver side near the threshold. Confirm your vehicle has this connector before purchasing.
You need a ratchet, 10mm socket, panel trim removal tool, and test probe. No drilling or welding is required.
Yes, you must disconnect the negative battery terminal before installation and reconnect it only after testing the harness.
Signal circuits: 7.5 amps per side. Tail/Running circuits: 7.5 amps total. Do not exceed the product rating or your vehicle's lamp load rating, whichever is lower.
When in use, route the 4-flat to the center of the vehicle and out of the rear hatch. Avoid pinch points between the hatch door and vehicle, and stay clear of the hatch lock mechanism. When not in use, store it rolled up under the floor covering.





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