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2010 - 2016 Buick LaCrosse
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Complete CURT Class 2 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 2010 - 2016 Buick LaCrosse. 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 the next checkpoint is on your adventure -- whether it's getting your bike on the trail before sunrise or making it to the campground before dark -- CURT class 2 hitches let you Bring It with confidence. These receiver hitches are made to handle most light-duty towing applications and offer a custom fit for your vehicle. Typically used on full-size cars, crossovers, compact SUVs, minivans or even compact pickup trucks, a CURT class 2 trailer hitch complements the design of smaller vehicles. This particular class 2 hitch is made to be a custom hitch for certain years of the Buick LaCrosse, Buick Regal, Cadillac XTS, Chevy Impala, Chevy Malibu and Chevy Malibu Limited (to verify vehicle compatibility, see application info). It offers a weight carrying capacity of 3,500 lbs. GTW and 350 lbs. TW. Class 2 trailer hitches can typically be used to tow a variety of lightweight trailers, such as a small utility trailer, small fishing boat trailer or popup camper (NOTE: Never exceed the lowest weight capacity of any towing component). They are also perfect for adding cargo space to your vehicle with a bike rack or cargo carrier. This class 2 hitch features a 1-1/4" receiver tube to accept a ball mount shank or other hitch-mounted accessory. For safety, it is tested in accordance with SAE J684. A custom trailer hitch design requires extra care, and as such, CURT class 2 hitches are engineered using real vehicles and hands-on research. We use high-strength steel, robotic welding and rigorous testing to produce hitches that are built to fit your lifestyle. To ensure that each hitch will be a reliable extension of your vehicle, we also finish our hitches in a co-curing of liquid A-coat and black powder coat, giving them long-lasting rust and wear resistance.
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 Buick LaCrosse (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 |
|---|---|---|
| 2010 - 2016 | Buick LaCrosse | — |
Yes, the 10 - 16 Buick LaCrosse Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12115 (Part #CHW-204) is designed to fit the 2010-2016 Buick LaCrosse.
The 10 - 16 Buick LaCrosse Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12115 (Part #CHW-204) fits the following vehicles: 2010-2016 Buick LaCrosse. Always verify your specific year, make, and model before ordering.
The 10 - 16 Buick LaCrosse Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12115 (Part #CHW-204) fits 2010-2016 Buick LaCrosse models. The 2016 model year is the last year covered by this part number. For newer models, check for an updated version.
The 10 - 16 Buick LaCrosse Curt 1-1/4", Class 2 Trailer Tow Hitch + 4-flat Wiring Kit 12115 (Part #CHW-204) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, the Curt 12115 is designed for Chevrolet Impala sedans. However, the manual does not specify exact model years, so contact Curt technical support at 1-877-287-8634 to confirm your vehicle's year is covered.
Yes, the Curt 12115 is designed for Buick LaCrosse sedans. However, the manual does not specify exact model years, so contact Curt technical support at 1-877-287-8634 to confirm your vehicle's year is covered.
Yes, the Curt 12115 is designed for Cadillac XTS sedans. However, the manual does not specify exact model years, so contact Curt technical support at 1-877-287-8634 to confirm your vehicle's year is covered.
Yes, the Curt 12115 is designed for Buick Regal sedans. However, the manual does not specify exact model years, so contact Curt technical support at 1-877-287-8634 to confirm your vehicle's year is covered.
Yes, the Curt 12115 is designed for Chevrolet Malibu sedans. However, the manual does not specify exact model years, so contact Curt technical support at 1-877-287-8634 to confirm your vehicle's year is covered.
The Curt 12115 has a gross load capacity of 3500 lbs trailer weight and 350 lbs tongue weight when used as a weight-carrying hitch. However, you must not exceed your vehicle manufacturer's recommended towing capacity, which may be lower.
The hitch weight is 50 lbs.
The Curt 12115 is designed for use with Euro Mount #45571 (1 7/8" ball) and #45572 (2" ball), and with ball mount #D-225/45017.
Required tools are: power drill, 1/2" drill bit, torque wrench, ratchet, sockets (13mm and 3/4"), wire pipe brush, and aviation shears. Safety glasses must be worn at all times during installation.
Two people may be required to ease installation. If you are hesitant to undertake this task on your own, contact an authorized Curt installer for additional assistance.
The manual does not mention disconnecting the battery as part of the installation procedure.
Drilling is not required for all vehicles. However, on Buick LaCrosse (AWD) and Cadillac XTS models, you must enlarge the rearward hole in the suspension cross member to 1/2" using a 1/2" drill bit. On Impala models only, you must trim approximately a 1 1/4 inch deep notch from each side of the bottom bumper fascia.
Yes, on Impala models only, you must trim approximately a 1 1/4 inch deep notch from each side of the bottom bumper fascia. This trim is not required on Malibu, Regal, LaCrosse, or XTS models.
Hole enlargement is required only on Buick LaCrosse (AWD) and Cadillac XTS models. On these vehicles, enlarge the rearward hole in the suspension cross member to 1/2" using a 1/2" drill bit. This step is not required on Impala, Malibu, or Regal models, or on FWD LaCrosse models.
Torque the 1/2" bolt with handle nut to 75 lb-ft.
Torque all other 1/2" hardware (excluding the bolt with handle nut) to 110 lb-ft.
Torque all 8mm hardware to 23 lb-ft.
All non-trailer (wheel-less) loads applied to this product must be supported by 18050 stabilizing straps. Failure to properly support non-trailer loads will void the product warranty. Curt recommends the use of 18050 stabilizing straps for all non-trailer loads. See the Curt catalog or visit www.curtmfg.com for further information.
No. You must never exceed your vehicle manufacturer's recommended towing capacity. Although the Curt 12115 has a gross load capacity of 3500 lbs trailer weight and 350 lbs tongue weight, your vehicle's manufacturer may specify a lower limit, which you must follow.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. This should be done regularly throughout the life of the product.
The manual recommends periodically checking the receiver hitch to ensure that all fasteners are tight and that all structural components are sound, but does not specify an exact interval. Regular inspection is advised.
The kit includes: 5 serrated flange nuts (1/2-13 UNC, Grade 8), 4 car bolts (1/2-13 UNC, 1-1/2", Grade 8), 2 hex head cap screws (1/2-13 UNC, 1-1/2", Grade 8), 2 hex head cap screws (M8x1.25, 55mm, Class 10.9), 1 handle nut (1/2-13 UNC, Grade 8), 2 lock washers (1/2"), 2 conical toothed washers (3/8"), 2 hex nuts (M8x1.25, Class 10), 1 wedge spacer (1/2"), receiver tube section, center section, and two bolt-on brackets.
Before you begin installation, read all instructions thoroughly. Then, remove one 8mm bolt from the exhaust hanger bracket on each side of the vehicle, and clean the weldnut using a wire brush or spray lubricant. On Impala models only, trim approximately a 1 1/4 inch deep notch from each side of the bottom bumper fascia.
Raise the receiver tube section of the hitch into place and use the 8mm bolts and conical toothed washers provided to secure it into place. Secure the 8mm nut to the back side of the frame bracket on each side to hold the exhaust bracket in place.
Place the handle nut in the suspension housing and secure it with a 1/2" bolt and lock washer. Note: Bolt-on bracket (1) is used on FWD vehicles built before mid-year 2013. Bolt-on bracket (2) is used on all AWD and FWD models built mid-year 2013 to present.
Raise the center section of the hitch into place and loosely secure the five 1/2" hardware components that hold it into place. Then torque the 1/2" bolt with handle nut to 75 lb-ft, all other 1/2" hardware to 110 lb-ft, and torque all 8mm hardware to 23 lb-ft.
The Curt 12115 fits Chevrolet Impala and Malibu, Buick Regal and LaCrosse, and Cadillac XTS sedans. Confirm your vehicle's year with Curt technical support at 1-877-287-8634.
The Curt 12115 has a gross load capacity of 3500 lbs trailer weight and 350 lbs tongue weight. Do not exceed your vehicle manufacturer's recommended towing capacity.
You need a power drill, 1/2" drill bit, torque wrench, ratchet, 13mm and 3/4" sockets, wire pipe brush, aviation shears, and safety glasses.
Trimming is required on Impala models only (1 1/4" notch from each side of bumper fascia). Hole enlargement to 1/2" is required on Buick LaCrosse (AWD) and Cadillac XTS models only.
Torque the 1/2" bolt with handle nut to 75 lb-ft, all other 1/2" hardware to 110 lb-ft, and all 8mm hardware to 23 lb-ft.
Wear safety glasses during installation. All non-trailer loads must be supported by 18050 stabilizing straps. Never exceed your vehicle manufacturer's recommended towing capacity.
Periodically check that all fasteners are tight and all structural components are sound.
Yes, the Curt 56098 is designed for Buick LaCrosse passenger cars. The harness connects to the vehicle's taillight wiring and includes connectors that match the factory taillight housing connectors.
The Curt 56098 is a custom wiring harness that provides trailer lighting connections for a Buick LaCrosse. It taps into the vehicle's taillight circuits and includes a converter box to manage signal and running light circuits for trailer use.
You will need a Phillips screwdriver, flat blade screwdriver, and panel trim removal tool. These are the only tools required for installation.
The harness includes: custom wiring harness with yellow and green wire ends, white ground wire with ring terminal, black power wire, black converter box, provided screw for grounding, double-sided tape, cable ties, and a 4-flat dust cover.
The manual does not explicitly state whether the battery must be disconnected. However, since the installation involves working with the vehicle's electrical system and taillight connectors, it is recommended to consult the vehicle owner's manual or contact the vehicle manufacturer for safety guidance.
Open the tailgate and remove the scuff panel by pulling out at the bottom and then up. Remove the plastic fasteners securing the felt trunk liner on both sides. Remove the four plastic wing nuts securing each taillight assembly. The taillight assembly will then lift away to reveal the vehicle's taillight wiring harness connectors.
The custom wiring harness end with the yellow wire connects at the driver side taillight, and the end with the green wire connects at the passenger side taillight. Both ends insert between the separated vehicle taillight connectors, with the locking tabs fully engaged.
Insert the custom wiring harness end (yellow wire for driver side, green wire for passenger side) between the separated vehicle taillight connectors. Ensure the connectors are fully inserted and the locking tabs are in place. Take care not to damage the locking tabs during insertion.
Drilling may be required for the ground wire connection. You can either locate an existing screw with nut in the vehicle frame to secure the white ground wire's ring terminal, or drill a 3/32" pilot hole if no suitable existing fastener is available. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
The pilot hole size is 3/32". This hole is drilled only if no existing screw with nut is available in the vehicle frame near the taillight connector.
The battery connection must be fuse-protected with a maximum of 10 amps. Exceeding this rating can cause loss of warranty, overheating, and potential fire. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
Signal circuits are rated at 3.0 amps per side. Tail and running circuits are rated at 6.0 amps total. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower.
The black converter box should be adhered to a flat spot inside the vehicle near the taillight using the provided double-sided tape. The location should be convenient and secure.
When in use, route the 4-flat to the center of the vehicle and out of the trunk. When not in use, roll it up and store in a convenient, out-of-the-way location inside the trunk. Secure any loose wires with the provided cable ties.
Test for proper function by using a test light or by connecting a properly wired trailer. All installation steps must be followed to ensure the wiring harness functions properly.
The scuff panel is removed to access the taillight area. It should be reinstalled at the end of the installation (Step 10). When removing it, take care not to damage the alignment tabs on the back, as these are needed for proper reinstallation.
Yes, the plastic wing nuts that secure each taillight assembly should be reused. They are removed during installation to access the taillight connectors and must be reinstalled when reassembling the taillight housings.
Remove the plastic fasteners securing the felt trunk liner on both sides of the vehicle and pull the liner back to access the taillight assemblies. The liner should be reinstalled after the wiring harness installation is complete.
Before drilling the 3/32" pilot hole for the ground wire screw, check for miscellaneous items that may be hidden behind or under any surface. This precaution avoids damage to hidden components and personal injury.
The area where the white ground wire is secured should be free of rust, dirt, and paint. This ensures a proper electrical connection. The ring terminal should be secured using the provided screw to either an existing screw with nut in the vehicle frame or to a 3/32" pilot hole you drill.
Install the provided 4-flat dust cover on the connector to help prevent corrosion. This should be done during the final reassembly step.
Yes, the Curt 56098 is designed for Buick LaCrosse passenger cars.
You need a Phillips screwdriver, flat blade screwdriver, and panel trim removal tool.
Drilling may be required for the ground wire connection. You can use an existing screw in the vehicle frame or drill a 3/32" pilot hole if needed.
The battery connection must be fuse-protected at a maximum of 10 amps. Exceeding this can cause overheating and fire.
Test using a test light or by connecting a properly wired trailer to verify proper function.
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