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Trailer Wiring Harness

Trailer Wiring Harness

GM Part #42736371

MSRP$50.00*

Easily provide power to your trailer with a Chevrolet Accessories Trailer Wiring Harness.

  • Connects electrical power between tow vehicle and trailer
  • Allows trailer to use brake and signal functions
  • Allows you to tow RVs and trailers that meet the towing capacity for your vehicle

About this product

Easily provide power to your trailer with a Chevrolet Accessories Trailer Wiring Harness. It contains 4- and 7-way connections for optimal convenience.

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  • Connects electrical power between tow vehicle and trailer
  • Allows trailer to use brake and signal functions
  • Allows you to tow RVs and trailers that meet the towing capacity for your vehicle
  • Vehicle-specific style that blends seamlessly with your vehicle’s body and mechanical design
  • Enhances the functionality of your vehicle

Width5.62in
Weight.08lb
Height4.12in
Retainers IncludedNo
Wire Quantity1
Length42.75 in / 1085.84 mm
Connector GenderMale
Terminal GenderFemale
Connector Quantity2
Terminal TypePin,Butt

The greater of either the balance of the vehicle's bumper to bumper warranty or 12 months / 12,000 miles

ModelBody StyleTrimYear(s)
Trailblazer2021, 2022, 2023, 2024, 2025, 2026

Frequently Asked Questions

Yes, the brake controller is compatible with cruise control and adjusts pressure to the terrain/elevation of the trailer and tow vehicle.

Yes. Weight Carrying is where all of the tongue weight of the trailer is carried directly on the rear of the tow vehicle and on the hitch. Weight Distribution is determined by using a weight distributing hitch, and some or all of the tongue weight is evenly distributed throughout from the rear to the front of the tow vehicle.

No. Be sure to find the specific adapter to fit your trailering specifications.