2021 Trailblazer Trailer Wiring Harness | 4-Way Flat Connection | Harness with grommet

Prepare your Trailblazer for towing with this Trailer Wiring Harness from Chevrolet. This Genuine Chevrolet Accessories trailering harness is designed specifically for Trailblazer models with Factory Option Code V92 (Trailering Provisions). This trailering harness with grommet connects electrical power between Trailblazer and trailer which enables the trailer to receive brake and signal functions. This wiring harness connects to the trailer inline bundle (harness) located in the rear truck compartment of the Trailblazer on the driver-side, under the lift gate door sill. The trailer harness grommet helps reseal the factory body hole and the 4-Way connector mounts to the hitch bracket. The Trailering Provisions Option (V92) may be limited to LS (WITH AWD), 3LT, RS and Activ models, check your vehicle to confirm. This Genuine Chevrolet Accessories Trailer Wiring Harness is designed to function with the Trailering Hitch Package and Trailer Hitch Trim Bezel for your model.


  • Designed and Engineered by Chevrolet
  • Genuine Chevrolet Accessories provide Factory Fit, Finish and Function
  • Provides electrical power between Trailblazer and trailer
  • Allows trailer to use brake and signal functions
  • 4-Way connector mounts to the hitch bracket
  • Harness includes grommet designed to reseal the factory body hole
  • Works with Trailering Hitch Package and Trailer Hitch Trim Bezel for your model

Trailblazer Trailer Wiring Harness | 4-Way Flat Connection

This product and other Electrical Accessories (Navigation Radios, Tire Pressure Monitor Sensors, Remote Start Systems, Rear Seat Entertainment, etc.) including products which include an authorization code for a Vehicle Configuration Index (VCI) or Vehicle Emissions Control Information (VECI) Label CANNOT be returned once the box has been opened (including cut box, broken seal or package tape).
  • Part Number: 42736371
  • Brand: Genuine GM

$50.00 $38.00

Price Valid Till: 07-31-2024