2020-2025 Trailblazer Encore GX 4-Pin Trailer Hitch Wiring OEM

This is a Genuine OEM GM 4-Pin Trailer Hitch Wiring Harness (GM internal name: HARNESS ASM-TRLR WRG INSTALL) for the 2020–2025 Buick Encore GX and 2021–2025 Chevrolet Trailblazer. It provides a 4-way flat connector for trailer lighting including running lights, turn signals, and brake lights, and installs at the rear of the vehicle.

Genuine GM OEM accessory providing a direct, plug-and-play fit with no splicing or cutting of vehicle wiring required. Fits 1.2L and 1.3L turbocharged 3-cylinder engines across both models. This harness requires the vehicle to have been equipped with factory trailering provisions — on Encore GX models this means Factory Option Code V92 must be present, and on Trailblazer models an Active Towplug connector must already be installed; vehicles without these factory trailering provisions are not compatible.

Quick Part Facts

• Condition: New, Genuine OEM GM
• Position: Rear
• Type: 4-Pin / 4-Way Flat Trailer Hitch Wiring Harness
• Engines: 1.2L I3 Turbo, 1.3L I3 Turbo
• Plug-and-play installation — no splicing or cutting required
• Requires factory trailering provisions: Option Code V92 (Encore GX) or Active Towplug (Trailblazer)
• Color: Black

Fitment