CURT 55540 T-Connector (4-Way Flat) – Vehicle-Specific Trailer Wiring Harness for Chevy Express & GMC Savana

Overview

Tow-ready wiring starts with a reliable connection. The CURT 55540 T-Connector is a vehicle-specific, plug-and-play trailer wiring harness designed for select years of Chevy Express and GMC Savana vans. Instead of cutting or splicing, two OEM-friendly connections plug into the taillight assembly to deliver a standard 4-way flat trailer connector. This approach emphasizes a clean, secure electrical path for your towing setup, helping you stay focused on the road ahead.

What it is and how it helps

This harness supplies a universal 4-way flat socket and includes the necessary wiring components plus a dust cover to keep the connector clean when not in use. The result is a straightforward, durable wiring solution that’s built to perform in everyday tasks and occasional trips alike.

Key benefits at a glance

• Plug-and-play design that avoids cutting or splicing during installation
• Vehicle-specific connectors that align precisely with your taillight assembly
• 4-way flat output powers tail lights, brake lights, and turn signals
• Dust cover protects the connector when it isn’t in use
• Backed by a limited one-year warranty for added confidence

What you get

• Custom wiring harness configured for Chevy Express and GMC Savana models
• All required wiring components for a reliable trailer connection
• Dust cover and hardware to help keep the system protected

How installation works

The harness plugs directly into the vehicle’s taillight assembly, creating a 4-way flat socket that powers tail lights, brake lights, and turn signals. With a plug-and-play design, there’s no need for cutting or splicing, reducing wiring errors and installation time.

Compatibility and usage notes

Designed for certain years of Chevy Express and GMC Savana (verify fitment in the application info). This harness is ideal for towing setups requiring a simple, reliable 4-wire connection and is compatible with standard trailer lighting configurations.

Real-world scenarios

Imagine a weekend at the lake, a campsite setup, or a worksite delivery. With CURT’s wiring solution, you gain a clear, dependable link between vehicle and trailer lighting, helping you focus on your destination rather than the wiring details.

Why CURT

CURT combines durable materials with precise manufacturing to deliver towing components you can trust. The 55540 is designed for quick install, reliable performance, and long-lasting use, with a dust cover to protect connections in varying conditions.