Tekonsha Brake Control Wiring Adapter for GM Trucks & SUVs — Black, Plug-and-Play 4‑Pin

The Tekonsha 3015-P is a vehicle-specific plug-and-play wiring adapter that connects any Tekonsha brake controller to select GM trucks and SUVs without cutting or splicing.

This custom wiring harness was engineered to simplify trailer brake controller installation for 2003–2007 GM vehicles. One end plugs into the factory vehicle port while the other mates with the back of your Tekonsha controller, delivering a neat, secure connection and eliminating the need for modifications to factory wiring. The harness bundles four copper conductors inside braided nylon protection for durability and to resist abrasion and heat.

How does the 3015-P make installation faster?

Installation is reduced to two quick plug connections — one to your vehicle’s OEM port and one to the Tekonsha controller. No wire cutting, splicing, soldering, or electrical tape is required, which minimizes installation time and potential wiring mistakes.

• Pre-terminated four-pin connectors match vehicle and controller ports.
• Includes vehicle-specific pinout for GM models listed.
• Sufficient cable length to route between dash and vehicle harness without strain.

Is this harness durable enough for towing conditions?

The 3015-P uses four copper wires wrapped in a braided nylon sleeve, giving it a factory-finish look while protecting conductors from nicks, abrasion, and elevated temperatures. That protective covering helps maintain reliable electrical contact over time under typical towing stress and vibration.

• Copper conductors for consistent electrical flow.
• Braided nylon jacket resists punctures and wear.
• Strain-free design prevents connector damage during use.

Which vehicles are compatible with this Tekonsha harness?

The 3015-P is built for a range of GM full-size trucks and SUVs from the early-to-mid 2000s. It’s intended to fit the factory brake controller port locations and wiring configurations used on those specific model years.

• 2003–2006 Cadillac Escalade, Escalade ESV, Escalade EXT.
• 2003–2006 Chevrolet Avalanche 1500/2500.
• 2003–2007 Chevrolet Silverado 1500/1500 HD and 2500 HD/3500; 2003–2004 Silverado 2500.
• Designed to mate directly with Tekonsha controllers compatible with four-pin plug.

Will this wiring harness work with any type of Tekonsha brake controller?

Yes — the 3015-P is compatible with Tekonsha controllers that accept the four-pin plug. It supports both proportional and time-based controllers, making it a flexible option when upgrading or replacing your brake controller.

• Fits any Tekonsha unit with the matching four-pin socket.
• Supports proportional and time-delayed activation types.
• Preserves vehicle wiring integrity for easy dealer or future service.

Who is this for? The Tekonsha 3015-P harness is ideal for owners of the listed 2003–2007 GM trucks and SUVs who want a clean, reliable way to connect a Tekonsha brake controller without modifying factory wiring. It’s also a strong choice for mechanics, fleet managers, and trailer owners who prefer fast, repeatable installations and durable, service-friendly connections. This harness keeps installations tidy, reduces installation errors, and preserves OEM wiring, so you can tow with greater confidence.