2002 GMC Yukon Owner's Manual - Page 283

Four Wire Trailer Harness Adapter If you need to tow a light-duty trailer with a standard four-way round pin connector, an adapter connector is included with your vehicle. Connect the adapter with the tab (arrow) pointing toward the top. The cap on the wiring harness will lock onto the tab (arrow) and help hold the adapter in place. NOTICE: Using a power winch with the transmission in gear may damage the transmission. When operating a power winch, always leave the transmission in NEUTRAL (N). Use the regular brakes, set the parking brake, or block the wheels to keep your vehicle from rolling. Step-Bumper Pad Your vehicle has a rear step bumper, it is equipped with a rear step pad at the center of the bumper. Power Winches If you wish to use a power winch on your vehicle, only use it when your vehicle is stationary or anchored. If you will be using the bumper to tow a trailer, you must remove the center cutout circle to install the trailer ball. 4-72