2001 GMC Yukon Owner's Manual - Page 265

2001 GMC Yukon Manual

Page 265 highlights

Trailer Wiring Harness Your vehicle is equipped with the following wiring harnesses for towing a trailer. Basic Trailer Wiring Package The seven-wire harness contains the following trailer circuits: D D D D D D D Yellow: Left Stop/Turn Signal Dark Green: Right Stop/Turn Signal Brown: Taillamps White: Ground Light Green: Back-up Lamps Red: Battery Feed Dark Blue: Trailer Brake If you need to upgrade your vehicle to heavy-duty trailering, a brake controller harness is available from your dealer. The trailer wiring harness, with a seven-pin connector, is located at the rear of the vehicle and is tied to the vehicle's frame. The harness connector can be plugged into a seven-pin universal heavy-duty trailer connector available through your dealer. 4-62

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