2006 GMC Yukon Owner's Manual - Page 417

Notice: If you leave your radio or other accessories on during the jump starting procedure, they could be damaged. The repairs would not be covered by your warranty. Always turn off your radio and other accessories when jump starting your vehicle. 3. Turn off the ignition on both vehicles. Unplug unnecessary accessories plugged into the cigarette lighter or the accessory power outlets. Turn off the radio and all the lamps that are not needed. This will avoid sparks and help save both batteries. And it could save the radio! 4. Open the hood on the other vehicle and locate the positive (+) and negative (−) terminal locations on that vehicle. Your vehicle has a remote positive (+) jump starting terminal and a remote negative (−) jump starting terminal. You should always use these remote terminals instead of the terminals on the battery. The remote positive (+) terminal is located behind a red plastic cover, if equipped, near the engine accessory drive bracket. To uncover the remote positive (+) terminal, open the red plastic cover, if equipped. The remote negative (−) terminal is located on the engine drive bracket, or on the thermostat housing on the 8.1L engine. It is marked GND (Ground). See Engine Compartment Overview on page 5-12 for more information on the location of the remote positive (+) and remote negative (−) terminals. {CAUTION: An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 5-43