2008 GMC Acadia Owner's Manual - Page 168

The indicator light does not come on when the ignition is in LOCK/OFF or if no equipment is plugged into the outlet. If you try to connect equipment using more than 150 watts or a system fault is detected, a protection circuit shuts off the power supply and the indicator light turns off. To reset the circuit, unplug the item and plug it back in or turn the Remote Accessory Power (RAP) off and then back on. See Retained Accessory Power (RAP) on page 2-27. The power restarts when equipment using 150 watts or less is plugged into the outlet and a system fault is not detected. The power outlet is not designed for the following electrical equipment and may not work properly if these items are plugged into the power outlet: Climate Controls Climate Control System With this system you can control the heating, cooling, defrost, defog, and ventilation of the vehicle. • Equipment with high initial peak wattage such as: compressor-driven refrigerators and electric power tools. • Other equipment requiring an extremely stable power supply such as: microcomputer-controlled electric blankets, touch sensor lamps, etc. See High Voltage Devices and Wiring on page 5-99. Manual Operation 9(Fan): Turn the left knob clockwise or counterclockwise to increase or decrease the fan speed. Turn the knob all the way counterclockwise to turn the front system off. Temperature Control: Turn the center knob clockwise or counterclockwise to increase or decrease the temperature of the air flowing from the system. 3-26