2003 GMC Sonoma Owner's Manual - Page 144

Battery Rundown Protection This feature shuts off the dome, courtesy, vanity, reading, glove box, cargo and underhood lamps if they are left on for more than minutes when the ignition 20 is off. This will keep your battery from running down. If the battery rundown protection shuts off the interior lamps, it may be necessary to do one of the following to return it to normal operation: Shut off all lamps and close all doors, or turn the ignition key to RUN. Accessory Power Outlets Your vehicle may be equipped with an accessory power outlet. With accessory power outlets you can plug in auxiliary electrical equipment such as a cellular telephone or CB radio. There may be an accessory power outlet located near the center of the vehicle on the lower part of the instrument panel. A small cap must be pulled down to access an accessory power outlet. When not using an outlet be sure to cover it with the protective cap. Notice: When using an accessory power outlet, maximum electrical load must not exceed 20 amps. Always turn off any electrical equipment when not in use. Leaving electrical equipment on for extended periods will drain your battery. 3-1 7