GMC Sierra Owners Manual
Accessory power outlets can be used to plug in electrical equipment, such as a cell phone, MP3 player, etc.
The vehicle may have two accessory power outlets located below the climate control system, or may have one accessory power outlet and one cigarette lighter. The cigarette lighter is designed to fit only in the receptacle closest to the driver.
There may be another accessory power outlet in the rear cargo area.
If the vehicle has a floor console, there is an accessory power outlet inside the storage bin and one on the rear of the floor console.
Remove the cover to access and replace when not in use.
The accessory power outlets are powered, even when the ignition is in LOCK/OFF. Continuing to use power outlets while the ignition is in LOCK/OFF may cause the vehicle's battery to run down.
Power is always supplied to the outlets. Do not leave electrical equipment plugged in when the vehicle is not in use because the vehicle could catch fire and cause injury or death.
Notice: Leaving electrical equipment plugged in for an extended period of time while the vehicle is off will drain the battery. Always unplug electrical equipment when not in use and do not plug in equipment that exceeds the maximum 20 ampere rating.
Certain power accessory plugs may not be compatible to the accessory power outlet and could overload vehicle or adapter fuses. If a problem is experienced, see your dealer.
When adding electrical equipment, be sure to follow the proper installation instructions included with the equipment. See Add-On Electrical Equipment on page 9‑112.
Notice: Hanging heavy equipment from the power outlet can cause damage not covered by the vehicle warranty. The power outlets are designed for accessory power plugs only, such as cell phone charge cords.