Chevrolet 2010 Impala Owner's Manual page 161

The vehicle has three 12 volt outlets which can be
used to plug in electrical equipment, such as a cellular
telephone.
On vehicles with a center console, one outlet is located
inside the center floor console and two outlets are
located at the front of the console bin under the
instrument panel. Lift the cover to access the outlet.
Close the cover when not using the outlet.
On vehicles without a center console, two are located
under the climate controls and another outlet for the
rear seat passengers is at the rear of the center front
seat. Remove the cover to access the outlets. When
not using the outlet, make sure the cover is closed.
Certain accessory plugs may not be compatible to
the accessory power outlet and could result in blown
vehicle and adapter fuses. If you experience a problem,
see your dealer for additional information on the power
accessory plugs.
When adding electrical equipment, be sure to follow
the proper installation instructions included with the
equipment. Check with your dealer before adding
electrical equipment, and never use anything that
exceeds the maximum amperage rating of 20 amps.
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