For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningHeadlamp High/Low-Beam Changer
(Headlamp High/Low-Beam Changer):
Push the turn signal lever away from you and release to turn the high beams on.
To return to low beams, push the lever again or pull it toward you and release.
This indicator light turns on in the instrument cluster when the high-beam headlamps
are on. ...
Power Outlets
The accessory power outlets can be used to plug in electrical equipment, such
as a cell phone or MP3 player.
There is one accessory power outlet located on the center floor console and one
on the rear of the center floor console. These outlets are powered when the key
is in ON/ RUN or ACC/ACC ...
Installation Procedure
Install NEW stabilizer shaft insulators (1) to stabilizer shaft (2) so
that the slit in the insulator is facing the rear of the vehicle.
Install the insulator c 2. lamp to the insulator:
2.1. Position the clamp (2) over on the insulator.
2.2. Use two M8 bolts (1, 3) with 40 ...