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 WarningInstallation Procedure
Create 5 x 18 mm (4/16 x 11/16 in) slots for MIG-Brazing along the edges
of the front wheelhouse front panel as noted from the
original panel.
Create a 5 x 18 mm (4/16 x 11/16 in) slot for MIG-Brazing where front
wheelhouse front panel and front wheelhouse overlap.
C ...
Auxiliary Devices
If equipped, the AUX inputs are in the center console and allows portable devices
to connect to the vehicle using the 3.5 mm(1/8 in) auxiliary jack or USB port.
3.5mm Jack
Connect a 3.5mm (1/8 in) cable to the auxiliary input jack to use a portable
audio player.
Playback of an audio device th ...
Front Suspension Description and Operation
The front suspension has 2 primary purposes:
Isolate the driver from irregularities in the road surface.
Define the ride and handling characteristics of the vehicle.
The front suspension absorbs the impact of the tires travelling over
irregular road surfaces and dissipates this energy thr ...