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 WarningPrevailing Torque Fasteners
Prevailing torque fasteners create a thread interface between the fastener
and the fastener counterpart in order to prevent the fastener
from loosening.
All Metal Prevailing Torque Fasteners
These fasteners accomplish the thread interface by a designed distortion or
deformation in the fastene ...
Installation Procedure
Cut the front hinge pillar body in corresponding locations to fit the
remaining original panel. The sectioning joint should be trimmed
to allow a gap of one-and-one-half-times the metal thickness at the
sectioning joint.
Create a 50 mm (2 in) backing plate from the unused portion of ...
USB
Playing from a USB
A USB mass storage or Certified Windows Vista®/Media Transfer Protocol (MTP)
device can be connected to the USB port.
The USB port is in the center console.
The USB icon displays when the USB device is connected.
USB Media Formats
The USB port will support the following med ...