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 WarningPower Windows
WARNING
Children could be seriously injured or killed if caught in the path of a closing
window. Never leave keys in a vehicle with children. When there are children in
the rear seat, use the window lockout button to prevent operation of the windows.
Press the switch down to open the window. ...
Replacing LATCH System Parts After a Crash
WARNING
A crash can damage the LATCH system in the vehicle. A damaged LATCH system
may not properly secure the child restraint, resulting in serious injury or even
death in a crash. To help make sure the LATCH system is working properly after a
crash, see your dealer to have the system inspec ...
Instrument Panel Outer Air Outlet Duct Replacement
Preliminary Procedure
Remove instrument panel assembly. Refer to Instrument Panel Assembly
Replacement.
Instrument Panel Outer Air Outlet Duct Screw (Qty: 7)
Caution: Refer to Fastener Caution in the Preface section.
Tighten
2.5 N·m (22 lb in)
Instrument Panel Outer Air Outlet Duct
Floo ...