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:

California Proposition 65 WarningRadio Replacement (Without US8)
Radio Replacement
Callout
Component Name
Preliminary Procedure
Remove the instrument panel center molding. Refer to
Instrument Panel Center Molding Replacement.
1
Radio Bolts (Qty: 4)
...
Instrument Panel Compartment Replacement
Instrument Panel Compartment Replacement
Callout
Component Name
Preliminary Procedure
Remove the right instrument panel upper trim panel. Refer to Instrument
Panel Upper Trim Panel Replacement - Right Side.
...
Hub/Axle Flange and Wheel Stud Runout Inspection
Special Tools
GE-8001 Dial Indicator Set , or equivalent
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Mark the location of the wheels to the wheel studs and mark the specific
vehicle position on each tire and wheel ?ELF, LR, RF, RR.
Remove the tire and w ...