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 WarningRear Spring, Insulator, and Jounce Bumper Replacement
Rear Spring, Insulator, and Jounce Bumper Replacement
Callout
Component Name
Preliminary Procedure
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
1
Rear Spring
Proced ...
Air Conditioning O-Ring Seal Replacement
Removal Procedure
Disassemble the A/C refrigerant components. Refer to the appropriate
repair procedure
Note: Cap or tape the open A/C refrigerant components immediately
to prevent system contamination.
Cap or tape the A/C refrigerant components.
...
Air Cleaner Inlet Duct Replacement
Removal Procedure
Remove the right front wheelhouse liner. Refer to Front Wheelhouse Liner
Replacement.
Remove the upper intake air duct plastic fastener (1).
Pull the lower portion of the intake air duct outward to release the
duct from the rub ...