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 WarningRemoval Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Collision Sectioning Warning in the Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR
...
Air Conditioning Evaporator Hose Assembly Replacement
Preliminary Procedures
Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
Remove the headlamp - right side. Refer to Headlamp Replacement.
Loosen power steering fluid reservoir screw.
Remove brake pipes from the dash lower extension panel.
Remove engine mount. Ref ...
Tail Lamp Replacement
Preliminary Procedures
Open and support the rear compartment
lid.
Remove the body side trim panel replacement in order to expose the tail
lamp pocket nuts. Refer to Body Side Trim Panel
Replacement - Left Side.
Tail Lamp Bolt (Qty: 2)
Caution: Refer to Fastener Caut ...