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 WarningWindshield Wiper Arm Replacement
Windshield Washer Arm Finish Cap
Tip
Use a small flat-bladed tool to remove finish cap.
Special Tools
BO-6626 Wiper Arm Puller
For equivalent regional tools, refer to Special Tools.
Windshield Washer Arm Nut
Caution: Refer to Fastener Caution in the Preface section.
Procedure
...
Rear Compartment Lid Emblem/Nameplate Replacement (LT or LTZ)
Rear Compartment Lid Emblem Assembly
Caution: Refer to Exterior Trim Emblem Removal Caution in the
Preface section.
Procedure
The part and surface should be 21°C (70°F) prior to installation. The
vehicle should remain 21°C (70°F) for
one hour after assembly to allow adhesive to deve ...
Front Fog Lamp Bulb Replacement
Preliminary Procedures
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
Disconnect the forward lamp electrical harness connector from the fog
lamp bulb socket.
Remove the Front Bumper Fascia Opening Lower Cover. Refer to Front
Bumper Fascia Opening Lowe ...