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
Disable the SIR System. Refer to SIR Disabling and Enabling.
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove all related panels and components.
Visually inspect the damage. Repair as much of the damage as possible.
Remove the ...
Headlamp Replacement
Preliminary Procedure
Remove the front bumper fascia upper bracket. Refer to Front Bumper Fascia
Replacement.
Headlamp Screw (Qty: 4)
Caution: Refer to Fastener Caution in the Preface section.
Tip
Secure the headlamp fasteners in sequence, as indicated.
Tighten
2.5 N·m (22 lb in)
...
Front Brake Rotor Replacement
Special Tools
CH-41013 Rotor Resurfacing Kit
CH-42450-A Wheel Hub Resurfacing Kit
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Warning: Refer to Brake Dust Warning in the Preface section.
Raise and support the vehicle. Refer to Lifting and Jacking ...