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 WarningWheel Stud Replacement
Removal Procedure
Raise and suitably support the vehicle. Refer to Lifting and
Jacking the Vehicle.
Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and
Installation.
Remove the wheel bearing/hub. Refer to Rear Wheel Bearing and Hub
Replacement.
Cauti ...
Accessories and Modifications
Adding non‐dealer accessories or making modifications to the vehicle can affect
vehicle performance and safety, including such things as airbags, braking, stability,
ride and handling, emissions systems, aerodynamics, durability, and electronic systems
like antilock brakes, traction cont ...
New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in. But it will
perform better in the long run if you follow these guidelines:
• Do not drive at any one constant speed, fast or slow, for the first 805 km (500
mi).
Do not make full-throttle starts. Avoid downshifting to brake or slow the v ...