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 WarningNew Vehicle Break-In Starting System
Caution:The vehicle does not need an elaborate break-in. But it will perform better in thelong 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 vehicle.Avoi ...