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:

California Proposition 65 WarningDriver or Passenger Seat Cushion Frame Replacement
Driver or Passenger Seat Cushion Frame Replacement
Callout
Component Name
Preliminary Procedures
Remove the driver or passenger seat. Refer to Driver or Passenger
Seat Removal and Installation
Remove the front seat cushio ...
Liftgate Strut Replacement
Liftgate Strut Replacement
Callout
Component Name
1
Liftgate Strut
Warning: When a lift gate hold open device is being removed
or installed, provide alternate support to avoid the possibility of
damage ...
Generator Replacement (LUV)
Removal Procedure
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconnection and Connection.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the drive belt. Refer to Drive Belt Replacement.
Remove the drive bel ...