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 WarningInstallation Procedure
Drill 8 mm (5/16 in) for plug welding along the edges of the tail lamp
pocket as noted from the original panel.
Note:
Clean and prepare the attaching surfaces for welding.
Position the tail lamp pocket on the vehicle.
Verify the fit of the tail lamp pocket.
Clamp ...
Infants and Young Children
Everyone in a vehicle needs protection! This includes infants and all other children.
Neither the distance traveled nor the age and size of the traveler changes the need,
for everyone, to use safety restraints. In fact, the law in every state in the United
States and in every Canadian province ...
Air Conditioning Condenser Replacement (1.6L LDE, LXT, LXV, and 1.8L 2H0)
Removal Procedure
Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
Disconnect battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove front bumper fascia. Refer to Front Bumper Fascia Replacement.
Remove air intake duct ...