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 WarningDaytime Running Lamps (DRL)
Daytime Running Lamps can make it easier for others to see the front of your
vehicle during the day. Fully functional daytime running lamps are required on all
vehicles first sold in Canada.
A light sensor on top of the instrument panel makes the DRL work, so be sure
it is not covered.
The D ...
Hood Replacement
Warning: When a hood hold open device is being removed or installed,
provide alternate support to avoid the possibility of
damage to the vehicle or personal injury.
Preliminary Procedure
Remove the windshield washer nozzle hose. Refer to Windshield Washer Nozzle
Hose Replacement.
Hood ...
Additional Maintenance and Care
Your vehicle is an important investment and caring for it properly may help to
avoid future costly repairs. To maintain vehicle performance, additional maintenance
services may be required. It is recommended that your dealer perform these services
— their trained dealer technicians know your v ...