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 WarningExterior Windnoise
Warning: Refer to Assistant Driving Warning in the Preface section.
Exterior windnoise is louder when the vehicle is driven with one or more
windows down. Exterior windnoise occurs when air passes over
the body panels, the seams, or the openings. Use the following items during the
test drive i ...
Ashtrays
For vehicles with a removable ashtray, the ashtray can be placed into the front
console cupholders.
To open the ashtray, lift the lid of the ashtray. After using, close the lid.
To empty the ashtray for cleaning, slightly turn the upper part of the ashtray
counterclockwise and remove it.
Noti ...
Keys
WARNING
Leaving children in a vehicle with the ignition key is dangerous and children
or others could be seriously injured or killed. They could operate the power windows
or other controls or make the vehicle move. The windows will function with the keys
in the ignition, and children or other ...