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 WarningDoors
Trunk
WARNING
Exhaust gases can enter the vehicle if it is driven with the liftgate, trunk/hatch
open, or with any objects that pass through the seal between the body and the trunk/hatch
or liftgate. Engine exhaust contains carbon monoxide (CO) which cannot be seen or
smelled. It can cause u ...
Symbols
The vehicle has components and labels that use symbols instead of text. Symbols
are shown along with the text describing the operation or information relating to
a specific component, control, message, gauge, or indicator.
: This symbol is shown when you need
to see your owner manual for addi ...
Air Vents
Adjustable air vents are in the center and on the side of the instrument panel.
Move the slats (1) to change the direction of the airflow.
Use the thumbwheels (2) near the air vents to open or close off the airflow.
Additional air vents are located beneath the windshield, driver and passenger
...