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 WarningAirbag System
The vehicle has the following airbags except where noted below:
A frontal airbag for the driver.
A frontal airbag for the front outboard passenger.
A knee airbag for the driver.
A knee airbag for the front outboard passenger.
A seat-mounted side impact airbag for the driver.
A seat-mou ...
Remote Lock, Unlock, Start
Select Remote Lock, Unlock, Start and the following may display:
Remote Unlock Feedback
Remote Lock Feedback
Remote Door Unlock
Remote Unlock Feedback
When on, the exterior lamps will flash when unlocking the vehicle with the RKE
transmitter.
Select On or Off.
Remote Lock Feedback
T ...
Cargo Center Courtesy Lamp Bulb Replacement (Sedan)
Cargo Center Courtesy Lamp Bulb Replacement
Callout
Component Name
1
Rear Compartment Courtesy Lamp
Refer to Rear Compartment Courtesy Lamp Replacement
2
Cargo Lamp Bulb
...