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 WarningFloor Carpet Drying
If the carpet or the pad or insulator is wet, use the following criteria for
drying or for replacing the components:
For a 1-piece carpet assembly bonded to a cotton or a fiber padding,
replace the entire assembly
For a 2-piece carpet assembly with a cotton or a fiber padding, replace
...
Satellite Radio
SiriusXM® Satellite Radio
Vehicles with a valid SiriusXM satellite radio subscription can receive SiriusXM
programming.
SiriusXM satellite radio has a wide variety of programming and commercial-free
music, coast to coast, and in digital-quality sound.
See www.siriusxm.com or call 1-866-635- ...
Radio Reception
Frequency interference and static can occur during normal radio reception if
items such as phone chargers, vehicle convenience accessories, and external electronic
devices are plugged into the accessory power outlet. If there is interference or
static, unplug the item from the accessory power ...