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 WarningWireless Communication Interface Antenna Replacement
Wireless Communication Interface Antenna Replacement
Callout
Component Name
Preliminary Procedure
Remove the communication interface module. Refer to
Communication Interface Module Replacement
1
...
Brake Fluid Effects on Paint and Electrical Components Caution
Caution: Avoid spilling brake fluid onto painted surfaces, electrical
connections, wiring, or cables. Brake fluid will damage painted surfaces and
cause corrosion to electrical components. If any brake fluid comes in contact
with painted surfaces, immediately flush the area with water. I ...
Front Seat Belt Anchor Plate Tensioner Replacement
Front Seat Belt Anchor Plate Tensioner Replacement
Callout
Component Name
Warning: Refer to SIR Warning.
Warning: In order to prevent accidental deployment and the
risk of personal injury, do not dispose of a ...