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 WarningSeat Belt Latch Stop Installation
Preliminary Procedure
Locate the hole in the seat belt webbing where the original seat belt
stop button was located.
If the original hole in the seat belt webbing is not visible, perform
the following:
If either the right or left stop button is missing use the opposing seat
...
Global Positioning System (GPS)
The position of the vehicle is determined by using satellite signals, various
vehicle signals, and map data.
At times, other interference such as the satellite condition, road configuration,
condition of the vehicle, and/or other circumstances can affect the navigation system's
ability to ...
Rear Compartment Lid Hinge Torque Rod Replacement
Preliminary Procedure
Remove rear compartment lid. Refer to Rear Compartment Lid Replacement.
Special Tools
BO-125 Torque Rod Lifter
For equivalent regional tools, refer to Special Tools.
Rear Compartment Lid Hinge Torque Rod - Right Side
Tip
Only use the special tool to remove and i ...