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 WarningRestraint System
Note: If the vehicle has been in a collision, refer to Repairs and
Inspections Required After a Collision for additional information.
Vehicle has front and rear seat belts that are the primary means of occupant
restraint. Seat belts help to keep the occupants inside the
passenger compartment a ...
Paint Gauges
Paint thickness gauge. measure the total thickness of the vehicle finish. It
is important to accurately measure the thickness of the finish on
each vehicle as the thickness of the finish will vary on each vehicle. Use a
paint gauge before the sanding process in order to accurately
measure how ...
Vehicle Data Recording and Privacy
The vehicle has a number of computers that record information about the vehicle’s
performance and how it is driven. For example, the vehicle uses computer modules
to monitor and control engine and transmission performance, to monitor the conditions
for airbag deployment and deploy them in a cr ...