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 WarningInstallation Procedure
Drill 8 mm (5/16 in) for plug welding along the edges of the body side
outer lower panel as noted from the original panel.
Note: If the location of the original plug weld holes can not be
determined, space the plug weld holes every 40 mm (1½ in).
Clean and prepare the attac ...
Driver or Passenger Seat Side Inflatable Restraint Module Replacement
Warning: Refer to SIR Inflator Module Handling and Storage Warning
in the Preface section.
Warning: Following the deployment of a side impact air bag, inspect the
following parts for damage. Replace these parts if
necessary:
The seat cushion frame
The seat recliner, if equipped
T ...
Steering
Electric Power Steering
The vehicle has electric power steering. It does not have power steering fluid.
Regular maintenance is not required.
If power steering assist is lost due to a system malfunction, the vehicle can
be steered, but may require increased effort. See your dealer if there is a ...