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Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningAccident With Side Air Bag Module Deployment - Component Replacement and
Inspections
After a collision involving left/right side air bag module deployment,
replace the following components.
Left/right inflatable restraint side impact sensors on the side of the
impact.
Left/right inflatable restraint roof rail module on the side of the
impact.
Inflatable restraint sen ...
Front Suspension Description and Operation
The front suspension has 2 primary purposes:
Isolate the driver from irregularities in the road surface.
Define the ride and handling characteristics of the vehicle.
The front suspension absorbs the impact of the tires travelling over
irregular road surfaces and dissipates this energy thr ...
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling
and Enabling.
Disconnect the negative battery cable. Refer to ...