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Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningOverlap/Backing Plate Sectioning (Welding)
Warning: Refer to Approved Equipment for Collision Repair Warning in
the Preface section.
Fit the service panel to the vehicle to ensure a proper fit.
Measure and mark a line at the sail panel 120 mm (4 3/4 in) from the
back glass opening and 70 mm (2 3/4 in) rearward from the ...
Immobilizer Operation
This vehicle has a passive theft-deterrent system.
The system does not have to be manually armed or disarmed.
The vehicle is automatically immobilized when the key is removed from the ignition.
The system is automatically disarmed when the vehicle is started with the correct
key. The key uses a ...
Deployment Outside Vehicle - Steering Wheel Module, Instrument Panel
Module, and Roof Rail Module
Deploy the inflator module outside of the vehicle when the vehicle will be
returned to service. Situations that require deployment outside
of the vehicle include the following:
Using the SIR diagnostics, you determine that the inflator module is
malfunctioning
The inflator module is cosm ...