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Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningAluminum Wheel Refinishing
Finish Damage Evaluation Procedure
Note:
If the wheels are chrome-plated, do not re-plate or refinish the
wheels.
If the wheels are polished aluminum, do not refinish the wheels in
the dealer environment. Utilize a refinisher that meets
manufacturer guidelines.
Inspect the wheel ...
Exit Lighting
The headlamps, taillamps, parking lamps, back-up lamps, and license plate lamps
come on at night, or in areas with limited lighting, when the key is removed from
the ignition.
The dome lamps also come on when the key is removed from the ignition. The exterior
lights and dome lamps remain on a ...
Ignition Positions (Key Access)
The ignition switch has four different positions.
Notice: Using a tool to force the key to turn in the ignition could
cause damage to the switch or break the key. Use the correct key, make sure it is
all the way in, and turn it only with your hand.
If the key cannot be turned by hand, see yo ...