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Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningRear Window Defogger Description and Operation
Rear Window Defogger System Components
The rear window defogger system consists of the following components:
HVAC Control Module
HVAC Control Head
Rear Window Defogger Relay
Rear Defogger Grid
F28UA 40A Fuse
Rear Window Defogger Operation
The rear defog control system utilizes a sin ...
Passenger Airbag Status Indicator
The vehicle has a passenger sensing system.
The instrument panel has a passenger airbag status indicator.
United States
Canada
When the vehicle is started, the passenger airbag status indicator will light
ON and OFF, or the symbol for on and off, for several seconds as a system check.
If ...
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 Bat ...