2007 GMC Envoy Owner's Manual - Page 202

Passenger Airbag Status Indicator Your vehicle has the passenger sensing system. Your rearview mirror has a passenger airbag status indicator. When the ignition key is turned to RUN or START, the passenger airbag status indicator will light ON and OFF, or the symbol for on and off, for several seconds as a system check. Then, after several more seconds, the status indicator will light either ON or OFF, or either the on or off symbol to let you know the status of the right front passenger's frontal airbag. If the word ON or the on symbol is lit on the passenger airbag status indicator, it means that the right front passenger's frontal airbag is enabled (may inflate). United States Canada 202