2012 GMC Sierra Owner's Manual - Page 159

Instruments and Controls If, after several seconds, both status indicator lights remain on, or if there are no lights at all, there may be a problem with the lights or the airbag on-off switch. See your dealer for service. In addition, if the vehicle has a passenger sensing system for the right front passenger position, the label on the vehicle's sun visor refers to "ADVANCED AIRBAGS". 5-21 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 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 frontal airbag is enabled (may inflate). If the word OFF or the off symbol is lit on the airbag status indicator, it means that the passenger sensing system has turned off the right front passenger frontal airbag. Passenger Airbag Status Indicator If the vehicle has one of the indicators pictured in the following illustrations, then the vehicle has a passenger sensing system for the right front passenger position unless there is an airbag off switch located in the glove box. If there is an airbag off switch, the vehicle does not have a passenger system system. See Airbag On-Off Switch on page 3‑29. The passenger airbag status indicator is on the overhead console. See Passenger Sensing System on page 3‑32 for important safety information. United States Canada and Mexico When the vehicle is started, the passenger airbag status indicator will light ON and OFF, or the symbol