Passenger Sensing System - GMC 2005 Sierra 1500 Pickup Owner's Manual

United States
To turn the right front passenger's airbag on again,
insert your ignition key into the switch, push in,
and move the switch to the on position.

Passenger Sensing System

If your rearview mirror has one of the indicators pictured
in the following illustrations, your vehicle has a passenger
sensing system. The indicator will be visible when you
turn your ignition key to RUN or START. The words ON
and OFF or the symbol for on and off, will be visible on
the rearview mirror during the system check. When the
system check is complete, either the word ON or the word
OFF, or the symbol for on or the symbol for off will be
visible. See Passenger Airbag Status Indicator on
1-76
page 3-36. If your rearview mirror does not have either of
the indicators pictured below, then your vehicle does not
have the passenger sensing system.
Passenger Airbag Status Indicator – United States
Canada
The passenger sensing system will turn off the right
front passenger's frontal airbag under certain conditions.
The driver's airbag is not part of the passenger
sensing system.
Passenger Airbag Status Indicator Canada