GMC Yukon 2012 Owner's Manual page 94

3-32 Seats and Restraints
The right front passenger frontal
airbag is in the instrument panel on
the passenger's side.
Driver Side Shown, Passenger
Side Similar
If the vehicle has seat mounted side
impact airbags for the driver and
right front passenger, they are in the
side of the seatbacks closest to
the door.
Driver Side Shown, Passenger
Side Similar
The roof-rail airbags for the driver,
right front passenger, and second
row outboard passengers are in the
ceiling above the side windows.