Chevrolet Malibu 2005 Owner's Manual page 70

If your vehicle has a seat-mounted side impact airbag
for the right front passenger, it is in the side of the
passenger's seatback closest to the door.
1-64
If your vehicle has a roof-mounted side impact airbag
for the driver and the person seated directly behind the
driver, it is in the ceiling above the side windows.