Chevrolet 2007 Avalanche Owner's Manual page 76

If your vehicle has a roof-mounted rollover airbag
for the driver and the person seated directly
behind the driver, it is located in the ceiling
above the side windows.
76
If your vehicle has a roof-mounted rollover airbag
for the right front passenger and the person
directly behind that passenger, it is located in
the ceiling above the side windows.
I n f o r ma t i o n P r o v i d e d b y :