Chevrolet Cobalt Owners Manual: Where Are the Airbags?

The driver's frontal airbag is in the middle of the steering wheel.

The right front passenger's airbag is in the instrument panel on the passenger's side.

Driver Side shown, Passenger Side similar

If your vehicle has roof-rail airbags for the driver, right front passenger, and second row outboard passengers, they are in the ceiling above the side windows.

WARNING:
If something is between an occupant and an airbag, the airbag might not inflate properly or it might force the object into that person causing severe injury or even death. The path of an inflating airbag must be kept clear. Do not put anything between an occupant and an airbag, and do not attach or put anything on the steering wheel hub or on or near any other airbag covering.

Never secure anything to the roof of a vehicle with roof-rail airbags by routing a rope or tie down through any door or window opening. If you do, the path of an inflating roof-rail airbag will be blocked.