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.
Chevrolet Cobalt Service & Repair Manual. EGR Functional Tests
Fuel Injected Gasoline Engine
The EGR systems used on fuel injected
engines are controlled by the ECM. The ECM will store a code in memory when
the EGR system malfunctions. Refer to appropriate "Diagnostic Code Identification
Chart" for code number.
Linear EGR Val ...