If your vehicle has power locks, it has a programmable automatic door unlock feature.
The doors can be programmed through the Driver Information Center (DIC) to automatically unlock several ways. See DIC Vehicle Personalization for more information.
Chevrolet Cobalt Owners Manual. Starting the Engine
Place the transmission in the proper gear.
Automatic Transmission
Move the shift lever to P (Park) or N (Neutral).
The engine will not start in any other position.
To restart the vehicle when it is already moving,
use N (Neutral) only.
Notice: Do not try to shift to P (Park) if the vehicle
is ...