The lamps inside the vehicle will go on when any door is opened. These lamps fade out about 20 seconds after all of the doors have been closed or when the ignition is turned to ON/RUN. These lamps will also go on when pressing the trunk release, unlock symbol, or the horn symbol button on the Remote Keyless Entry System (RKE) Transmitter.
After the key is removed from the ignition, the lamps inside the vehicle stay on for about 20 seconds to provide an illuminated exit.
Chevrolet Cobalt Owners Manual. Parking Brake
Automatic Shown, Manual Similar
The parking brake lever is located between the
front seats.
For vehicles equipped with an armrest, lift the console
armrest in order to access the parking brake lever.
To set the parking brake, hold the brake pedal down
and pull up on the parking brake lever. ...