To lock the driver door from outside the vehicle, turn the key clockwise. Turn it counterclockwise to unlock.
The Remote Keyless Entry (RKE) transmitter can also be used to lock or unlock the doors.
From the inside, use the manual lock knobs on each door or use the power door locks.
Power Door Locks

This vehicle may have power door locks.
The controls are located
on the driver and front
passenger door armrests.
: Press to unlock the
doors.
: Press to lock the doors.
For more information see:
- Door Locks.
- Power Door Locks.
- Remote Keyless Entry (RKE) System Operation.
Remote Vehicle Start
Trunk ReleaseChevrolet Cobalt Owners Manual. Antilock Brake System (ABS)
The vehicle might have the Antilock Brake System
(ABS), an advanced electronic braking system that
helps prevent a braking skid.
If the vehicle has ABS,
this warning light on the
instrument panel comes
on briefly when the
vehicle is started.
When the engine is started, or when the vehicle ...