If your vehicle has power door locks, it will have this feature. If you press the power door lock switch when the key is in the ignition and any door is open, all the doors will lock and the driver's door will unlock.
Be sure to remove the key from the ignition when locking your vehicle.
The lockout protection can be overridden by pressing and holding the power door lock in the lock position for three seconds.
Chevrolet Cobalt Owners Manual. Rear Door Security Locks (Sedan)
Security Lock Label shown
The rear door security
locks are located on the
inside edge of each rear
door. You must open the
rear doors to access
them. The label showing
lock and unlock positions
is located near the lock.
To set the locks, do the following:
1. Insert the key into the secur ...