1999 Pontiac Grand Prix Owner's Manual - Page 64

yellowblue Door Locks CAUTION: Unlocked doors can be dangerous. Passengers -- especially children -- can easily open the doors and fall out. When a door is locked, the inside handle won't open it. Outsiders can easily enter through an unlocked door when you slow down or stop your vehicle. This may not be so obvious: You increase the chance of being thrown out of the vehicle in a crash if the doors aren't locked. Wear safety belts properly, lock your doors, and you will be far better off whenever you drive your vehicle. There are several ways to lock and unlock your vehicle. To unlock either front door from outside the vehicle with your key, insert it fully into the door key cylinder and turn it counterclockwise. You can lock either front door from outside the vehicle with your key by inserting it fully into the door key cylinder and turning it clockwise. To unlock either front or rear door from inside the vehicle, push the lock lever back. To lock either front or rear door from inside the vehicle, push the lock lever forward. 2-4