2007 Chevrolet Colorado Owner's Manual - Page 107

To engage the security locks, do the following: 1. Open one of the rear doors. 2. Using your ignition key, turn the lock to the horizontal position. 3. Close the door. 4. Repeat these steps on the other rear door. If you want to open a rear door when the security lock is on, unlock the door and open the door from the outside. To disengage the security locks, do the following: 1. Open one of the rear doors. 2. Using your ignition key, turn the lock to the vertical position. 3. Close the door. 4. Repeat these steps on the other rear door. Lockout Protection If you have power door locks, this feature protects you from locking your key in the vehicle when the key is in the ignition and a door is open. If the power door lock switch is pressed when a door is open and the key is in the ignition, all of the doors will lock and then the driver's door will unlock. Rear Doors (Extended Cab) To open a rear door, open the front door. Then, use the handle located on the front edge of the rear door panel to open it. You must close the rear door before closing the front door. 107