2003 Chevrolet Express Van Owner's Manual - Page 94

Rear Door Security Locks Security locks are located on the passenger side rear door, the side sliding door or the front portion of the 60/40 side swing-out door. With this feature, you can lock these doors so they can't be opened from the inside by passengers. Right-hand 60/40 Swing-Out Side Door Move the button to the left to engage the security feature. Move the button to the right to return the door locks to normal operation. w Rear Cargo Door Move the lever down to engage the security feature. Move the lever up to return the door locks to normal operation. 2-9