2007 Hummer H3 Owner's Manual - Page 94

Programmable Automatic Door Locks If your vehicle has an automatic transmission, it is programmed from the factory to lock the doors automatically when the shift lever is moved out of PARK (P). All the doors will unlock when the shift lever is moved back into PARK (P). If your vehicle has a manual transmission, it is programmed from the factory to lock the doors automatically when the vehicle speed is greater than 15 mph (24 km/h). The doors will unlock when the key is removed from the ignition. To personalize the automatic door locks, see "Automatic Door Locks" under DIC Controls and Displays on page 192. Lockout Protection 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. A chime will sound to indicate that the key has been left in the ignition. 94