1998 GMC Suburban Owner's Manual - Page 83

Y On the passenger side the of rear cargo door or tailgate, there is a power lock switch which can beused to lock or unlock allof the doors. I Child Security Locks(If Equipped) With this feature,you can lock the rear side doors so they can't be opened from the inside by passengers. LOCK c On vehicleswith cargo doors,if the rear cargo lock switch is pressed with the cargo doors open,of the all doors will lock five seconds after the cargo doors are closed. If the cargo doors are closed, the vehicle doors will lock when a power door lock switch is pressed. Move the button up to engage the security feature. Move the button down to return the door locks to normal operation. Leaving Your Vehicle If you are leaving the vehicle, take keys, openyour your door and set the locks from inside. Then get out, and close thedoor. 2-5