1995 Pontiac Trans Sport Owner's Manual - Page 80

If any door is open when you press the lock symbol or the rear of either power door lock switch, a chime will sound three times. This indicates all doors and the that liftgate will lock about five seconds after last door the has been closed. To override the lock delay feature, press the lock symbol or therear of either power door lockswitch again, and the doors and liftgate will lock immediately. If the sliding door is open, it will lock automatically within five seconds after it is closed, and the doors and liftgate will lock again. Remote Operationof the Power Sliding Door To cancel the lock delay feature, press the unlock symbol or the front of either power door lock switch. If you have the optional power sliding door (see "Power Sliding Door" later inthis section), your remote transmitter will have a third button that has a van symbol on it. Press it to open close the sliding door. or If the sliding door is locked,first press the unlock symbol twice to unlock all doors, then press the van symbol to open the slidingdoor. You can operate the power sliding door with the remote transmitter only when the power sliding door enable switch on the overhead console is in the ON position. 2-9