Pontiac Montana SV6 2007 Owner's Manual page 122

If the power sliding door has been manually
locked, you must unlock the PSD before it can be
opened.
Notice: If you leave the power sliding door
on when you go through an automatic car
wash, the door may accidentally open. Be sure
the power sliding door is turned off when
going through a car wash.
If the power sliding door(s) is open or in the process
of closing when you shift out of PARK (P), a chime
will sound. This is a warning that the sliding door(s)
is not completely closed. Also, the Driver
Information Center (DIC) will indicate if the door is
open. See DIC Warnings and Messages on
page 237. Stop the vehicle and close the door.
122
CAUTION:
{
If you shift the transaxle out of PARK (P)
and accelerate before the power sliding
door latches closed, the door may reverse
to the open position. A child or others
could fall out of the vehicle and be
injured. Always make sure the power
sliding door is closed and latched before
you drive away.