Oldsmobile 2003 Silhouette Owner's Manual page 214

If you shift the transaxle out of PARK (P) while the
power sliding door is open or in the process of closing,
and the power sliding door is turned off, a buzzer
will sound. This is a warning that the power sliding door
is not completelv closed.
shift the transaxle out of PARK (Pi nd
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.
Door Ajar Warning Message
DOOR
AJAR
United States Canada
This message will come on when the ignition is turned
to RUN or START and the driver's or passenger's
door is open.
It may also come on if a sliding door is not in the fully
latched position.
3-57