Oldsmobile 2002 Silhouette - Manual (Page 195)

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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.
Door Ajar Warning Message
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.