Oldsmobile 1999 Silhouette - Manual (Page 123)

yellow blue
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The power sliding door on/off switch will also stop the
door immediately, while the door is opening or closing,
when the switch is turned off.
The power sliding door will only open if the transaxle is
in PARK (P). The transaxle does not have to be in
PARK (P) to close the door.
If the power sliding door is open or in the process of
closing when you shift out of PARK (P), a buzzer will
sound. This is a warning that the sliding door is not
completely closed.
If the power sliding door is turned off, the buzzer will
not sound indicating the door is not completely closed.
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.
If anything obstructs the power sliding door while it is
closing, the door will automatically reverse to the open
position, provided it meets sufficient resistance.
Resistance must be as strong as the force of the closing
door, or stronger. The force of the closing door increases
significantly as the door approaches the latched position.