Oldsmobile 2001 Silhouette - Manual (Page 152)

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Windshield Washer
To wash your windshield, press and hold the windshield
washer paddle. The washers and wipers will operate.
When you release the paddle, the washers will stop, and
the wipers will continue to operate for two cycles, unless
your wipers had already been on. In that case, the wipers
will resume the wiper speed you had selected earlier.
CAUTION:
In freezing weather, don’t use your washer until
the windshield is warmed. Otherwise the washer
fluid can form ice on the windshield, blocking
your vision.
Rear Window Washer/Wiper
The rear window
wiper switch is located
in the instrument
panel switchbank.
Push the wiper symbol on the bottom of the switch to
turn on the intermittent wiper. To turn off the wiper,
gently push the top of the switch.