GMC 2007 Acadia - Manual (Page 179)

Rear Window Wiper/Washer
{ CAUTION:
In freezing weather, do not use your
washer until the windshield is warmed.
Otherwise the washer fluid can form ice
on the windshield, blocking your vision.
The rear wiper control is located on the turn
signal/multifunction lever.
To turn the rear wiper on, slide the lever to a
wiper position.
9 (Off): Slide the lever to this setting to turn
the wiper off.
5 (Rear Wiper Delay): Slide the lever to this
setting to turn on the rear wiper delay.
Z
(Rear Wiper): Slide the lever to this setting
to turn on the rear wiper.
= (Rear Wiper Wash): Push the button on
the end of the turn signal/multifunction lever
to spray washer fluid on the rear window. The
wipers will clear the rear window and either
stop or return to your preset speed. For more
washer cycles, press and hold the button.
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