GMC 2008 Envoy - Manual (Page 143)

Windshield Wipers
8 (Mist): Turn the band to mist, for a single wiping
cycle. Hold it there until the wipers start. Then let go.
The wipers will stop after one wipe. If more wipes are
needed, hold the band on mist longer.
9 (Off): Move the band to off, to stop the wipers.
N (Windshield Wipers): Turn the band to control the
windshield wipers.
The wiper speed can be set for a long or short delay
between wipes. This can be very useful in light rain or
snow. Turn the band to choose the delay time. The
closer to the top of the lever, the shorter the delay.
For steady wiping at low speed, turn the band away from
you to the first solid band past the delay settings. For
high-speed wiping, turn the band further, to the second
solid band past the delay settings. To stop the wipers,
move the band to off.
Be sure to clear ice and snow from the wiper blades
before using them. If they are frozen to the windshield,
carefully loosen or thaw them. If the blades do become
worn or damaged, get new blades or blade inserts.
Windshield Washer
L (Windshield Washer): To spray washer fluid on
the windshield, press the windshield washer paddle.
The wipers will clear the window and then either stop
or return to your preset speed.
{ 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.
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