Windshield Wipers; Rainsense™ Ii Wipers - GMC 2008 Yukon Denali Owner's Manual

If your headlamps are in the automatic position or on
low beam, your high-beam headlamps will turn on. They
will stay on as long as you hold the lever toward you.
The high-beam indicator on the instrument panel cluster
will come on. Release the lever to return to normal
operation.

Windshield Wipers

Clear ice and snow from the wiper blades before using
them. If they are frozen to the windshield, gently
loosen or thaw them. Damaged wiper blades may not
clear the windshield well, making it harder to see
and drive safely. If the blades do become damaged,
install new blades or blade inserts. For more information,
see Windshield Wiper Blade Replacement on page 5-53.
Heavy snow or ice can overload the wiper motor. A
circuit breaker will stop the motor until it cools down.
Clear away snow or ice to prevent an overload.
Turn the band with the wiper symbol to control the
windshield wipers.
3-10
8 (Mist): Turn the band to mist for a single wiping
cycle. Hold it there until the wipers start. Then let
go. The wipers stop after one wipe. Hold the band on
mist longer, for more wipe cycles.
9 (Off): To stop the wipers, move the band to off.
6
(Delay): Turn the band to adjust the delay time. The
delay between wiping cycles becomes shorter as
the band is moved to the top of the lever. This can be
very useful in light rain or snow.
6 (Low Speed): Turn the band away from you to
the first solid band past the delay settings, for steady
wiping at low speed.
?
(High Speed): Turn the band further, to the
second solid band past the delay settings, for
high-speed wiping.
Rainsense™ II Wipers
Your vehicle has Rainsense™ II windshield wipers.
These wipers automatically turn on when a sensor,
mounted next to the inside rearview mirror, detects
moisture on the windshield. When active, these wipers
are able to detect moisture on the windshield and
automatically turn on the wipers.