Headlamp High/Low-Beam Changer; Windshield Wipers - GMC YUKON DENALI 1999 Owner's Manual

Headlamp High/Low-Beam Changer

To change the headlamps from low beam to high or high
to low, pull the turn signal lever all the way toward you.
Then release it.

Windshield Wipers

For a single wiping cycle, turn the control to MIST.
Hold it there until the wipers start, then let go. The
When the high beams are
on, this light on the
instrument panel also
will be on.
You operate the windshield
wipers by turning the
control with the wiper
symbol on it.
wipers will stop after one cycle. If you want more
cycles, hold the control on MIST longer.
You can set the wiper speed for a long or short delay
between wipes. This can be very useful in light rain or
snow. Turn the control to choose the delay time. The
closer to LOW, the shorter the delay.
For steady wiping at low speed, turn the control to the
-
LOW position. For high speed wiping, turn the control
further, to HIGH. To stop the wipers, turn the control
to OFF.
Damaged wiper blades may prevent you from seeing
well enough to drive safely. To avoid damage, 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 your blades do become
damaged, get new blades or blade inserts.
Heavy snow or ice can overload your wipers. The
windshield wiper motor is protected from overload by a
circuit breaker and a fuse. If the motor overheats due to
heavy snow, etc., the wiper will stop until the motor
cools. Although the circuit is protected from electrical
overload, overload due to heavy snow, etc. may cause
wiper linkage damage. Always clear ice and heavy
snow from the windshield before using your
windshield wipers.
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