GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20
102
Instruments and Controls
seats when it is cold outside. The heated
steering wheel indicator light may not
come on.
See
Heated and Ventilated Front Seats
.
Horn
To sound the horn, press
a
on the
steering wheel.
Windshield Wiper/Washer
The windshield wiper control is on the turn
signal lever.
The windshield wipers are controlled by
turning the band with
N
on it.
With the ignition on or in ACC/ACCESSORY,
turn the
N
band to select the wiper speed.
HI :
Use for fast wipes.
LO :
Use for slow wipes.
3
:
Turn the band up for more frequent
intermittent wipes or down for less frequent
intermittent wipes.
OFF :
Use to turn the wipers off.
1x :
For a single wipe, briefly turn the
N
band down. For several wipes, hold the
band down.
L
:
Press
L
on the windshield wiper
control to spray windshield washer fluid and
activate the wipers. The wipers will continue
until
L
is released or the maximum wash
time is reached. When
L
is released,
additional wipes may occur depending on
how long the windshield washer had been
activated. See
for
information on filling the windshield washer
fluid reservoir.
Clear snow and ice from the wiper blades
before using them. If frozen to the
windshield, carefully loosen or thaw them.
Damaged blades should be replaced. See
Heavy snow or ice can overload the wiper
motor.
{
Warning
In freezing weather, do not use the
washer until the windshield is warmed.
Otherwise the washer fluid can form ice
on the windshield, blocking your vision.
{
Warning
Before driving the vehicle, always clear
snow and ice from the hood, windshield,
roof, and rear of the vehicle, including all
lamps and windows. Reduced visibility
from snow and ice buildup could lead to
a crash.
Wipe Parking
If the ignition is turned off while the wipers
are on LO, HI, or
3
, they will
immediately stop.
If the windshield wiper control is ON then
moved to OFF before the driver door is
opened or within 10 minutes, the wipers will
restart and move to the base of the
windshield.
