GMC 2012 Sierra - Manual (Page 143)

Black plate (5,1) GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-5
8 (Mist): For a single wipe,
turn to
8
, then release. For several
wipes, hold the band on
8
longer.
9
(Off): Turns the windshield
wipers off.
6 (Adjustable Interval Wipes):
Turn the band up for more frequent
wipes or down for less frequent
wipes.
6 (Low Speed): Slow wipes.
?
(High Speed): Fast wipes.
Clear ice and snow from the wiper
blades before using them. If frozen
to the windshield, carefully loosen or
thaw them. Damaged wiper blades
should be replaced. See Wiper
Blade Replacement on page 10‑36.
Heavy snow or ice can overload the
wiper motor. A circuit breaker will
stop the motor until it cools down.
Windshield Washer
{
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.
L
(Washer Fluid): Push the
paddle marked with the windshield
washer symbol at the top of the
multifunction lever, to spray washer
fluid on the windshield. The wipers
clear the window and then either
stop or return to the preset speed.
Compass
The vehicle may have a compass in
the Driver Information Center (DIC).
Compass Zone
The zone is set to zone eight upon
leaving the factory. Your dealer will
set the correct zone for your
location.
Under certain circumstances,
such as during a long-distance,
cross-country trip or moving to a
new state or province, it will be
necessary to compensate for
compass variance by resetting the
zone through the DIC if the zone is
not set correctly.
Compass variance is the difference
between the earth's magnetic north
and true geographic north. If the
compass is not set to the zone
where you live, the compass may
give false readings. The compass
must be set to the variance zone in
which the vehicle is traveling.
To adjust for compass variance, use
the following procedure:
Compass Variance (Zone)
Procedure
1. Do not set the compass zone
when the vehicle is moving. Only
set it when the vehicle is in
P (Park).