2012 GMC SIERRA 1500 winter tires

Black plate (13,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-13
.Stay in your own lane. Do not
swing wide or cut across the
center of the road. Drive at
speeds that let you stay in your
own lane.
.Be alert on top of hills;
something could be in your lane
(stalled car, accident).
.Pay attention to special road
signs (falling rocks area, winding
roads, long grades, passing or
no-passing zones) and take
appropriate action.
Winter Driving
Driving on Snow or Ice
Drive carefully when there is snow
or ice between the tires and the
road, creating less traction or grip.
Wet ice can occur at about 0°C
(32°F) when freezing rain begins to
fall, resulting in even less traction.
Avoid driving on wet ice or in
freezing rain until roads can be
treated with salt or sand.
Drive with caution, whatever the
condition. Accelerate gently so
traction is not lost. Accelerating too
quickly causes the wheels to spin
and makes the surface under the
tires slick, so there is even less
traction.Try not to break the fragile traction.
If you accelerate too fast, the drive
wheels will spin and polish the
surface under the tires even more.
The
Antilock Brake System (ABS)
on page 9‑53 improves vehicle
stability during hard stops on
slippery roads, but apply the brakes
sooner than when on dry pavement.
Allow greater following distance on
any slippery road and watch for
slippery spots. Icy patches can
occur on otherwise clear roads in
shaded areas. The surface of a
curve or an overpass can remain icy
when the surrounding roads are
clear. Avoid sudden steering
maneuvers and braking while
on ice.
Turn off cruise control on slippery
surfaces.

Black plate (70,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-70 Vehicle Care
Vehicles that have a tire pressure
monitoring system could give an
inaccurate low‐pressure warning
if non‐TPC Spec rated tires are
installed. SeeTire Pressure Monitor
System on page 10‑60.
The Tire and Loading Information
label indicates the original
equipment tires on the vehicle. See
Vehicle Load Limits on page 9‑16
for the label location and more
information about the Tire and
Loading Information label.
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction control, and electronic stability
control, the performance of these
systems can also be affected.
{WARNING
If different sized wheels are used,
there may not be an acceptable
level of performance and safety
if tires not recommended for
those wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires on
page 10‑68 andAccessories and
Modifications on page 10‑3.
Uniform Tire Quality
Grading
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires
by treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires,
compact spare tires, tires with

Black plate (14,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
i-14 INDEX
Vehicle CareTire Pressure . . . . . . . . . . . . . . . 10-58
Ventilation, Air . . . . . . . . . . . . . . . . . 8-10
Visors . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Voltmeter Gauge . . . . . . . . . . . . . . 5-16
W
Warning Brake System Light . . . . . . . . . . . 5-25
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . 5-11
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . iv Cautions and Danger . . . . . . . . . . . .iv
Hazard Flashers . . . . . . . . . . . . . . . 6-5
Washer Fluid . . . . . . . . . . . . . . . . . 10-26 Messages . . . . . . . . . . . . . . . . . . . . 5-48
Wheels Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . 10-72
Different Size . . . . . . . . . . . . . . . 10-70
Replacement . . . . . . . . . . . . . . . 10-72
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-68
Where to Put the Restraint . . . . 3-45 Windows . . . . . . . . . . . . . . . . . . . . . . 2-19
Manual . . . . . . . . . . . . . . . . . . . . . . . 2-19
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Windshield Wiper/Washer . . . . . . . . . . . . . . . . . 5-4
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Wiper Blade Replacement . . . . 10-36