2018 GMC YUKON Window warning light

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Driving and Operating 203
.Allow greater following distance
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.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby.
If possible, use Roadside
Assistance. See Roadside
Assistance Program 0396. To get
help and keep everyone in the
vehicle safe:
. Turn on the hazard warning
flashers.
. Tie a red cloth to an outside
mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may
cause exhaust gases to get
inside. Engine exhaust contains
carbon monoxide (CO), which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
If the vehicle is stuck in snow:
. Clear snow from the base of
the vehicle, especially any
blocking the exhaust pipe.
. Open a window about 5 cm
(2 in) on the vehicle side
that is away from the wind,
to bring in fresh air.
. Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to circulate the air
inside the vehicle and set
(Continued)
Warning (Continued)
the fan speed to the highest
setting. See“Climate
Control Systems.”
For more information about CO,
see Engine Exhaust 0219.
To save fuel, run the engine for
short periods to warm the vehicle
and then shut the engine off and
partially close the window. Moving
about to keep warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle
speed. This keeps the battery
charged to restart the vehicle and to
signal for help with the headlamps.
Do this as little as possible, to
save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Driving and Operating 233
Caution
Driving with the parking brake on
can overheat the brake system
and cause premature wear or
damage to brake system parts.
Make sure that the parking brake
is fully released and the brake
warning light is off before driving.
To release the parking brake, hold
the regular brake pedal down, then
push down momentarily on the
parking brake pedal until you feel
the pedal release. Slowly pull your
foot up off the parking brake pedal.
If the parking brake is not released
when you begin to drive, a DIC
message will appear and a chime
will sound warning you that the
parking brake is still on.
Brake Assist
The Brake Assist feature is
designed to assist the driver in
stopping or decreasing vehicle
speed in emergency driving
conditions. This feature uses the stability system hydraulic brake
control module to supplement the
power brake system under
conditions where the driver has
quickly and forcefully applied the
brake pedal in an attempt to quickly
stop or slow down the vehicle. The
stability system hydraulic brake
control module increases brake
pressure at each corner of the
vehicle until the ABS activates.
Minor brake pedal pulsation or
pedal movement during this time is
normal and the driver should
continue to apply the brake pedal as
the driving situation dictates. The
Brake Assist feature will
automatically disengage when the
brake pedal is released or brake
pedal pressure is quickly
decreased.
Hill Start Assist (HSA)
Vehicles with StabiliTrak have a Hill
Start Assist (HSA) feature, which
may be useful when the vehicle is
stopped on a grade. This feature is
designed to prevent the vehicle from
rolling, either forward or rearward,
during vehicle drive off. After the
driver completely stops and holds
the vehicle in a complete standstill
on a grade, HSA will be
automatically activated. During the
transition period between when the
driver releases the brake pedal and
starts to accelerate to drive off on a
grade, HSA holds the braking
pressure for a maximum of
two seconds to ensure that there is
no rolling. The brakes will
automatically release when the
accelerator pedal is applied within
the two-second window. If the
vehicle is equipped with the
Integrated Trailer Brake Control
(ITBC) system, HSA may also apply
the trailer brakes. It will not activate
if the vehicle is in a drive gear and
facing downhill or if the vehicle is
facing uphill and in R (Reverse).
There may be situations on minor
hills (less than 5% grade) with a
loaded vehicle or while pulling a
trailer where HSA may activate.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Index 425
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 139Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 196 Driving . . . . . . . . . . . . . . . . . . . . . . . . 196
Recovery . . . . . . . . . . . . . . . . . . . . . 195
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 287
Engine Oil Life System . . . . . . . 289
Engine Oil Pressure Gauge . . . 140
Pressure Light . . . . . . . . . . . . . . . . 152
Older Children, Restraints . . . . . . 100
Online Owner Center . . . . . . . . . . . 395
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 405
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 412
OnStar Connections . . . . . . . . . . . . 409
OnStar Diagnostics . . . . . . . . . . . . . 411
OnStar Emergency . . . . . . . . . . . . . 407
OnStar Navigation . . . . . . . . . . . . . . 408
OnStar Overview . . . . . . . . . . . . . . . 406
OnStar Security . . . . . . . . . . . . . . . . 408
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 179
Ordering Service Publications . . . . . . . . . . 401
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 130 Overheating, Engine . . . . . . . . . . . . 298P
Park
Shifting Into . . . . . . . . . . . . . . . . . . . 217
Shifting Out of . . . . . . . . . . . . . . . . 218
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 232
Brake and P (Park)Mechanism Check . . . . . . . . . . 307
Extended . . . . . . . . . . . . . . . . . . . . . 219
Over Things That Burn . . . . . . . 218
Parking Assist . . . . . . . . . . . . . . . . . . 248
Parking or Backing Assistance Systems . . . . . . . . . . 248
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 145
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Passenger Sensing System . . . . . 93
Perchlorate Materials Requirements, California . . . . . . 282
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 162
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 43
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Outlets . . . . . . . . . . . . . . . . . . . . . . . 130 Power (cont'd)
Protection, Battery . . . . . . . . . . . . 182
Retained Accessory (RAP) . . . 216
Seat Adjustment . . . . . . . . . . . . . . . . 64
Windows . . . . . . . . . . . . . . . . . . . . . . . 58
Power Assist Steps . . . . . . . . . . . . . . 50
Pregnancy, Using Seat Belts . . . . 84
Privacy Vehicle Data Recording . . . . . . . 404
Program Courtesy Transportation . . . . . . 398
Proposition 65 Warning,
California . . . . . . . . . . . .281, 303, 356, Back Cover
R
Radio Frequency Statement . . . . 402
Reading Lamps . . . . . . . . . . . . . . . . . 180
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . 305Locking . . . . . . . . . . . . . . . . . . . . . . . 237
Rear Climate Control System . . . 188
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 70 Heated . . . . . . . . . . . . . . . . . . . . . . . . . 71
Rear Storage . . . . . . . . . . . . . . . . . . . 122
Rear Vision Camera (RVC) . . . . . 248
Rear Window Washer/Wiper . . . . 128
Rearview Mirrors . . . . . . . . . . . . . . . . 57

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Index 429
W
WarningBrake System Light . . . . . . . . . . . 148
Caution and Danger . . . . . . . . . . . . . 3
Lane Departure (LDW) . . . . . . . 256
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 135
Warnings Hazard Flashers . . . . . . . . . . . . . . 178
Washer Fluid . . . . . . . . . . . . . . . . . . . 300
Wheels
Alignment and Tire Balance . . 343
Different Size . . . . . . . . . . . . . . . . . 341
Replacement . . . . . . . . . . . . . . . . . 343
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Where to Put the Restraint . . . . . 105
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Windows . . . . . . . . . . . . . . . . . . . . . . . . 58 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Windshield Replacement . . . . . . . . . . . . . . . . . 309
Wiper/Washer . . . . . . . . . . . . . . . . 126
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 202
Winter Tires . . . . . . . . . . . . . . . . . . . . 325
Wiper Blade Replacement . . . . . . 308 Wipers
Rear Washer . . . . . . . . . . . . . . . . . 128
Wireless Charging . . . . . . . . . . . . . . 132