coolant temperature GMC SIERRA DENALI 2017 User Guide

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Driving and Operating 351Caution (Continued)damaged if either the front or rear
axle ratings or the Gross Vehicle
Weight Rating (GVWR) are
exceeded.
The plow the vehicle can carry
depends on many things, such as:
.
The options the vehicle came
with, and the weight of those
options.
.
The weight and number of
passengers to be carried.
.
The weight of items added to the
vehicle, like a tool box or
truck cap.
.
The total weight of any
additional cargo to be carried.
For example, if the snow plow
weighs 318 kg (700 lb), the total
weight of all occupants and cargo
inside the cab should not exceed
135 kg (300 lb). This means that you
may only be able to carry one
passenger. Even this may be too much if there is other equipment
already adding to the weight of the
vehicle.
To safely carry a snow plow on the
vehicle:
.
Follow all aftermarket snow plow
manufacturer ’ s instructions for
the operation and transportation
of the snow plow.
.
With a snow plow attached, the
engine coolant temperature
gauge may show a higher
temperature than while driving
without one. The snow plow
could block the airflow to the
radiator. This could be more
noticeable as vehicle speed
increases. At speeds above
72 km (45 mph), this may cause
the engine coolant to overheat.
.
To increase the airflow, move the
snow plow blade postion.
.
If driving more than 24 km
(15 mi), angle the plow blade
position.
.
Make sure the weight on the
front and rear axles does not
exceed the axle rating for each. .
For the front axle, if more cargo
or passengers must be carried,
appropriate counter ballast must
be installed rear of the rear axle.
Counter ballast must be properly
secured so it will not move
during driving.
.
Rear ballast may be required to
ensure a proper front and rear
weight distribution ratio, even
though the actual weight at the
front axle may be less than the
front axle rating.
.
The snow plow manufacturer or
installer can assist in
determining the amount of rear
ballast required, to help make
sure the snow plow/vehicle
combination does not exceed
the GVW rating, the front and
rear axle ratings, and the front
and rear weight distribution ratio.
.
The total vehicle must not
exceed the GVW rating.
Front axle reserve capacity is the
difference between the Gross Axle
Weight Rating (GAWR) and the front
axle weight of the vehicle with full
fuel and passengers. This is the

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
374 Vehicle Care
Engine Coolant The cooling system in the vehicle is
filled with DEX-COOL ®
engine
coolant. This coolant is designed to
remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0 376 .
What to Use
{ WarningAdding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
(Continued) Warning (Continued) overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
.
Gives freezing protection down
to − 37 °C ( − 34 °F), outside
temperature.
.
Gives boiling protection up to
129 °C (265 °F), engine
temperature.
.
Protects against rust and
corrosion.
.
Will not damage aluminum parts.
.
Helps keep the proper engine
temperature. CautionIf improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants 0 464 .
Never dispose of engine coolant by
putting it in the trash, or by pouring
it on the ground, or into sewers,
streams, or bodies of water. Have
the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
376 Vehicle Care
Light-Duty
Coolant Surge
Tank
Pressure Cap Heavy-Duty
Coolant Surge
Tank
Pressure Cap
1. Remove the coolant surge tank
pressure cap when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
Turn the pressure cap slowly
counterclockwise about one full
turn. If a hiss is heard, wait for
that to stop. A hiss means
there is still some pressure left.
2. Keep turning the pressure cap
slowly, and remove it.
3. Fill the coolant surge tank with
the proper mixture to the FULL
COLD mark. 4. With the coolant surge tank
pressure cap off, start the
engine and let it run until the
engine coolant temperature
gauge indicates approximately
90 °C (195 °F).
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches the
FULL COLD mark.
5. Replace the pressure cap
tightly.
6. Verify coolant level after the
engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1 – 6.
Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured. Engine Overheating If the vehicle has the Duramax
diesel engine, see the Duramax
diesel supplement.
CautionRunning the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
The vehicle has several indicators
to warn of engine overheating.
There is a coolant temperature
gauge in the vehicle's instrument
cluster. See Engine Coolant
Temperature Gauge 0 138 .
In addition, there are ENGINE
OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE
ENGINE, and ENGINE POWER IS
REDUCED messages in the Driver
Information Center (DIC).
See Engine Cooling System
Messages 0 159 and Engine Power
Messages 0 160 .

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Vehicle Care 377If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance Program
0 478 .
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
4.3L V6, 5.3L V8, and 6.2L
V8 Engines
Check to see if the engine cooling
fans are running. If the engine is
overheating, the fans should be
running. If they are not, do not
continue to run the engine and have
the vehicle serviced.
If Steam is Coming from the
Engine Compartment
{ Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
(Continued) Warning (Continued) off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam is Coming from
the Engine Compartment The ENGINE OVERHEATED STOP
ENGINE or the ENGINE
OVERHEATED IDLE ENGINE
message, along with a low coolant
condition, can indicate a serious
problem. If there is an engine overheat
warning, but no steam is seen or
heard, the problem may not be too
serious. Sometimes the engine can
get a little too hot when the vehicle:
.
Climbs a long hill on a hot day.
.
Stops after high-speed driving.
.
Idles for long periods in traffic.
.
Tows a trailer; see Trailer Towing
0 323 .
If the ENGINE OVERHEATED
STOP ENGINE or the ENGINE
OVERHEATED IDLE ENGINE
message appears with no sign of
steam, try this for a minute or so:
1. Turn the air conditioning off.
2. Turn the heater on to the
highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral) and let the
engine idle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
378 Vehicle Care If the temperature overheat gauge is
no longer in the overheat zone or an
overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle distance from the vehicle in
front. If the warning does not come
back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is still no sign of steam and
the vehicle is equipped with an
engine driven cooling fan, push
down the accelerator until the
engine speed is about twice as fast
as normal idle speed for at least
five minutes while the vehicle is
parked. If the warning is still there,
turn off the engine and get everyone
out of the vehicle until it cools down.
If there is no sign of steam, idle the
engine for five minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Overheated Engine
Protection
Operating Mode If an overheated engine condition
exists and the ENGINE POWER IS
REDUCED message displays, an
overheat protection mode which
alternates firing groups of cylinders
helps to prevent engine damage. In
this mode, a loss in power and
engine performance will be noticed.
This operating mode allows the
vehicle to be driven to a safe place
in an emergency. Driving extended
distances and/or towing a trailer in
the overheat protection mode
should be avoided.
Caution
After driving in the overheated
engine protection operating
mode, the engine oil will be
severely degraded. Any repairs
performed before the engine is
cool may cause engine damage.
Allow the engine to cool before
(Continued) Caution (Continued) attempting any repair. Repair the
cause of coolant loss, change the
oil, and reset the oil life system.
See Engine Oil 0 364 .
Engine Fan If the vehicle has a clutched engine
cooling fan, when the clutch is
engaged, the fan spins faster to
provide more air to cool the engine.
In most everyday driving conditions,
the fan is spinning slower and the
clutch is not fully engaged. This
improves fuel economy and reduces
fan noise. Under heavy vehicle
loading, trailer towing, and/or high
outside temperatures, the fan speed
increases as the clutch more fully
engages, so an increase in fan
noise may be heard. This is normal
and should not be mistaken as the
transmission slipping or making
extra shifts. It is merely the cooling
system functioning properly. The fan
will slow down when additional
cooling is not required and the
clutch disengages.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
380 Vehicle Care What to Use To determine what kind of fluid to
use, see Recommended Fluids and
Lubricants 0 464 . Always use the
proper fluid.
CautionUse of the incorrect fluid may
damage the vehicle and the
damages may not be covered by
the vehicle warranty. Always use
the correct fluid listed in
Recommended Fluids and
Lubricants 0 464 .
Washer Fluid What to Use When windshield washer fluid needs
to be added, be sure to read the
manufacturer's instructions before
use. Use a fluid that has sufficient
protection against freezing in an
area where the temperature may fall
below freezing. Adding Washer Fluid The vehicle has a low washer fluid
message on the DIC that comes on
when the washer fluid is low. The
message is displayed for
15 seconds at the start of each
ignition cycle. When the WASHER
FLUID LOW ADD FLUID message
displays, washer fluid will need to
be added to the windshield washer
fluid reservoir.
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview 0 359 for
reservoir location. Caution .
Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
.
Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
.
Do not mix water with
ready-to-use washer fluid.
Water can cause the
solution to freeze and
damage the washer fluid
tank and other parts of the
washer system.
.
When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
.
Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
(Continued)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
500 Index California (cont'd)
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 357
California
Proposition
65 Warning . . . . . . . . . .357, 383, 435
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 470
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 282
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 41
Winter Driving . . . . . . . . . . . . . . . . 263
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 121
Cargo Lamp . . . . . . . . . . . . . . . . . . . . 184
Caution, Danger, and Warning . . . . 3
CD Player . . . . . . . . . . . . . . . . . . . . . . 203
Center Console Storage . . . . . . . . 120
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 391
Center Seat . . . . . . . . . . . . . . . . . . . . . 57
Chains, Tire . . . . . . . . . . . . . . . . . . . . 422
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 130
Charging System Light . . . . . . . . . 143 Check
Engine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 144
Ignition Transmission Lock . . . 388
Child Restraints
Infants and Young Children . . . . . 89
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 95
Older Children . . . . . . . . . . . . . . . . . . 87
Securing . . . . . . . . . . . . . . . . . 106, 110
Systems . . . . . . . . . . . . . . . . . . . . . . . . 91
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 444
Interior Care . . . . . . . . . . . . . . . . . . 449
Climate Control
Systems . . . . . . . . . . . . . . . . . 243, 245
Air Conditioning . . . . . . . . . 243, 245
Dual Automatic . . . . . . . . . . . . . . . 246
Heating . . . . . . . . . . . . . . . . . . 243, 245
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Cluster, Instrument . . . . . . . . . . . . . 132
Collision Damage Repair . . . . . . . 481
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . .119
Compass . . . . . . . . . . . . . . . . . . . . . . . 126
Messages . . . . . . . . . . . . . . . . . . . . 158
Connections
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 491 Control . . . . . . . . . . . . . . . . . . . . . . . . . 301
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 299
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 147
Control of a Vehicle . . . . . . . . . . . . . 254
Convex Mirrors . . . . . . . . . . . . . . . . . . 46
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . . . 374
Engine Temperature Gauge . . 138
Engine Temperature
Warning Light . . . . . . . . . . . . . . . 149
Cooling . . . . . . . . . . . . . . .243, 245, 246
Cooling System . . . . . . . . . . . . . . . . . 372
Engine Messages . . . . . . . . . . . . 159
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 480
Cruise Control . . . . . . . . . . . . . . . . . . 302
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Cupholders . . . . . . . . . . . . . . . . . . . . . 119
Customer Assistance . . . . . . . . . . . 477
Offices . . . . . . . . . . . . . . . . . . . . . . . . 476
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 477
Customer Information
Service Publications
Ordering Information . . . . . . . . 483

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Index 501Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 474
D Damage Repair, Collision . . . . . . . 481
Danger, Warning, and Caution . . . . 3
Data Collection
Infotainment System . . . . . . . . . . 487
OnStar . . . . . . . . . . . . . . . . . . . . . . . 486
Data Recorders, Event . . . . . . . . . 486
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 181
Defensive Driving . . . . . . . . . . . . . . . 254
Delayed Locking . . . . . . . . . . . . . . . . . 40
Diagnostics
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 492
Distracted Driving . . . . . . . . . . . . . . . 253
Dome Lamps . . . . . . . . . . . . . . . . . . . 185
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 152
Ajar Messages . . . . . . . . . . . . . . . 158
Delayed Locking . . . . . . . . . . . . . . . . 40
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power Locks . . . . . . . . . . . . . . . . . . . . 40
Drive Belt Routing, Engine . . . . . . 473
Driver Assistance Systems . . . . . 305
Driver Information
Center (DIC) . . . . . . . . . . . . . 152, 154 Driving
Assistance Systems . . . . . . . . . . 308
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 320
Defensive . . . . . . . . . . . . . . . . . . . . . 254
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 254
For Better Fuel Economy . . . . . . . 31
Hill and Mountain Roads . . . . . . 262
If the Vehicle is Stuck . . . . . . . . . 264
Loss of Control . . . . . . . . . . . . . . . 256
Off-Road . . . . . . . . . . . . . . . . . . . . . 257
Off-Road Recovery . . . . . . . . . . . 256
Vehicle Load Limits . . . . . . . . . . . 265
Wet Roads . . . . . . . . . . . . . . . . . . . 261
Winter . . . . . . . . . . . . . . . . . . . . . . . . 263
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 246
E E85 or FlexFuel . . . . . . . . . . . . . . . . 317
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 350
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 393
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 393
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 396, 398
Overload . . . . . . . . . . . . . . . . . . . . . 392 Emergency
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 489
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 371
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 144
Compartment Overview . . . . . . . 359
Coolant . . . . . . . . . . . . . . . . . . . . . . . 374
Coolant Heater . . . . . . . . . . . . . . . 278
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 138
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 149
Cooling System . . . . . . . . . . . . . . . 372
Cooling System Messages . . . 159
Drive Belt Routing . . . . . . . . . . . . 473
Exhaust . . . . . . . . . . . . . . . . . . . . . . 282
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Oil Life System . . . . . . . . . . . . . . . 367
Oil Messages . . . . . . . . . . . . . . . . . 159
Oil Pressure Gauge . . . . . . . . . . 137
Oil Pressure Light . . . . . . . . . . . . 150
Overheated Protection
Operating Mode . . . . . . . . . . . . . 378
Overheating . . . . . . . . . . . . . . . . . . 376
Power Messages . . . . . . . . . . . . . 160
Running While Parked . . . . . . . . 282
Starting . . . . . . . . . . . . . . . . . . . . . . . 275

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
502 Index Entry Lighting . . . . . . . . . . . . . . . . . . . 186
Equipment, Towing . . . . . . . . . . . . . 340
Event Data Recorders . . . . . . . . . . 486
Exit Lighting . . . . . . . . . . . . . . . . . . . . 186
Extender, Safety Belt . . . . . . . . . . . . 71
Exterior Lamp Controls . . . . . . . . . 178
Exterior Lamps Off Reminder . . . 180
F Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 378
Fast Idle System . . . . . . . . . . . . . . . . 276
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 371
Fixed Mast Antenna . . . . . . . . . . . . 203
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 181
Flashers, Hazard Warning . . . . . . 182
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 423
Changing . . . . . . . . . . . . . . . . . . . . . 425
FlexFuel
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Floor Console Storage . . . . . . . . . . 121
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 452
Fluid
Automatic
Transmission . . . . . . . . . . . 368, 371
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 381 Fluid (cont'd)
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 289
Power Steering . . . . . . . . . . . . . . . 379
Washer . . . . . . . . . . . . . . . . . . . . . . . 380
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 183
Folding Mirrors . . . . . . . . . . . . . . . . . . 48
Forward Automatic Braking . . . . . 310
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 308
Four-Wheel Drive . . . . . . . . . . 289, 383
Four-Wheel-Drive Light . . . . . . . . . 147
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 484
Front Axle . . . . . . . . . . . . . . . . . . . . . . 384
Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 57
Heated and Ventilated . . . . . . . . . . 62
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Additives . . . . . . . . . . . . . . . . . . . . . 316
Economy Driving . . . . . . . . . . . . . . . 31
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 319
Filling the Tank . . . . . . . . . . . . . . . 317
Foreign Countries . . . . . . . . . . . . 316
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 136 Fuel (cont'd)
Low Fuel Warning Light . . . . . . . 150
Management, Active . . . . . . . . . . 281
Requirements, California . . . . . 316
System Messages . . . . . . . . . . . . 160
Full-Size Spare Tire . . . . . . . . . . . . 434
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 393
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 396, 398
G Garage Door Opener . . . . . . . . . . . 174
Programming . . . . . . . . . . . . . . . . . 174
Gauges
Engine Coolant
Temperature . . . . . . . . . . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 137
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Odometer . . . . . . . . . . . . . . . . . . . . . 136
Speedometer . . . . . . . . . . . . . . . . . 136
Tachometer . . . . . . . . . . . . . . . . . . . 136
Transmission Temperature . . . . 139
Trip Odometer . . . . . . . . . . . . . . . . 136
Voltmeter . . . . . . . . . . . . . . . . . . . . . 139
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 131

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
504 Index Lamps (cont'd)
Exterior Controls . . . . . . . . . . . . . . 178
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . 180
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . 144
Messages . . . . . . . . . . . . . . . . . . . . 160
On Reminder . . . . . . . . . . . . . . . . . 151
Reading . . . . . . . . . . . . . . . . . . . . . . 185
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 312
Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Lane Keep Assist (LKA) . . . . . . . . 313
Lane Keep Assist Light . . . . . . . . . 148
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 71
Lap-Shoulder Belt . . . . . . . . . . . . . . . 67
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . 106
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 95
LED Lighting . . . . . . . . . . . . . . . . . . . . 390
Light
Hill Descent Control . . . . . . . . . . 147
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 186
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Lighting (cont'd)
Illumination Control . . . . . . . . . . . 184
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Lights . . . . . . . . . . . . . . . . . . . . . . 147, 148
Airbag On-Off . . . . . . . . . . . . . . . . . 141
Airbag Readiness . . . . . . . . . . . . . 141
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 146
Brake System Warning . . . . . . . 145
Charging System . . . . . . . . . . . . . 143
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 144
Cruise Control . . . . . . . . . . . . . . . . 152
Door Ajar . . . . . . . . . . . . . . . . . . . . . 152
Engine Coolant
Temperature Warning . . . . . . . 149
Engine Oil Pressure . . . . . . . . . . 150
Flash-to-Pass . . . . . . . . . . . . . . . . . 181
Four-Wheel-Drive . . . . . . . . . . . . . 147
Front Fog Lamp . . . . . . . . . . . . . . 151
High-Beam On . . . . . . . . . . . . . . . . 151
High/Low Beam Changer . . . . . 180
Lane Departure Warning . . . . . . 147
Low Fuel Warning . . . . . . . . . . . . 150
Safety Belt Reminders . . . . . . . . 140
Security . . . . . . . . . . . . . . . . . . . . . . 151
StabiliTrak ®
OFF . . . . . . . . . . . . . 148
Tire Pressure . . . . . . . . . . . . . . . . . 150 Lights (cont'd)
Tow/Haul Mode . . . . . . . . . . . . . . . 147
Traction Control System
(TCS)/StabiliTrak ®
. . . . . . . . . . 149
Traction Off . . . . . . . . . . . . . . . . . . . 148
Locking Rear Axle . . . . . . . . . . . . . . 302
Locks
Automatic Door . . . . . . . . . . . . . . . . . 40
Delayed Locking . . . . . . . . . . . . . . . . 40
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Lockout Protection . . . . . . . . . . . . . . 41
Power Door . . . . . . . . . . . . . . . . . . . . . 40
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Loss of Control . . . . . . . . . . . . . . . . . 256
Low Fuel Warning Light . . . . . . . . . 150
Low-Profile Tires . . . . . . . . . . . . . . . . 402
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 95
Lumbar Adjustment . . . . . . . . . . . . . . 58
Front Seats . . . . . . . . . . . . . . . . . . . . . 58
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 468
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 461
Maintenance Schedule . . . . . . . . . 455