coolant temperature GMC SIERRA 1500 2017 User Guide

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Driving and Operating 335
Caution (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 - 5/3/16
356 Vehicle Care
3. Air Duct Clamp
1. Locate the air cleaner/filterassembly. See Engine
Compartment Overview 0343.
2. Disconnect the outlet duct by loosening the air duct
clamp (3).
3. Disconnect the electrical connectors (2) and the
connector harness from the
cover.
4. Remove the four screws (1) on top of the cover of the housing
and lift up the cover.
5. Remove the engine air cleaner/ filter from the housing. Take
care to dislodge as little dirt as
possible.
6. Clean the engine air cleaner/ filter sealing surfaces and the
housing.
7. Inspect or replace the engine air cleaner/filter.
8. Reverse Steps 2–4 to reinstall the filter cover housing.{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.
Cooling System
If the vehicle has the Duramax
diesel engine, see the Duramax
diesel supplement.
The cooling system allows the
engine to maintain the correct
working temperature.
5.3L V8 Engine Shown, 4.3L
V6 Engine and 6.2L V8 Engine Similar
1. Coolant Surge Tank
2. Coolant Surge TankPressure Cap
3. Engine Electric Cooling Fans (Out of View)
{Warning
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
(Continued)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
358 Vehicle Care
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.
Caution
If 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 0447.
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.
Checking Coolant
The coolant surge tank is located in
the engine compartment on the
passenger side of the vehicle. See
Engine Compartment
Overview 0343.
The vehicle must be on a level
surface when checking the coolant
level.
5.3L V8 Shown, 4.3L V6, 6.0L V8, and 6.2L V8 Similar
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, wait until it cools down. The
coolant level should be at or above

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
360 Vehicle Care
4. With the coolant surge tankpressure 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.
Caution
Running 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 0127.
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
0 146 andEngine Power
Messages 0147. If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance
Program
0461.
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)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Vehicle Care 361
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 0307.
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.
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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
362 Vehicle Care
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.
SeeEngine Oil 0348.
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. This fan noise may also be heard
when starting the engine. It will go
away as the fan clutch partially
disengages.
If the vehicle has electric cooling
fan(s), the fans may be heard
spinning at low speed during most
everyday driving. The fans may turn
off if no cooling is required. Under
heavy vehicle loading, trailer towing,
high outside temperatures,
or operation of the air conditioning
system, the fans may change to
high speed and an increase in fan
noise may be heard. This is normal
and indicates that the cooling
system is functioning properly. The
fans will change to low speed when
additional cooling is no longer
required.
The electric engine cooling fans
may run after the engine has been
turned. off. This is normal and no
service is required.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 483
California (cont'd)Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 341
California
Proposition
65 Warning . . . . . . . . . .340, 366, 418
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 453
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 266
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 36
Winter Driving . . . . . . . . . . . . . . . . 248
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . .110
Cargo Lamp . . . . . . . . . . . . . . . . . . . . 172
Caution, Danger, and Warning . . . . 3
CD Player . . . . . . . . . . . . . . . . . . . . . . 191
Center Console Storage . . . . . . . . 109
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 375
Chains, Tire . . . . . . . . . . . . . . . . . . . . 405
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . .118
Charging System Light . . . . . . . . . 132
Check Ignition Transmission Lock . . . 371 Check (cont'd)
Malfunction Indicator
Engine Light . . . . . . . . . . . . . . . . 133
Child Restraints
Infants and Young Children . . . . . 83
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 88
Older Children . . . . . . . . . . . . . . . . . . 81
Securing . . . . . . . . . . . . . . . . . . . . 95, 98
Systems . . . . . . . . . . . . . . . . . . . . . . . . 85
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 427
Interior Care . . . . . . . . . . . . . . . . . . 432
Climate Control Systems
Dual Automatic . . . . . . . . . . . . . . . 231
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Cluster, Instrument . . . . . . . . . . . . . 121
Collision Damage Repair . . . . . . . 464
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 108
Compass . . . . . . . . . . . . . . . . . . . . . . . 115 Messages . . . . . . . . . . . . . . . . . . . . 146
Connections
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 473
Control . . . . . . . . . . . . . . . . . . . . . . . . . 286 Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 284 Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 136
Control of a Vehicle . . . . . . . . . . . . . 239
Convex Mirrors . . . . . . . . . . . . . . . . . . 41
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . 357
Engine Temperature Gauge . . 127
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 138
Cooling System . . . . . . . . . . . . . . . . . 356 Engine Messages . . . . . . . . . . . . 146
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 463
Cruise Control . . . . . . . . . . . . . . . . . . 287 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Cupholders . . . . . . . . . . . . . . . . . . . . . 108
Customer Assistance . . . . . . . . . . . 460
Offices . . . . . . . . . . . . . . . . . . . . . . . . 459
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 460
Customer Information
Service PublicationsOrdering Information . . . . . . . . 466
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 457

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
484 Index
D
Damage Repair, Collision . . . . . . . 464
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 470
OnStar . . . . . . . . . . . . . . . . . . . . . . . 470
Data Recorders, Event . . . . . . . . . 469
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 169
Defensive Driving . . . . . . . . . . . . . . . 239
Delayed Locking . . . . . . . . . . . . . . . . . 35
Diagnostics
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 475
Distracted Driving . . . . . . . . . . . . . . . 238
Dome Lamps . . . . . . . . . . . . . . . . . . . 173
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 141
Ajar Messages . . . . . . . . . . . . . . . 146
Delayed Locking . . . . . . . . . . . . . . . . 35
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Locks . . . . . . . . . . . . . . . . . . . . 35
Drive Belt Routing, Engine . . . . . . 456
Driver Assistance Systems . . . . . 290
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 141
Driving Assistance Systems . . . . . . . . . . 293 Driving (cont'd)
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 304
Defensive . . . . . . . . . . . . . . . . . . . . . 239
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 239
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 247
If the Vehicle is Stuck . . . . . . . . . 249
Loss of Control . . . . . . . . . . . . . . . 241
Off-Road . . . . . . . . . . . . . . . . . . . . . 242
Off-Road Recovery . . . . . . . . . . . 241
Vehicle Load Limits . . . . . . . . . . . 250
Wet Roads . . . . . . . . . . . . . . . . . . . 246
Winter . . . . . . . . . . . . . . . . . . . . . . . . 248
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 231
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 301
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 334
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 376
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 376
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 379, 381
Overload . . . . . . . . . . . . . . . . . . . . . 376 Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 472
Engine Air Cleaner/Filter . . . . . . . . . . . . . 355
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 133
Compartment Overview . . . . . . . 343
Coolant . . . . . . . . . . . . . . . . . . . . . . . 357
Coolant Heater . . . . . . . . . . . . . . . 262
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 127
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 138
Cooling System . . . . . . . . . . . . . . . 356
Cooling System Messages . . . 146
Drive Belt Routing . . . . . . . . . . . . 456
Exhaust . . . . . . . . . . . . . . . . . . . . . . 266
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Oil Life System . . . . . . . . . . . . . . . 351
Oil Messages . . . . . . . . . . . . . . . . . 147
Oil Pressure Gauge . . . . . . . . . . 126
Oil Pressure Light . . . . . . . . . . . . 139
Overheated Protection Operating Mode . . . . . . . . . . . . . 362
Overheating . . . . . . . . . . . . . . . . . . 360
Power Messages . . . . . . . . . . . . . 147
Running While Parked . . . . . . . . 267
Starting . . . . . . . . . . . . . . . . . . . . . . . 260

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 485
Entry Lighting . . . . . . . . . . . . . . . . . . . 174
Equipment, Towing . . . . . . . . . . . . . 324
Event Data Recorders . . . . . . . . . . 469
Exit Lighting . . . . . . . . . . . . . . . . . . . . 174
Extender, Safety Belt . . . . . . . . . . . . 65
Exterior Lamp Controls . . . . . . . . . 166
Exterior Lamps Off Reminder . . . 168
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 362
Fast Idle System . . . . . . . . . . . . . . . . 261
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 355
Fixed Mast Antenna . . . . . . . . . . . . 190
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 169
Flashers, Hazard Warning . . . . . . 170
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 406 Changing . . . . . . . . . . . . . . . . . . . . . 408
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Floor Console Storage . . . . . . . . . . 110
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 435
Fluid AutomaticTransmission . . . . . . . . . . . 352, 354
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 365 Fluid (cont'd)
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 274
Power Steering . . . . . . . . . . . . . . . 363
Washer . . . . . . . . . . . . . . . . . . . . . . . 363
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 171
Folding Mirrors . . . . . . . . . . . . . . . . . . 43
Forward Automatic Braking . . . . . 295
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 293
Four-Wheel Drive . . . . . . . . . . 274, 367
Four-Wheel-Drive Light . . . . . . . . . 136
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 467
Front Axle . . . . . . . . . . . . . . . . . . . . . . 368
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Front Seats
Heated and Ventilated . . . . . . . . . . 55
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Additives . . . . . . . . . . . . . . . . . . . . . 301
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 304
Filling the Tank . . . . . . . . . . . . . . . 302
Foreign Countries . . . . . . . . . . . . 301
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 125
Low Fuel Warning Light . . . . . . . 139 Fuel (cont'd)
Management, Active . . . . . . . . . . 266
Requirements, California . . . . . 301
System Messages . . . . . . . . . . . . 147
Full-Size Spare Tire . . . . . . . . . . . . 417
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 376 Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 376
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 379, 381
G
Garage Door Opener . . . . . . . . . . . 162Programming . . . . . . . . . . . . . . . . . 162
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 127
Engine Oil Pressure . . . . . . . . . . 126
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Odometer . . . . . . . . . . . . . . . . . . . . . 125
Speedometer . . . . . . . . . . . . . . . . . 125
Tachometer . . . . . . . . . . . . . . . . . . . 125
Transmission Temperature . . . . 128
Trip Odometer . . . . . . . . . . . . . . . . 125
Voltmeter . . . . . . . . . . . . . . . . . . . . . 128
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 120
General Information
Service and Maintenance . . . . . 437

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 487
Lamps (cont'd)Messages . . . . . . . . . . . . . . . . . . . . 148
On Reminder . . . . . . . . . . . . . . . . . 140
Reading . . . . . . . . . . . . . . . . . . . . . . 173
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 296
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Lane Keep Assist (LKA) . . . . . . . . 298
Lane Keep Assist Light . . . . . . . . . 136
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 64
Lap-Shoulder Belt . . . . . . . . . . . . . . . 61
LATCH System Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . 94
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 88
LED Lighting . . . . . . . . . . . . . . . . . . . . 373
Light
Hill Decent Control . . . . . . . . . . . 136
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 174
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Illumination Control . . . . . . . . . . . 172
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Airbag On-Off . . . . . . . . . . . . . . . . . 130
Airbag Readiness . . . . . . . . . . . . . 130 Lights (cont'd)
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 135
Brake System Warning . . . . . . . 134
Charging System . . . . . . . . . . . . . 132
Cruise Control . . . . . . . . . . . . . . . . 140
Door Ajar . . . . . . . . . . . . . . . . . . . . . 141
Engine Coolant Temperature Warning . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 139
Flash-to-Pass . . . . . . . . . . . . . . . . . 169
Four-Wheel-Drive . . . . . . . . . . . . . 136
Front Fog Lamp . . . . . . . . . . . . . . 140
High-Beam On . . . . . . . . . . . . . . . . 140
High/Low Beam Changer . . . . . 168
Lane Departure Warning . . . . . . 136
Low Fuel Warning . . . . . . . . . . . . 139
Safety Belt Reminders . . . . . . . . 129
Security . . . . . . . . . . . . . . . . . . . . . . 140
StabiliTrak
®OFF . . . . . . . . . . . . . 137
Tire Pressure . . . . . . . . . . . . . . . . . 138
Tow/Haul Mode . . . . . . . . . . . . . . . 136
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 138
Traction Off . . . . . . . . . . . . . . . . . . . 137
Locking Rear Axle . . . . . . . . . . . . . . 286
Locks Automatic Door . . . . . . . . . . . . . . . . . 35 Locks (cont'd)
Delayed Locking . . . . . . . . . . . . . . . . 35
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Lockout Protection . . . . . . . . . . . . . . 36
Power Door . . . . . . . . . . . . . . . . . . . . . 35
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Loss of Control . . . . . . . . . . . . . . . . . 241
Low Fuel Warning Light . . . . . . . . . 139
Low-Profile Tires . . . . . . . . . . . . . . . . 385
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 88
Lumbar Adjustment . . . . . . . . . . . . . . 52 Front Seats . . . . . . . . . . . . . . . . . . . . . 52
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 451
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 444
Maintenance Schedule . . . . . . . . . 438 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 447
Transfer Case . . . . . . . . . . . . . . . . 274
Malfunction Indicator Lamp . . . . . 133
Manual Mirrors . . . . . . . . . . . . . . . . . . 41
Manual Mode . . . . . . . . . . . . . . . . . . . 270
Manual Windows . . . . . . . . . . . . . . . . 46
Memory Features . . . . . . . . . . . . . . . . 11