2020 GMC SIERRA DENALI child restraint

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Seats and Restraints 111
If a child restraint has been installed
and the ON indicator is lit, see“If
the On Indicator Is Lit for a Child
Restraint” underPassenger Sensing
System 077.
To remove the child restraint,
unbuckle the vehicle seat belt and
let it return to the stowed position.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Storage 113
Underseat Storage
There may be storage under the
rear passenger seat. Lift up on the
seat bench to access. Push the seat
bench toward the floor to close.
Rear Storage
There may be storage in the rear
seat. Pull the tab to access.
Push the storage door to close. The
storage door must be closed before
installing child restraints.
Center Console Storage
Bench Seat
Pull the strap on the side of the
center seatback to access the
storage area and cupholders. Do
not use the center seatback as a
seating position when the seatback
is folded down.
To raise the seatback, push the
seatback rearward until it locks in
the upright position. Push and pull
on the seatback to make sure it is
locked.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Driving and Operating 187
.Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
. Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep
your eyes on the road, keep your
hands on the steering wheel, and
focus your attention on driving. .
Do not use a phone in
demanding driving situations.
Use a hands-free method to
place or receive necessary
phone calls.
. Watch the road. Do not read,
take notes, or look up
information on phones or other
electronic devices.
. Designate a front seat
passenger to handle potential
distractions.
. Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings.
Program all trip information into
any navigation device prior to
driving.
. Wait until the vehicle is parked
to retrieve items that have fallen
to the floor.
. Stop or park the vehicle to tend
to children.
. Keep pets in an appropriate
carrier or restraint. .
Avoid stressful conversations
while driving, whether with a
passenger or on a cell phone.
{Warning
Taking your eyes off the road too
long or too often could cause a
crash resulting in injury or death.
Focus your attention on driving.
Refer to the infotainment manual for
more information on using that
system and the navigation system,
if equipped, including pairing and
using a cell phone.
Defensive Driving
Defensive driving means “always
expect the unexpected.” The first
step in driving defensively is to wear
the seat belt. See Seat Belts064.
. Assume that other road users
(pedestrians, bicyclists, and
other drivers) are going to be
careless and make mistakes.
Anticipate what they may do and
be ready.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
204 Driving and Operating
{Warning
In the case of a sudden stop
or collision, things carried in
the bed of your truck could
shift forward and come into
the passenger area, injuring
you and others. If you put
things in the bed of your truck,
you should make sure they
are properly secured.
Caution
Overloading the vehicle may
cause damage. Repairs would not
be covered by the vehicle
warranty. Do not overload the
vehicle.
Using heavier suspension
components to get added
durability might not change the
weight ratings. Ask your dealer
to help load the vehicle the
right way.
{Warning
Things you put inside the
vehicle can strike and injure
people in a sudden stop or
turn, or in a crash.
.Put things in the cargo
area of the vehicle. Try to
spread the weight evenly.
.Never stack heavier
things, like suitcases,
inside the vehicle so that
some of them are above
the tops of the seats.
.Do not leave an
unsecured child restraint
in the vehicle.
.When you carry
something inside the
vehicle, secure it
whenever you can.
.Do not leave a seat
folded down unless you
need to. There is also important loading
information for off-road driving in
this manual. See
“Loading the
Vehicle for Off-Road Driving“
under Off-Road Driving 0191.
Two-Tiered Loading
Depending on the model of the
pickup, an upper load platform
can be created by positioning
three or four 5 cm (2 in) by
15 cm (6 in) wooden planks
across the width of the pickup
box. The planks must be
inserted in the pickup box
depressions.
When using this upper load
platform, be sure the load is
securely tied down to prevent it
from shifting. The load's center
of gravity should be positioned
in a zone over the rear axle. The
zone is located in the area
between the front of each wheel
well and the rear of each wheel

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13337776) - 2020 - CRC - 8/27/19
Index 489
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 113
Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 369
Center Seat . . . . . . . . . . . . . . . . . . . . . 55
Chains, Tire . . . . . . . . . . . . . . . . . . . . 404
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 122
Charging System Light . . . . . . . . . 137
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 137
Ignition Transmission Lock . . . 363
Child Restraints Infants and Young Children . . . . . 86
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 91
Older Children . . . . . . . . . . . . . . . . . . 84
Securing . . . . . . . . . . . . 104, 107, 108
Systems . . . . . . . . . . . . . . . . . . . . . . . . 88
Circuit Breakers . . . . . . . . . . . . . . . . 370
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 429
Interior Care . . . . . . . . . . . . . . . . . . 435
Climate Control Systems . . . . . . . 177 Air Conditioning . . . . . . . . . . . . . . 177
Dual Automatic . . . . . . . . . . . . . . . 179 Climate Control Systems (cont'd)
Heating . . . . . . . . . . . . . . . . . . . . . . . 177
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Cluster, Instrument . . . . . . . . . . . . . 126
Collision Damage Repair . . . . . . . 469
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . .112
Compass . . . . . . . . . . . . . . . . . . . . . . . 120
Connected Services Connections . . . . . . . . . . . . . . . . . . 485
Diagnostics . . . . . . . . . . . . . . . . . . . 486
Navigation . . . . . . . . . . . . . . . . . . . . 484
Connections Connected Services . . . . . . . . . . 485
Control Hill Descent . . . . . . . . . . . . . . . . . . 237
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 235
Control Light Hill Descent . . . . . . . . . . . . . . . . . . 141
Control of a Vehicle . . . . . . . . . . . . . 188
Convex Mirrors . . . . . . . . . . . . . . . . . . 39
Coolant Engine Temperature Gauge . . 133
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 144
Cooling . . . . . . . . . . . . . . . . . . . . 177, 179
Cooling System . . . . . . . . . . . . . . . . . 346 Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 468
Cruise Control . . . . . . . . . . . . . . . . . . 243 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Cruise Control, Adaptive . . . . . . . . 245
Cupholders . . . . . . . . . . . . . . . . . . . . . 112
Customer Assistance . . . . . . . . . . . 465 Offices . . . . . . . . . . . . . . . . . . . . . . . . 464
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 465
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . . . 471
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 462
Cybersecurity . . . . . . . . . . . . . . . . . . . 474
D
Damage Repair, Collision . . . . . . . 469
Danger, Warning, and Caution . . . . 3
Data Collection
Infotainment System . . . . . . . . . . 475
OnStar . . . . . . . . . . . . . . . . . . . . . . . 475
Data Recorders, Event . . . . . . . . . 474
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 168
Defensive Driving . . . . . . . . . . . . . . . 187
Delayed Locking . . . . . . . . . . . . . . . . . 27

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13337776) - 2020 - CRC - 8/27/19
492 Index
Glove Box . . . . . . . . . . . . . . . . . . . . . . 112
GM Mobility ReimbursementProgram . . . . . . . . . . . . . . . . . . . . . . . 465
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 367
Hazard Warning Flashers . . . . . . . 169
Head Restraints . . . . . . . . . . . . . . . . . 53
Head-up Display . . . . . . . . . . . . . . . . 152
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 366
Automatic . . . . . . . . . . . . . . . . . . . . . 168
Bulb Replacement . . . . . . . . . . . . 367
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 168
Flash-to-Pass . . . . . . . . . . . . . . . . . 168
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 367
High-Beam On Light . . . . . . . . . . 146
High/Low Beam Changer . . . . . 167
Lamps On Reminder . . . . . . . . . 146
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 63
Steering Wheel . . . . . . . . . . . . . . . .119
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Heated Mirrors . . . . . . . . . . . . . . . . . . . 43 Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 215
Heating . . . . . . . . . . . . . . . . . . . . 177, 179
High-Beam On Light . . . . . . . . . . . . 146
High-Speed Operation . . . . . . . . . . 389
Hill and Mountain Roads . . . . . . . . 197
Hill Descent Control (HDC) . . . . . 237
Hill Descent Control Light . . . . . . . 141
Hill Start Assist (HSA) . . . . . . . . . . 235
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 65
HVAC . . . . . . . . . . . . . . . . . . . . . . 177, 179
I
Ignition Positions . . . . . . . . . . 208, 210
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . . . 363
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 37
Indicator Pedestrian Ahead . . . . . . . . . . . . 142
Vehicle Ahead . . . . . . . . . . . . . . . . 142
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 86
Information
Publication Ordering . . . . . . . . . . 471
Infotainment . . . . . . . . . . . . . . . . . . . . 176 Infotainment System . . . . . . . . . . . . 475
Instrument Cluster . . . . . . . . . . . . . . 126
Instrument Panel Overview . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . 44
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 419
K
Keyless EntryRemote (RKE) System . . . . . 13, 16
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . .9, 12
L
Labeling, Tire Sidewall . . . . . . . . . . 381
Lamps Daytime Running (DRL) . . . . . . 168
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 172
Exterior Cargo . . . . . . . . . . . . . . . . 171
Exterior Controls . . . . . . . . . . . . . . 165
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 167
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 174
License Plate . . . . . . . . . . . . . . . . . 369
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . 137

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13337776) - 2020 - CRC - 8/27/19
494 Index
Maintenance Schedule (cont'd)Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 452
Transfer Case . . . . . . . . . . . . . . . . 227
Malfunction Indicator Lamp . . . . . 137
Manual Mirrors . . . . . . . . . . . . . . . . . . 39
Manual Mode . . . . . . . . . . . . . . . . . . . 224
Manual Windows . . . . . . . . . . . . . . . . 47
Memory Seats . . . . . . . . . . . . . . . . . . . 58
Messages Engine Power . . . . . . . . . . . . . . . . 155
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 155
Vehicle Speed . . . . . . . . . . . . . . . . 156
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . 45
Mirrors Automatic Dimming . . . . . . . . . . . . . 43
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 44
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 43
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 39
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 42
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 43
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 39
Manual Rearview . . . . . . . . . . . . . . . 44
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Tilt in Reverse . . . . . . . . . . . . . . . . . . 44
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . 40 Mirrors, Interior Rearview . . . . . . . . 44
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Driver Control . . . . . . . . . . . . . . . . . 238
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 389
N
NavigationConnected Services . . . . . . . . . . 484
New Vehicle Break-In . . . . . . . . . . . 208
Noise Control System . . . . . . . . . . 362
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 131 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 191 Driving . . . . . . . . . . . . . . . . . . . . . . . . 191
Recovery . . . . . . . . . . . . . . . . . . . . . 190
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 339
Engine Oil Life System . . . . . . . 341
Engine Oil Pressure Gauge . . . 132
Pressure Light . . . . . . . . . . . . . . . . 145
Older Children, Restraints . . . . . . . 84
Online Owner Center . . . . . . . . . . . 465
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 475
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 478
OnStar Emergency . . . . . . . . . . . . . 477 OnStar Overview . . . . . . . . . . . . . . . 476
OnStar Security . . . . . . . . . . . . . . . . 478
Operating Mode
Overheated EngineProtection . . . . . . . . . . . . . . . . . . . 352
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 170
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 121
Overheated Engine Protection Operating Mode . . . . 352
Overheating, Engine . . . . . . . . . . . . 351
Overview Instrument Panel . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . 218
Park Assist . . . . . . . . . . . . . . . . . . . . . 257
Parking Brake and P (Park)
Mechanism Check . . . . . . . . . . 364
Extended . . . . . . . . . . . . . . . . . . . . . 219
Over Things That Burn . . . . . . . 219
Parking or Backing Assistance Systems . . . . . . . . . . 257
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 136

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13337776) - 2020 - CRC - 8/27/19
496 Index
RoadsDriving, Wet . . . . . . . . . . . . . . . . . . 196
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 466
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 50
Rotation, Tires . . . . . . . . . . . . . . . . . . 396
Routing, Engine Drive Belt . . . . . . 461
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . 220
S
Safety Defects ReportingCanadian Government . . . . . . . . 472
General Motors . . . . . . . . . . . . . . . 473
U.S. Government . . . . . . . . . . . . . 472
Safety Locks . . . . . . . . . . . . . . . . . . . . . 28
Safety System Check . . . . . . . . . . . . 70
Scheduling Appointments . . . . . . . 467
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 64 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Extender . . . . . . . . . . . . . . . . . . . . . . . . 70
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . 65
Lap-Shoulder Belt . . . . . . . . . . . . . . 67
Reminders . . . . . . . . . . . . . . . . . . . . 135
Replacing after a Crash . . . . . . . . 71
Use During Pregnancy . . . . . . . . . . 69 Seats
Adjustment, Front . . . . . . . . . . . . . . . 54
Center Seat . . . . . . . . . . . . . . . . . . . . 55
Head Restraints . . . . . . . . . . . . . . . . 53
Heated and Ventilated Front . . . . 60
Heated, Rear . . . . . . . . . . . . . . . . . . . 63
Lumbar Adjustment, Front . . . . . . 56
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 58
Power Adjustment, Front . . . . . . . 55
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Reclining Seatbacks . . . . . . . . . . . . 56
Underseat Storage . . . . . . . . . . . .113
Securing Child Restraints . . . . . . . . . . .104, 107, 108
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 146
OnStar . . . . . . . . . . . . . . . . . . . . . . . 478
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 36
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 36
Service . . . . . . . . . . . . . . . . . . . . . . . . . 184 Accessories and
Modifications . . . . . . . . . . . . . . . . 329
Climate Control System . . . . . . . 177
Doing Your Own Work . . . . . . . . 330
Maintenance Records . . . . . . . . 456
Maintenance, General Information . . . . . . . . . . . . . . . . . . 439
Parts Identification . . . . . . . . . . . . 457 Service (cont'd)
Scheduling Appointments . . . . . 467
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . 140
Services Special Application . . . . . . . . . . . 448
Servicing the Airbag . . . . . . . . . . . . . 82
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 363
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 217
Out of Park . . . . . . . . . . . . . . . . . . . 218
Side Blind Zone Alert (SBZA) . . . 274
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 170
Snow Plow . . . . . . . . . . . . . . . . . . . . . 323
Special Application Services . . . . 448
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 458
Speedometer . . . . . . . . . . . . . . . . . . . 130
Start Assist, Hill . . . . . . . . . . . . . . . . . 235
Start Vehicle, Remote . . . . . . . . . . . 25
Starter Switch Check . . . . . . . . . . . 363
Starting the Engine . . . . . . . . . . . . . 212
Steering . . . . . . . . . . . . . . . . . . . . . . . . 188 Fluid, Power . . . . . . . . . . . . . . . . . . 354
Heated Wheel . . . . . . . . . . . . . . . . .119