rear dif CHEVROLET SUBURBAN 2019 Owner's Manual

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
98 Seats and Restraints
It depends on what is hit, the
direction of the impact, and how
quickly the vehicle slows down.
Frontal airbags may inflate at
different crash speeds depending on
whether the vehicle hits an object
straight on or at an angle, and
whether the object is fixed or
moving, rigid or deformable, narrow
or wide.
Frontal airbags are not intended to
inflate during vehicle rollovers, rear
impacts, or many side impacts.
In addition, the vehicle has
advanced technology frontal
airbags. Advanced technology
frontal airbags adjust the restraint
according to crash severity.
The vehicle also has a seat position
sensor that enables the sensing
system to monitor the position of the
driver seat. The seat position sensor
provides information that is used to
adjust the deployment of the driver
frontal airbag.
The front center airbag, if equipped,
is designed to inflate in moderate to
severe side crashes dependingupon the location of the impact,
when either side of the vehicle is
struck. In addition, the front center
airbag is designed to inflate when
the sensing system predicts that the
vehicle is about to roll over on its
side. The front center airbag is not
designed to inflate in frontal
impacts, near frontal impacts,
or rear impacts.
Seat-mounted side impact airbags
are designed to inflate in moderate
to severe side crashes depending
on the location of the impact.
Seat-mounted side impact airbags
are not designed to inflate in frontal
impacts, near frontal impacts,
rollovers, or rear impacts.
A seat-mounted side impact airbag
is designed to inflate on the side of
the vehicle that is struck.
Roof-rail airbags are designed to
inflate in moderate to severe side
crashes depending on the location
of the impact. In addition, these
roof-rail airbags are designed to
inflate during a rollover or in a
severe frontal impact. Roof-rail
airbags are not designed to inflate in
rear impacts. Both roof-rail airbags
will inflate when either side of the
vehicle is struck, if the sensing
system predicts that the vehicle is
about to roll over on its side, or in a
severe frontal impact.
In any particular crash, no one can
say whether an airbag should have
inflated simply because of the
vehicle damage or the repair costs.
What Makes an Airbag
Inflate?
In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inflator. Gas from the inflator fills the
airbag causing the bag to break out
of the cover. The inflator, the airbag,
and related hardware are all part of
the airbag module.
For airbag locations, see
Where Are
the Airbags? 096.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
110 Seats and Restraints
Warning (Continued)
or killed. Never put a rear-facing
child restraint in the front
outboard seat. Secure a
rear-facing child restraint in a rear
seat. It is also better to secure a
forward-facing child restraint in a
rear seat. If you must secure a
forward-facing child restraint in
the front outboard seat, always
move the front passenger seat as
far back as it will go.
Child restraints are devices used to
restrain, seat, or position children in
the vehicle and are sometimes
called child seats or car seats.
There are three basic types of
child restraints:
.Forward-facing child restraints
. Rear-facing child restraints
. Belt-positioning booster seats
The proper child restraint for your
child depends on their size, weight,
and age, and also on whether the
child restraint is compatible with the
vehicle in which it will be used.
For each type of child restraint,
there are many different models
available. When purchasing a child
restraint, be sure it is designed to be
used in a motor vehicle. If it is, the
restraint will have a label saying that
it meets federal motor vehicle safety
standards. The restraint
manufacturer's instructions that
come with the restraint state the
weight and height limitations for a
particular child restraint. In addition, there are many kinds of restraints
available for children with special
needs.
{Warning
To reduce the risk of neck and
head injury in a crash, infants and
toddlers should be secured in a
rear-facing child restraint until age
two, or until they reach the
maximum height and weight limits
of their child restraint.
{Warning
A young child's hip bones are still
so small that the vehicle's regular
seat belt may not remain low on
the hip bones, as it should.
Instead, it may settle up around
the child's abdomen. In a crash,
the belt would apply force on a
body area that is unprotected by
any bony structure. This alone
could cause serious or fatal
(Continued)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
246 Driving and Operating
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 brakingpressure 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.
Ride Control Systems
Traction Control/
Electronic Stability
Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak®, an
electronic stability control system.
These systems help limit wheel spin
and assist the driver in maintaining
control, especially on slippery road
conditions.
TCS activates if it senses that any
of the drive wheels are spinning or
beginning to lose traction. When this
happens, TCS applies the brakes to
the spinning wheels and reduces
engine power to limit wheel spin.
StabiliTrak activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak selectively applies
braking pressure to any one of the
vehicle wheel brakes to assist the
driver in keeping the vehicle on the

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 299
Vehicle Care
General Information
General Information . . . . . . . . . . 300
California Proposition65 Warning . . . . . . . . . . . . . . . . . 301
California Perchlorate Materials Requirements . . . . . 301
Accessories and Modifications . . . . . . . . . . . . . . . . 301
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 302
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 303
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 303
Engine Oil . . . . . . . . . . . . . . . . . . . . 309
Engine Oil Life System . . . . . . . 311
Automatic Transmission Fluid (6-Speed Transmission) . . . . . 313
Automatic Transmission Fluid (10-Speed Transmission) . . . 316
Engine Air Cleaner/Filter . . . . . . 316
Cooling System . . . . . . . . . . . . . . 317
Engine Overheating . . . . . . . . . . 321
Engine Fan . . . . . . . . . . . . . . . . . . . 322
Power Steering Fluid . . . . . . . . . 323
Washer Fluid . . . . . . . . . . . . . . . . . 323 Brakes . . . . . . . . . . . . . . . . . . . . . . . 324
Brake Fluid . . . . . . . . . . . . . . . . . . . 324
Battery - North America . . . . . . 326
Four-Wheel Drive . . . . . . . . . . . . . 326
Front Axle . . . . . . . . . . . . . . . . . . . . 327
Rear Axle . . . . . . . . . . . . . . . . . . . . 327
Starter Switch Check . . . . . . . . . 328
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 329
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 329
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 329
Wiper Blade Replacement . . . . 330
Glass Replacement . . . . . . . . . . 331
Windshield Replacement . . . . . 331
Gas Strut(s) . . . . . . . . . . . . . . . . . . 331
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 332
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 333
Halogen Bulbs . . . . . . . . . . . . . . . . 333
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 333
LED Lighting . . . . . . . . . . . . . . . . . 333
Headlamps . . . . . . . . . . . . . . . . . . . 333
Fog Lamps . . . . . . . . . . . . . . . . . . . 334
Front Turn Signal Lamps . . . . . 334 Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 335
License Plate Lamp . . . . . . . . . . 336
Electrical System
Electrical System Overload . . . 337
Fuses and Circuit Breakers . . . 337
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 338
Instrument Panel Fuse Block (Left) . . . . . . . . . . . . . . . . . 342
Instrument Panel Fuse Block (Right) . . . . . . . . . . . . . . . . . . . . . . 345
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 347
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 348
All-Season Tires . . . . . . . . . . . . . . 349
Winter Tires . . . . . . . . . . . . . . . . . . 349
Low-Profile Tires . . . . . . . . . . . . . 350
All-Terrain Tires . . . . . . . . . . . . . . . 350
Tire Sidewall Labeling . . . . . . . . 350
Tire Designations . . . . . . . . . . . . . 351
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 352
Tire Pressure . . . . . . . . . . . . . . . . . 355
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 356

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 327
If the level is below the bottom of
the fill plug (1) hole, located on the
transfer case, some lubricant will
need to be added. Add enough
lubricant to raise the level to the
bottom of the fill plug (1) hole. Use
care not to overtighten the plug.
When to Change Lubricant
Refer toMaintenance Schedule
0 403 to determine how often to
change the lubricant.
What to Use
Refer to Recommended Fluids and
Lubricants 0413 to determine what
kind of lubricant to use.
Front Axle
When to Check and Change
Lubricant
It is not necessary to regularly
check front axle fluid unless a leak
is suspected, or an unusual noise is
heard. A fluid loss could indicate a
problem. Have it inspected and
repaired. How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
1. Fill Plug
2. Drain Plug
.
When the differential is cold, add
enough lubricant to raise the
level from 0 mm (0 in) to 3.2 mm
(1/8 in) below the fill
plug (1) hole. .
When the differential is at
operating temperature (warm),
add enough lubricant to raise the
level to the bottom of the fill
plug (1) hole.
What to Use
Refer to Recommended Fluids and
Lubricants 0413 to determine what
kind of lubricant to use.
Rear Axle
When to Check Lubricant
It is not necessary to regularly
check rear axle fluid unless a leak is
suspected or an unusual noise is
heard. A fluid loss could indicate a
problem. Have it inspected and
repaired.
All axle assemblies are filled by
volume of fluid during production.
They are not filled to reach a certain
level. When checking the fluid level
on any axle, variations in the
readings can be caused by factory
fill differences between the minimum
and the maximum fluid volume.
Also, if a vehicle has just been

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12460269) - 2019 - CRC - 9/11/18
456 Index
Seats (cont'd)Memory . . . . . . . . . . . . . . . . . . . . . . . . . 70
Power Adjustment, Front . . . . . . . 67
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Reclining Seatbacks . . . . . . . . . . . . 68
Second Row . . . . . . . . . . . . . . . . . . . . 75
Third Row Seat . . . . . . . . . . . . . . . . . 79
Second Row Seats . . . . . . . . . . . . . . 75
Securing Child Restraints . . . . . . . . . . .122, 124, 125
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 161
OnStar . . . . . . . . . . . . . . . . . . . . . . . 437
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 53
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 53
Service . . . . . . . . . . . . . . . . . . . . . . . . . 201 Accessories andModifications . . . . . . . . . . . . . . . . 301
Doing Your Own Work . . . . . . . . 302
Maintenance Records . . . . . . . . 416
Maintenance, General Information . . . . . . . . . . . . . . . . . . 401
Parts Identification Label . . . . . 417
Scheduling Appointments . . . . . 427
Services Special Application . . . . . . . . . . . 409
Servicing the Airbag . . . . . . . . . . . . 105 Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 329
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 228
Out of Park . . . . . . . . . . . . . . . . . . . 229
Side Blind Zone Alert (SBZA) . . . 269
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 187
Special Application Services . . . . 409
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 418
Speedometer . . . . . . . . . . . . . . . . . . . 149
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 159
Start Assist, Hill . . . . . . . . . . . . . . . . . 246
Start Vehicle, Remote . . . . . . . . . . . 43
Starter Switch Check . . . . . . . . . . . 328
Starting the Engine . . . . . . . . . . . . . 224
Steering . . . . . . . . . . . . . . . . . . . . . . . . 205 Fluid, Power . . . . . . . . . . . . . . . . . . 323
Heated Wheel . . . . . . . . . . . . . . . . 135
Wheel Adjustment . . . . . . . . . . . . 134
Wheel Controls . . . . . . . . . . . . . . . 135
Steps
Power Assist . . . . . . . . . . . . . . . . . . . 52
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . . . 335 Storage
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . 129
Center Console . . . . . . . . . . . . . . . 130
Convenience Net . . . . . . . . . . . . . 131
Floor Console . . . . . . . . . . . . . . . . 131
Glove Box . . . . . . . . . . . . . . . . . . . . 128
Instrument Panel . . . . . . . . . . . . . 128
Roof Rack System . . . . . . . . . . . . 131
Sunglasses . . . . . . . . . . . . . . . . . . . 129
Storage Compartments . . . . . . . . . 128
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 214
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 62
Sunglass Storage . . . . . . . . . . . . . . . 129
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward Collision
Alert (FCA) . . . . . . . . . . . . . . . . . . 265
Infotainment . . . . . . . . . . . . . 193, 434
Roof Rack . . . . . . . . . . . . . . . . . . . . 131
Systems
Driver Assistance . . . . . . . . . . . . . 259

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12460269) - 2019 - CRC - 9/11/18
458 Index
Vehicle (cont'd)Messages . . . . . . . . . . . . . . . . . . . . 171
Personalization . . . . . . . . . . . . . . . 172
Remote Start . . . . . . . . . . . . . . . . . . . 43
Security . . . . . . . . . . . . . . . . . . . . . . . . 53
Speed Messages . . . . . . . . . . . . . 171
Towing . . . . . . . . . . . . . . . . . . . . . . . . 385
Vehicle Ahead Indicator . . . . . . . . 159
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . 355
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 433
Ventilation, Air . . . . . . . . . . . . . . . . . . 199
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Voltmeter Gauge . . . . . . . . . . . . . . . 152
W
Warning Brake System Light . . . . . . . . . . . 157
Caution and Danger . . . . . . . . . . . . . 3
Lane Departure (LDW) . . . . . . . 271
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 144
Warnings
Hazard Flashers . . . . . . . . . . . . . . 187
Washer Fluid . . . . . . . . . . . . . . . . . . . 323
Wheels Alignment and Tire Balance . . 367 Wheels (cont'd)
Different Size . . . . . . . . . . . . . . . . . 366
Replacement . . . . . . . . . . . . . . . . . 368
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Where to Put the Restraint . . . . . 112
Windows . . . . . . . . . . . . . . . . . . . . . . . . 60 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Windshield
Replacement . . . . . . . . . . . . . . . . . 331
Wiper/Washer . . . . . . . . . . . . . . . . 135
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 212
Winter Tires . . . . . . . . . . . . . . . . . . . . 349
Wiper Blade Replacement . . . . . . 330
Wipers
Rear Washer . . . . . . . . . . . . . . . . . 137
Wireless Charging . . . . . . . . . . . . . . 141