traction control CHEVROLET EXPRESS 2019 Owner's Guide

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146162) - 2019 - crc - 11/26/18
286 Vehicle Care
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be free
of grease, gasoline, or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. See
Tire Sidewall
Labeling 0272 for additional
information.
GM recommends replacing worn
tires in complete sets of four (six
for dual rear wheels). Uniform
tread depth on all tires will help
to maintain the performance of
the vehicle. Braking and handling performance may be
adversely affected if all the tires
are not replaced at the same
time. If proper rotation and
maintenance have been done,
all four tires (six for dual rear
wheels) should wear out at
about the same time. See
Tire
Rotation 0283 for information
on proper tire rotation. However,
if it is necessary to replace only
one axle set of worn tires, place
the new tires on the rear axle
(two for single rear wheels, four
for dual rear wheels).
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 287
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y and ZR speed rated tires. Never exceed the winter
tires’
maximum speed capability
when using winter tires with a
lower speed rating.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0279.
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 172 for the label location and
more information about the Tire
and Loading Information label.
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146162) - 2019 - crc - 11/26/18
288 Vehicle Care
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0286 and
Accessories and Modifications
0 230.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires, compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
one-half (1½) times as well on
the government course as a tire
graded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart significantly from the
norm due to variations in driving
habits, service practices and
differences in road
characteristics and climate.
Traction
The traction grades, from
highest to lowest, are AA, A, B,
and C. Those grades represent
the tire's ability to stop on wet
pavement as measured under
controlled conditions on

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 289
specified government test
surfaces of asphalt and
concrete. A tire marked C may
have poor traction performance.
Warning: The traction grade
assigned to this tire is based on
straight-ahead braking traction
tests, and does not include
acceleration, cornering,
hydroplaning, or peak traction
characteristics.
Temperature
The temperature grades are A
(the highest), B, and C,
representing the tire's resistance
to the generation of heat and its
ability to dissipate heat when
tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained
high temperature can cause the
material of the tire to degenerate
and reduce tire life, and
excessive temperature can lead
to sudden tire failure. The grade
C corresponds to a level ofperformance which all
passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and
A represent higher levels of
performance on the laboratory
test wheel than the minimum
required by law. Warning: The
temperature grade for this tire is
established for a tire that is
properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive
loading, either separately or in
combination, can cause heat
buildup and possible tire failure.
Wheel Alignment and Tire
Balance
The tires and wheels were aligned
and balanced at the factory to
provide the longest tire life and best
overall performance. Adjustments to
wheel alignment and tire balancing
are not necessary on a regular
basis. Consider an alignment check
if there is unusual tire wear or the vehicle is significantly pulling to one
side or the other. Some slight pull to
the left or right, depending on the
crown of the road and/or other road
surface variations such as troughs
or ruts, is normal. If the vehicle is
vibrating when driving on a smooth
road, the tires and wheels may need
to be rebalanced. See your dealer
for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146162) - 2019 - crc - 11/26/18
Index 363
Cigarette Lighter . . . . . . . . . . . . . . . . . 99
Circuit Breakers . . . . . . . . . . . . . . . . 264
CleaningExterior Care . . . . . . . . . . . . . . . . . 308
Interior Care . . . . . . . . . . . . . . . . . . 313
Climate Control Systems . . . . . . . 159 Air Conditioning . . . . . . . . . . . . . . 159
Heating . . . . . . . . . . . . . . . . . . . . . . . 159
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Rear Heating System . . . . . . . . . 161
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Cluster, Instrument . . . . . . . . . . . . . 101
Collision Damage Repair . . . . . . . 342
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 91
Compass . . . . . . . . . . . . . . . . . . . . . . . . 96
Connected Services
Connections . . . . . . . . . . . . . . . . . . 358
Diagnostics . . . . . . . . . . . . . . . . . . . 360
Navigation . . . . . . . . . . . . . . . . . . . . 357
Connections
Connected Services . . . . . . . . . . 358
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 192
Control of a Vehicle . . . . . . . . . . . . . 167
Convex Mirrors . . . . . . . . . . . . . . . . . . 38 Coolant
Engine Temperature Gauge . . 104
Cooling . . . . . . . . . . . . . . . . . . . . 159, 161
Cooling System . . . . . . . . . . . . . . . . . 244
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 341
Cruise Control . . . . . . . . . . . . . . . . . . 194
Light . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Customer Assistance . . . . . . . . . . . 338 Offices . . . . . . . . . . . . . . . . . . . . . . . . 337
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 338
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . 344
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 335
D
Damage Repair, Collision . . . . . . . 342
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 348
OnStar . . . . . . . . . . . . . . . . . . . . . . . 348
Data Recorders, Event . . . . . . . . . 347
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 127
Defensive Driving . . . . . . . . . . . . . . . 166 Delayed Locking . . . . . . . . . . . . . . . . . 32
Devices
Auxiliary . . . . . . . . . . . . . . . . . . . . . . 146
Diagnostics Connected Services . . . . . . . . . . 360
Distracted Driving . . . . . . . . . . . . . . . 166
Dome Lamps . . . . . . . . . . . . . . . . . . . 129
Door Cargo Door Relocking . . . . . . . . . . 31
Delayed Locking . . . . . . . . . . . . . . . . 32
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Locks . . . . . . . . . . . . . . . . . . . . 31
Rear Doors . . . . . . . . . . . . . . . . . . . . . 35
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Drive Belt Routing, Engine . . . . . . 334
Driver Assistance Systems . . . . . 197
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 114
Driving Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 210
Defensive . . . . . . . . . . . . . . . . . . . . . 166
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 167
For Better Fuel Economy . . . . . . . 23
Hill and Mountain Roads . . . . . . 170
If the Vehicle is Stuck . . . . . . . . . 172
Loss of Control . . . . . . . . . . . . . . . 168

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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366 Index
J
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . 302
K
Keyless EntryRemote (RKE) System . . . . . . . . . 27
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L
Labeling, Tire Sidewall . . . . . . . . . . 272
Lamps Daytime Running (DRL) . . . . . . 127
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 129
Exterior Controls . . . . . . . . . . . . . . 125
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 126
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 131
License Plate . . . . . . . . . . . . . . . . . 262
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . 108
Reading . . . . . . . . . . . . . . . . . . . . . . 130
Taillamps . . . . . . . . . . . . . . . . . . . . . 261
Lamps, Bulb Replacement . . . . . . 260
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 204 Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Lap-Shoulder Belt . . . . . . . . . . . . . . . 53
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 85
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 79
Lighter, Cigarette . . . . . . . . . . . . . . . . 99
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 130
Entry/Exit . . . . . . . . . . . . . . . . . . . . . 130
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Illumination Control . . . . . . . . . . . 129
Lights Airbag On-Off . . . . . . . . . . . . . . . . . 106
Airbag Readiness . . . . . . . . . . . . . 105
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . .110
Brake System Warning . . . . . . . 109
Charging System . . . . . . . . . . . . . 107
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . 108
Cruise Control . . . . . . . . . . . . . . . . .114
Engine Oil Pressure . . . . . . . . . . .112
Flash-to-Pass . . . . . . . . . . . . . . . . . 126 Lights (cont'd)
High-Beam On . . . . . . . . . . . . . . . . .113
High/Low Beam Changer . . . . . 126
Lane Departure Warning . . . . . . . 111
Low Fuel Warning . . . . . . . . . . . . .113
Seat Belt Reminders . . . . . . . . . . 105
Security . . . . . . . . . . . . . . . . . . . . . . .113
StabiliTrak OFF . . . . . . . . . . . . . . . . 111
Tire Pressure . . . . . . . . . . . . . . . . . .112
Tow/Haul Mode . . . . . . . . . . . . . . . . 111
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . .112
Locking Rear Axle . . . . . . . . . . . . . . 194
Locks Automatic Door . . . . . . . . . . . . . . . . . 32
Cargo Door Relocking . . . . . . . . . . 31
Delayed Locking . . . . . . . . . . . . . . . . 32
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Lockout Protection . . . . . . . . . . . . . . 32
Power Door . . . . . . . . . . . . . . . . . . . . . 31
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Loss of Control . . . . . . . . . . . . . . . . . 168
Low Fuel Warning Light . . . . . . . . . 113
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 79

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146162) - 2019 - crc - 11/26/18
370 Index
Theft-Deterrent Systems (cont'd)Immobilizer . . . . . . . . . . . . . . . . . . . . . 37
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 All-Season . . . . . . . . . . . . . . . . . . . . 271
Buying New Tires . . . . . . . . . . . . . 286
Chains . . . . . . . . . . . . . . . . . . . . . . . . 290
Changing . . . . . . . . . . . . . . . . . . . . . 292
Designations . . . . . . . . . . . . . . . . . 274
Different Size . . . . . . . . . . . . . . . . . 287
Dual Rotation . . . . . . . . . . . . . . . . . 285
Full-Size Spare . . . . . . . . . . . . . . . 301
If a Tire Goes Flat . . . . . . . . . . . . 291
Inspection . . . . . . . . . . . . . . . . . . . . 283
Pressure . . . . . . . . . . . . . . . . . . . . . . 278
Pressure Light . . . . . . . . . . . . . . . . .112
Pressure Monitor Operation . . 280
Pressure Monitor System . . . . . 279
Rotation . . . . . . . . . . . . . . . . . . . . . . 283
Sidewall Labeling . . . . . . . . . . . . . 272
Terminology and Definitions . . 275
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 288
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 289
Wheel Replacement . . . . . . . . . . 289
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 285 Tires (cont'd)
Winter . . . . . . . . . . . . . . . . . . . . . . . . 271
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 206
Tow/Haul Mode . . . . . . . . . . . . . . . . . 189
Tow/Haul Mode Light . . . . . . . . . . . 111
Towing Driving Characteristics . . . . . . . . 210
Equipment . . . . . . . . . . . . . . . . . . . . 222
General Information . . . . . . . . . . 210
Recreational Vehicle . . . . . . . . . . 306
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 215
Trailer Sway Control (TSC) . . . 225
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 306
Traction
Control System(TCS)/StabiliTrak Light . . . . . . .112
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 192
Trailer Sway Control (TSC) . . . . . . . . . . 225
Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 38
Towing . . . . . . . . . . . . . . . . . . . . . . . . 215
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 185
Fluid, Automatic . . . . . . . . . 238, 241
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 341 Trip Odometer . . . . . . . . . . . . . . . . . . 102
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . 128
U
Uniform Tire Quality Grading . . . 288
Using This Manual . . . . . . . . . . . . . . . . 2
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 36
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 167
Identification Number (VIN) . . . 331
Load Limits . . . . . . . . . . . . . . . . . . . 172
Messages . . . . . . . . . . . . . . . . . . . . .119
Personalization . . . . . . . . . . . . . . . 120
Remote Start . . . . . . . . . . . . . . . . . . . 29
Security . . . . . . . . . . . . . . . . . . . . . . . . 36
Speed Messages . . . . . . . . . . . . . .119
Towing . . . . . . . . . . . . . . . . . . . . . . . . 306
Vehicle Ahead Indicator . . . . . . . . 111
Vehicle Care
Tire Pressure . . . . . . . . . . . . . . . . . 278
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 347
Ventilation, Air . . . . . . . . . . . . . . . . . . 164
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Voltmeter Gauge . . . . . . . . . . . . . . . 105