traction control CHEVROLET EXPRESS 2020 Get To Know Guide

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Vehicle Care 273
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
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0271 and
Accessories and Modifications
0 216.
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

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
274 Vehicle Care
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
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 of
performance 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.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
346 Index
Cigarette Lighter . . . . . . . . . . . . . . . . . 84
Circuit Breakers . . . . . . . . . . . . . . . . 249
CleaningExterior Care . . . . . . . . . . . . . . . . . 294
Interior Care . . . . . . . . . . . . . . . . . . 299
Climate Control Systems . . . . . . . 144 Air Conditioning . . . . . . . . . . . . . . 144
Heating . . . . . . . . . . . . . . . . . . . . . . . 144
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Rear Heating System . . . . . . . . . 146
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Cluster, Instrument . . . . . . . . . . . . . . 86
Collision Damage Repair . . . . . . . 328
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 76
Compass . . . . . . . . . . . . . . . . . . . . . . . . 81
Connected Services
Connections . . . . . . . . . . . . . . . . . . 342
Diagnostics . . . . . . . . . . . . . . . . . . . 343
Navigation . . . . . . . . . . . . . . . . . . . . 341
Connections
Connected Services . . . . . . . . . . 342
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 178
Control of a Vehicle . . . . . . . . . . . . . 153
Convex Mirrors . . . . . . . . . . . . . . . . . . 21 Coolant
Engine Temperature Gauge . . . . 89
Cooling . . . . . . . . . . . . . . . . . . . . 144, 146
Cooling System . . . . . . . . . . . . . . . . . 230
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 327
Cruise Control . . . . . . . . . . . . . . . . . . 180
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Customer Assistance . . . . . . . . . . . 324 Offices . . . . . . . . . . . . . . . . . . . . . . . . 323
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 324
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . 330
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 321
Cybersecurity . . . . . . . . . . . . . . . . . . . 333
D
Damage Repair, Collision . . . . . . . 328
Danger, Warning, and Caution . . . . 2
Data Collection Infotainment System . . . . . . . . . . 334
OnStar . . . . . . . . . . . . . . . . . . . . . . . 334
Data Recorders, Event . . . . . . . . . 333
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 112 Defensive Driving . . . . . . . . . . . . . . . 152
Delayed Locking . . . . . . . . . . . . . . . . . 14
Devices
Auxiliary . . . . . . . . . . . . . . . . . . . . . . 131
Diagnostics Connected Services . . . . . . . . . . 343
Distracted Driving . . . . . . . . . . . . . . . 151
Dome Lamps . . . . . . . . . . . . . . . . . . . 114
Door
Cargo Door Relocking . . . . . . . . . . 14
Delayed Locking . . . . . . . . . . . . . . . . 14
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Locks . . . . . . . . . . . . . . . . . . . . 14
Rear Doors . . . . . . . . . . . . . . . . . . . . . 18
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Drive Belt Routing, Engine . . . . . . 320
Driver Assistance Systems . . . . . 182
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . 99
Driving
Better Fuel Economy . . . . . . . . . 151
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 196
Defensive . . . . . . . . . . . . . . . . . . . . . 152
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 152
Hill and Mountain Roads . . . . . . 156
If the Vehicle is Stuck . . . . . . . . . 158

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Index 349
K
Keyless EntryRemote (RKE) System . . . . . . . . . . 9
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . 257
Lamps Daytime Running (DRL) . . . . . . .112
Dome . . . . . . . . . . . . . . . . . . . . . . . . . .114
Exterior Controls . . . . . . . . . . . . . . .110
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 111
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . .116
License Plate . . . . . . . . . . . . . . . . . 247
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . 93
Reading . . . . . . . . . . . . . . . . . . . . . . .115
Taillamps . . . . . . . . . . . . . . . . . . . . . 246
Lamps, Bulb Replacement . . . . . . 245
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 190
Lane Departure Warning Light . . . 96
Lap-Shoulder Belt . . . . . . . . . . . . . . . 36
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 70 LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 62
Lighter, Cigarette . . . . . . . . . . . . . . . . 84
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . .115
Entry/Exit . . . . . . . . . . . . . . . . . . . . . .115
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Illumination Control . . . . . . . . . . . .114
Lights Airbag On-Off . . . . . . . . . . . . . . . . . . . 91
Airbag Readiness . . . . . . . . . . . . . . . 90
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . . . 95
Brake System Warning . . . . . . . . . 94
Charging System . . . . . . . . . . . . . . . 92
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . 93
Cruise Control . . . . . . . . . . . . . . . . . . 99
Engine Oil Pressure . . . . . . . . . . . . 97
Flash-to-Pass . . . . . . . . . . . . . . . . . . 111
High-Beam On . . . . . . . . . . . . . . . . . . 98
High/Low Beam Changer . . . . . . 111
Lane Departure Warning . . . . . . . . 96
Low Fuel Warning . . . . . . . . . . . . . . 98
Seat Belt Reminders . . . . . . . . . . . . 90
Security . . . . . . . . . . . . . . . . . . . . . . . . 98
StabiliTrak OFF . . . . . . . . . . . . . . . . . 96
Tire Pressure . . . . . . . . . . . . . . . . . . . 97 Lights (cont'd)
Tow/Haul Mode . . . . . . . . . . . . . . . . . 96
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . 97
Locking Rear Axle . . . . . . . . . . . . . . 180
Locks Automatic Door . . . . . . . . . . . . . . . . . 14
Cargo Door Relocking . . . . . . . . . . 14
Delayed Locking . . . . . . . . . . . . . . . . 14
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Lockout Protection . . . . . . . . . . . . . . 14
Power Door . . . . . . . . . . . . . . . . . . . . . 14
Safety . . . . . . . . . . . . . . . . . . . . . . 14, 15
Loss of Control . . . . . . . . . . . . . . . . . 154
Low Fuel Warning Light . . . . . . . . . . 98
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 62
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 316
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 310
Maintenance Schedule . . . . . . . . . 305 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 313
Malfunction Indicator Lamp . . . . . . 93

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Index 353
Tires (cont'd)If a Tire Goes Flat . . . . . . . . . . . . 276
Inspection . . . . . . . . . . . . . . . . . . . . 268
Pressure . . . . . . . . . . . . . . . . . . . . . . 263
Pressure Light . . . . . . . . . . . . . . . . . . 97
Pressure Monitor Operation . . 265
Pressure Monitor System . . . . . 264
Rotation . . . . . . . . . . . . . . . . . . . . . . 268
Sidewall Labeling . . . . . . . . . . . . . 257
Terminology and Definitions . . 260
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 273
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 274
Wheel Replacement . . . . . . . . . . 275
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 270
Winter . . . . . . . . . . . . . . . . . . . . . . . . 256
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 191
Tow/Haul Mode . . . . . . . . . . . . . . . . . 175
Tow/Haul Mode Light . . . . . . . . . . . . 96
Towing Driving Characteristics . . . . . . . . 196
Equipment . . . . . . . . . . . . . . . . . . . . 208
General Information . . . . . . . . . . 196
Recreational Vehicle . . . . . . . . . . 292
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 201
Trailer Sway Control (TSC) . . . .211 Towing (cont'd)
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 291
Traction Control System(TCS)/StabiliTrak Light . . . . . . . . 97
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 178
Trailer Sway Control (TSC) . . . . . . . . . . .211
Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 21
Towing . . . . . . . . . . . . . . . . . . . . . . . . 201
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 171
Fluid, Automatic . . . . . . . . . 225, 228
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 327
Trip Odometer . . . . . . . . . . . . . . . . . . . 87
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 113
U
Uniform Tire Quality Grading . . . 273
Using This Manual . . . . . . . . . . . . . . . . 2
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 19
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 153 Vehicle (cont'd)
Identification Number (VIN) . . . 317
Load Limits . . . . . . . . . . . . . . . . . . . 158
Messages . . . . . . . . . . . . . . . . . . . . 104
Personalization . . . . . . . . . . . . . . . 105
Remote Start . . . . . . . . . . . . . . . . . . . 12
Security . . . . . . . . . . . . . . . . . . . . . . . . 19
Speed Messages . . . . . . . . . . . . . 104
Towing . . . . . . . . . . . . . . . . . . . . . . . . 291
Vehicle Ahead Indicator . . . . . . . . . 96
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . 263
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 333
Ventilation, Air . . . . . . . . . . . . . . . . . . 149
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Voltmeter Gauge . . . . . . . . . . . . . . . . 90
W
Warning Brake System Light . . . . . . . . . . . . . 94
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 190
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . 85
Warnings
Hazard Flashers . . . . . . . . . . . . . . .113
Washer Fluid . . . . . . . . . . . . . . . . . . . 237