traction control GMC SAVANA 2020 Owner's Guide

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
272 Vehicle Care
{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 0270 and
Accessories and Modifications
0 215.
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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Vehicle Care 273
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 indoorlaboratory 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.
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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Index 345
Child Restraints (cont'd)Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 63
Older Children . . . . . . . . . . . . . . . . . . 55
Securing . . . . . . . . . . . . . . . . . . . . 70, 72
Systems . . . . . . . . . . . . . . . . . . . . . . . . 59
Cigarette Lighter . . . . . . . . . . . . . . . . . 84
Circuit Breakers . . . . . . . . . . . . . . . . 248
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 293
Interior Care . . . . . . . . . . . . . . . . . . 297
Climate Control Systems . . . . . . . 143
Air Conditioning . . . . . . . . . . . . . . 143
Heating . . . . . . . . . . . . . . . . . . . . . . . 143
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Rear Heating System . . . . . . . . . 145
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Cluster, Instrument . . . . . . . . . . . . . . 86
Collision Damage Repair . . . . . . . 327
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . 76
Compass . . . . . . . . . . . . . . . . . . . . . . . . 81
Connected Services Connections . . . . . . . . . . . . . . . . . . 341
Diagnostics . . . . . . . . . . . . . . . . . . . 342
Navigation . . . . . . . . . . . . . . . . . . . . 340
Connections Connected Services . . . . . . . . . . 341 Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 177
Control of a Vehicle . . . . . . . . . . . . . 152
Convex Mirrors . . . . . . . . . . . . . . . . . . 21
Coolant Engine Temperature Gauge . . . . 89
Cooling . . . . . . . . . . . . . . . . . . . . 143, 146
Cooling System . . . . . . . . . . . . . . . . . 229
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 326
Cruise Control . . . . . . . . . . . . . . . . . . 179 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Customer Assistance . . . . . . . . . . . 323 Offices . . . . . . . . . . . . . . . . . . . . . . . . 322
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 323
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . 329
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 320
Cybersecurity . . . . . . . . . . . . . . . . . . . 332
D
Damage Repair, Collision . . . . . . . 327
Danger, Warning, and Caution . . . . 2 Data Collection
Infotainment System . . . . . . . . . . 333
OnStar . . . . . . . . . . . . . . . . . . . . . . . 333
Data Recorders, Event . . . . . . . . . 332
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 110
Defensive Driving . . . . . . . . . . . . . . . 151
Delayed Locking . . . . . . . . . . . . . . . . . 14
Devices
Auxiliary . . . . . . . . . . . . . . . . . . . . . . 130
Diagnostics
Connected Services . . . . . . . . . . 342
Distracted Driving . . . . . . . . . . . . . . . 150
Dome Lamps . . . . . . . . . . . . . . . . . . . 113
Door Cargo Door Relocking . . . . . . . . . . 14
Delayed Locking . . . . . . . . . . . . . . . . 14
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Locks . . . . . . . . . . . . . . . . . . . . 14
Rear Doors . . . . . . . . . . . . . . . . . . . . . 18
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Drive Belt Routing, Engine . . . . . . 319
Driver Assistance Systems . . . . . 181
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . 99
Driving Better Fuel Economy . . . . . . . . . 150

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
348 Index
Infotainment . . . . . . . . . . . . . . . . . . . . 116
Infotainment System . . . . . . . . . . . . 333
Instrument Cluster . . . . . . . . . . . . . . . 86
Instrument Panel Overview . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . 22
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . 286
K
Keyless EntryRemote (RKE) System . . . . . . . . . . 9
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . 256
Lamps Daytime Running (DRL) . . . . . . .110
Dome . . . . . . . . . . . . . . . . . . . . . . . . . .113
Exterior Controls . . . . . . . . . . . . . . 109
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . .110
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . .115
License Plate . . . . . . . . . . . . . . . . . 247
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . 92 Lamps (cont'd)
Reading . . . . . . . . . . . . . . . . . . . . . . .114
Taillamps . . . . . . . . . . . . . . . . . . . . . 245
Lamps, Bulb Replacement . . . . . . 244
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 189
Lane Departure Warning Light . . . 95
Lap-Shoulder Belt . . . . . . . . . . . . . . . 36
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 70
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 63
Lighter, Cigarette . . . . . . . . . . . . . . . . 84
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . .114
Entry/Exit . . . . . . . . . . . . . . . . . . . . . .114
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Illumination Control . . . . . . . . . . . .113
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) . . . . . . . . . . . . . . . . . . . . . . 92 Lights (cont'd)
Cruise Control . . . . . . . . . . . . . . . . . . 98
Engine Oil Pressure . . . . . . . . . . . . 97
Flash-to-Pass . . . . . . . . . . . . . . . . . .110
High-Beam On . . . . . . . . . . . . . . . . . . 98
High/Low Beam Changer . . . . . .110
Lane Departure Warning . . . . . . . . 95
Low Fuel Warning . . . . . . . . . . . . . . 98
Seat Belt Reminders . . . . . . . . . . . . 90
Security . . . . . . . . . . . . . . . . . . . . . . . . 98
StabiliTrak OFF . . . . . . . . . . . . . . . . . 96
Tire Pressure . . . . . . . . . . . . . . . . . . . 97
Tow/Haul Mode . . . . . . . . . . . . . . . . . 95
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . 96
Locking Rear Axle . . . . . . . . . . . . . . 179
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 . . . . . . . . . . . . . . . . . 153
Low Fuel Warning Light . . . . . . . . . . 98

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
352 Index
SystemsDriver Assistance . . . . . . . . . . . . . 181
T
Taillamps . . . . . . . . . . . . . . . . . . . . . . . 245
Text Telephone (TTY) Users . . . . 323
Theft-Deterrent Systems . . . . . . . . . 20
Immobilizer . . . . . . . . . . . . . . . . . . . . . 20
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 All-Season . . . . . . . . . . . . . . . . . . . . 255
Buying New Tires . . . . . . . . . . . . . 270
Chains . . . . . . . . . . . . . . . . . . . . . . . . 274
Changing . . . . . . . . . . . . . . . . . . . . . 276
Designations . . . . . . . . . . . . . . . . . 258
Different Size . . . . . . . . . . . . . . . . . 271
Dual Rotation . . . . . . . . . . . . . . . . . 269
Full-Size Spare . . . . . . . . . . . . . . . 286
If a Tire Goes Flat . . . . . . . . . . . . 275
Inspection . . . . . . . . . . . . . . . . . . . . 267
Pressure . . . . . . . . . . . . . . . . . . . . . . 262
Pressure Light . . . . . . . . . . . . . . . . . . 97
Pressure Monitor Operation . . 264
Pressure Monitor System . . . . . 263
Rotation . . . . . . . . . . . . . . . . . . . . . . 267
Sidewall Labeling . . . . . . . . . . . . . 256
Terminology and Definitions . . 259 Tires (cont'd)
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 272
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 273
Wheel Replacement . . . . . . . . . . 273
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 269
Winter . . . . . . . . . . . . . . . . . . . . . . . . 255
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 190
Tow/Haul Mode . . . . . . . . . . . . . . . . . 174
Tow/Haul Mode Light . . . . . . . . . . . . 95
Towing Driving Characteristics . . . . . . . . 195
Equipment . . . . . . . . . . . . . . . . . . . . 207
General Information . . . . . . . . . . 195
Recreational Vehicle . . . . . . . . . . 291
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 200
Trailer Sway Control (TSC) . . . 210
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 290
Traction
Control System(TCS)/StabiliTrak Light . . . . . . . . 96
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 177
Trailer
Sway Control (TSC) . . . . . . . . . . 210
Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 21 Trailer (cont'd)
Towing . . . . . . . . . . . . . . . . . . . . . . . . 200
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 170
Fluid, Automatic . . . . . . . . . 224, 227
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 326
Trip Odometer . . . . . . . . . . . . . . . . . . . 87
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 112
U
Uniform Tire Quality Grading . . . 272
Using This Manual . . . . . . . . . . . . . . . . 2
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 19
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 152
Identification Number (VIN) . . . 316
Load Limits . . . . . . . . . . . . . . . . . . . 157
Messages . . . . . . . . . . . . . . . . . . . . 103
Personalization . . . . . . . . . . . . . . . 104
Remote Start . . . . . . . . . . . . . . . . . . . 12
Security . . . . . . . . . . . . . . . . . . . . . . . . 19
Speed Messages . . . . . . . . . . . . . 104
Towing . . . . . . . . . . . . . . . . . . . . . . . . 290
Vehicle Ahead Indicator . . . . . . . . . 96