2018 CHEVROLET CITY EXPRESS traction control

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
140 Driving and Operating
To save fuel, run the engine for
short periods to warm the vehicle
and then shut the engine off and
partially close the window. Moving
about to keep warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle
speed. This keeps the battery
charged to restart the vehicle and to
signal for help with the headlamps.
Do this as little as possible, to
save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
If stuck too severely for the traction
system to free the vehicle, turn the
traction system off and use the
rocking method. SeeTraction
Control/Electronic Stability Control
0 158.
{Warning
If the vehicle's tires spin at high
speed, they can explode, and you
or others could be injured. The
vehicle can overheat, causing an
engine compartment fire or other
damage. Spin the wheels as little
as possible and avoid going
above 56 km/h (35 mph).
Rocking the Vehicle to Get
it Out
Turn the steering wheel left and
right to clear the area around the
front wheels. Turn off any traction
system. Shift back and forth
between R (Reverse) and a low
forward gear, spinning the wheels
as little as possible. To prevent
transmission wear, wait until the
wheels stop spinning before shifting
gears. Release the accelerator
pedal while shifting, and press
lightly on the accelerator pedal when the transmission is in gear.
Slowly spinning the wheels in the
forward and reverse directions
causes a rocking motion that could
free the vehicle. If that does not get
the vehicle out after a few tries, it
might need to be towed out. If the
vehicle does need to be towed out,
see
Towing the Vehicle 0231.
Vehicle Load Limits
It is very important to know how
much weight the vehicle can
carry. This weight is called the
vehicle capacity weight and
includes the weight of all
occupants, cargo and all
nonfactory-installed options.
Two labels on the vehicle may
show how much weight it may
properly carry, the Tire and
Loading Information label and
the Certification label.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
158 Driving and Operating
Warning (Continued)
.The hill start assist system
may not prevent the vehicle
from rolling backwards on a
hill under all load or road
conditions. Always be
prepared to depress the
brake pedal to prevent the
vehicle from rolling
backwards. Failure to do so
may result in a collision or
serious personal injury.
When the vehicle is stopped on a
hill, the hill start assist system
automatically keeps the brakes
applied to help prevent the vehicle
from rolling backward in the time it
takes the driver to release the brake
pedal and apply the accelerator. The hill start assist system will
operate automatically under the
following conditions:
.
The transmission is shifted to a
forward or reverse gear.
. The vehicle is stopped
completely on a hill by applying
the brake. The maximum holding
time is two seconds. After
two seconds the vehicle will
begin to roll back and the hill
start assist system will stop
operating completely.
The hill start assist system will not
operate when the shift lever is
placed in the N (Neutral) or P (Park)
position or on a flat and level road.
Ride Control Systems
Traction Control/
Electronic Stability
Control
System Operation
The vehicle has a Traction Control
System (TCS) and Electronic
Stability Control, an electronic
stability control system. These
systems use various sensors to
monitor driver inputs and vehicle
motion. Under certain driving
conditions, the TCS and Electronic
Stability Control systems help to
perform the following functions:
. Control brake pressure to reduce
wheel slip on one slipping drive
wheel so power is transferred to
a non–slipping drive wheel on
the same axle.
. Control brake pressure and
engine output to reduce drive
wheel slip based on vehicle
speed (traction control function).

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Driving and Operating 159
.Control brake pressure at
individual wheels and engine
output to help the driver maintain
control of the vehicle in the
following conditions:
‐Understeer (vehicle tends to
not follow the steered path
despite increased steering
input)
‐ Oversteer (vehicle tends to
spin due to certain road or
driving conditions)
TCS and Electronic Stability Control
can help the driver to maintain
control of the vehicle, but cannot
prevent loss of vehicle control in all
driving situations.
When the TCS and Electronic
Stability Control systems operate,
the
dindicator in the instrument
cluster flashes to note the following:
. The road may be slippery or the
system may determine some
action is required to help keep
the vehicle on the steered path. .
You may feel a pulsation in the
brake pedal and hear a noise or
vibration from under the hood.
This is normal and indicates that
the traction control system is
working properly.
. Adjust your speed and driving to
the road conditions.
See Traction Control System (TCS)/
Electronic Stability Control Light
0 95 and Electronic Stability Control
(ESC) Off Light 096.
If a malfunction occurs in the
systems, the
dindicator comes on
in the instrument cluster. The TCS
and Electronic Stability Control
systems automatically turn off when
the indicator light is on.
Turning the Systems Off
and On
The TCS/Electronic Stability Control
button is on the instrument panel, to
the left of the steering wheel.
Caution
Do not repeatedly brake or
accelerate heavily when TCS is
off. The vehicle driveline could be
damaged.
To turn off TCS and Electronic
Stability Control, press and
release
g. The Electronic Stability
Control (ESC) Off Light
gcomes on
and stays on in the instrument
cluster.
To turn TCS and Electronic
Stability Control on again, press and
release
g. The Electronic Stability
Control (ESC) Off Light
gdisplayed
in the instrument cluster will turn off.
When
gis used to turn off the
systems, the TCS system still
operates to prevent one drive wheel
from slipping by transferring power
to a non–slipping drive wheel. The

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
160 Driving and Operating
dindicator flashes if this occurs. All
other functions are off and the
d
indicator will not flash.
The TCS and Electronic Stability
Control systems are automatically
reset to on when the ignition is
placed in the OFF position then
back to the ON position.
The systems have a built in
diagnostic feature that test the
systems each time the engine is
started and the vehicle moved
forward or in reverse at a slow
speed. When the test occurs a clunk
noise may be heard and/or a
pulsation in the brake pedal may be
felt. This is normal and is not an
indication of a malfunction.
Adding accessories can affect the
vehicle performance. See
Accessories and Modifications
0 178.
{Warning
.
The Traction Control
System (TCS) and
Electronic Stability Control
(ESC) system are designed
to help the driver maintain
stability but do not prevent
accidents due to abrupt
steering operation at high
speeds or by careless or
dangerous driving
techniques. Reduce vehicle
speed and be especially
careful when driving and
cornering on slippery
surfaces and always drive
carefully.
. Do not modify the vehicle’ s
suspension. If suspension
parts such as shock
absorbers, struts, springs,
stabilizer bars, bushings,
and wheels are not
recommended for your
vehicle or are extremely
deteriorated, the TCS and
(Continued)
Warning (Continued)
ESC systems may not
operate properly. This could
adversely affect vehicle
handling performance, and
the
dindicator may flash or
the
dindicator light may
illuminate.
. If brake related parts such
as brake pads, rotors, and
calipers are not
recommended or are
extremely deteriorated, the
TCS and ESC systems may
not operate properly and the
dindicator light may
illuminate.
. If engine control related
parts are not recommended
or are extremely
deteriorated, the
dindicator
light may illuminate.
. When driving on extremely
inclined surfaces such as
higher banked corners, the
(Continued)

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Driving and Operating 161
Warning (Continued)
TCS and ESC systems may
not operate properly and
the
dindicator may flash or
the
dindicator light may
illuminate. Do not drive on
these types of roads.
. When driving on an
unstable surface such as a
turntable, ferry, elevator,
or ramp, the
dindicator
may flash or the
dindicator
light may illuminate. This is
not a malfunction. Restart
the engine after driving onto
a stable surface.
(Continued)
Warning (Continued)
.If wheels or tires other than
the recommended ones are
used, the TCS and ESC
systems may not operate
properly and the
dindicator
may flash or the
dindicator
light may illuminate.
. The TCS and ESC systems
are not a substitute for
winter tires or tire chains on
a snow covered road.
Cruise Control
{Warning
Cruise control can be dangerous
where you cannot drive safely at
a steady speed. Do not use
cruise control on winding roads or
in heavy traffic.
Cruise control can be dangerous
on slippery roads. On such roads,
fast changes in tire traction can
cause excessive wheel slip, and
you could lose control. Do not use
cruise control on slippery roads.
If equipped with cruise control, a
speed of about 48 km/h (30 mph) or
more can be maintained without
keeping your foot on the
accelerator. Cruise control does not
work at speeds below about
48 km/h (30 mph).
If the brakes are applied, cruise
control disengages.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
178 Vehicle Care
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty.Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the vehicle warranty.
Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, see
Adding Equipment to the
Airbag-Equipped Vehicle 063.
Vehicle Checks
Doing Your Own
Service Work
{Warning
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner ’s manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see Service
Publications Ordering Information
0 272.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Vehicle Care 215
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
The original equipment tires
installed were designed with
requirements to specifically
match the vehicle.
Over a dozen critical
specifications that impact the
overall performance of the
vehicle, including brake systemperformance, ride and handling,
traction control, and tire
pressure monitoring
performance were considered.
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 0213 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.
{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.
This vehicle may have a
different size spare than the
road tires originally installed
on the vehicle. When new, the
vehicle included a spare tire
(Continued)

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Vehicle Care 217
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
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0215 and
Accessories and Modifications
0 178.
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.
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