2018 CHEVROLET CITY EXPRESS engine

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
170 Driving and Operating
driver to turn the RPA on and off. To
turn the RPA off, the ignition switch
must be placed in ON. An indicator
light on the switch will illuminate
when the system is turned off. If the
indicator light illuminates when the
RPA is not turned off, it may indicate
a malfunction in the RPA.
Keep the RPA sensors, located on
the rear bumper, free from snow,
ice, and large accumulations of dirt.
Do not clean the sensors with sharp
objects. If the sensors are covered,
it will affect the accuracy of
the RPA.Fuel
GM recommends the use of TOP
TIER detergent gasoline to keep the
engine cleaner and reduce engine
deposits. See www.toptiergas.com
for a list of TOP TIER detergent
gasoline marketers and applicable
countries.
Use regular unleaded gasoline
meeting ASTM specification D4814
with a posted octane rating of 87 or
higher. Do not use gasoline with an
octane rating below 87, as it may
cause engine damage and will lower
fuel economy.Use of Seasonal Fuels
Use summer and winter fuels in the
appropriate season. The fuels
industry automatically modifies the
fuel for the appropriate season.
If fuel is left in the vehicle tank for
long periods of time, driving or
starting could be affected. Drive the
vehicle until the fuel is at one-half
tank or less, then refuel with the
current seasonal fuel.
Prohibited Fuels
Gasolines containing oxygenates
such as ethers and ethanol, as well
as reformulated gasolines, are
available in some cities. If these
gasolines comply with the
previously described specification,
then they are acceptable to use.{Warning
.
Using a fuel other than what
is specified could adversely
affect the emission control
system, and may also affect
the warranty coverage.
(Continued)

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Driving and Operating 171
Warning (Continued)
.Under no circumstances
should either a leaded
gasoline or gasoline with
MMTbe used. Doing so will
damage the catalytic
converter.
. Do not use E85 fuel in your
vehicle. Your vehicle is not
designed to run on E85 fuel.
Using E85 fuel in a vehicle
not specifically designed for
E85 fuel can adversely
damage the emission
control devices and systems
of the vehicle. Damage
caused by such fuel is not
covered by the new vehicle
limited warranty.
Some gasolines, mainly high octane
racing gasolines, can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use
gasolines and/or fuel additives with
MMT as they will reduce spark plug
life and affect emission control system. The malfunction indicator
lamp may turn on. If this occurs, see
your dealer for service.
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in
states adopting California Emissions
Standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance may be
affected. The malfunction indicator
lamp could turn on and the vehicle
may not pass a smog-check test.
See
Malfunction Indicator Lamp
(Check Engine Light) 091. If this
occurs, return to your authorized
dealer for diagnosis. If it is
determined that the condition is
caused by the type of fuel used,
repairs may not be covered by the
vehicle warranty.
Fuels in Foreign
Countries
The U.S., Canada, and Mexico post
fuel octane ratings in anti-knock
index (AKI). For fuel not to use in a
foreign country, see “Prohibited
Fuels” inFuel 0170.
Fuel Additives
To keep fuel systems clean, TOP
TIER detergent gasoline is
recommended. See Fuel0170.
If TOP TIER detergent gasoline is
not available, one bottle of GM Fuel
System Treatment Cleaner added to
the fuel tank at every engine oil
change, can help. GM Fuel System
Treatment Cleaner is the only
gasoline additive recommended by
General Motors. It is available at
your dealer.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
172 Driving and Operating
Filling the Tank
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.. To help avoid injuries to you
and others, read and follow
all the instructions on the
fuel pump island.
. Turn off the engine when
refueling.
. Keep sparks, flames, and
smoking materials away
from fuel.
. Do not leave the fuel pump
unattended.
. Do not use a cell phone
while refueling.
. Do not re-enter the vehicle
while pumping fuel.
. Keep children away from
the fuel pump and never let
children pump fuel.
(Continued)
Warning (Continued)
.Fuel can spray out if the fuel
cap is opened too quickly.
This spray can happen if the
tank is nearly full, and is
more likely in hot weather.
Open the fuel cap slowly
and wait for any hiss noise
to stop, then unscrew the
cap all the way.
The fuel cap is behind a hinged fuel
door on the passenger side of the
vehicle. The fuel door release is
below the instrument panel. To open the fuel-filler door, pull the release.
To lock, close the fuel-filler door
securely.
To remove the fuel cap, turn it
slowly counterclockwise.
While refueling, hang the tethered
fuel cap from the hook on the
fuel door.
{Warning
Overfilling the fuel tank by more
than three clicks of a standard fill
nozzle may cause:
(Continued)

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Driving and Operating 173
Warning (Continued)
.Vehicle performance issues,
including engine stalling and
damage to the fuel system.
. Fuel spills.
. Potential fuel fires.
Be careful not to spill fuel. Wait a
few seconds after you have finished
pumping before removing the
nozzle. Clean fuel from painted
surfaces as soon as possible. See
Exterior Care 0233.
When replacing the fuel cap, turn it
clockwise until it clicks. Make sure
the cap is fully installed.
{Warning
If a fire starts while you are
refueling, do not remove the
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
Caution
If a new fuel cap is needed, be
sure to get the right type of cap
from your dealer. The wrong type
of fuel cap may not fit properly,
may cause the malfunction
indicator lamp to light, and could
damage the fuel tank and
emissions system. See
Malfunction Indicator Lamp
(Check Engine Light) 091.
LOOSE FUEL CAP Warning
Message
The LOOSE FUEL CAP message
displays in the odometer when the
fuel cap is not tightened correctly
after the vehicle has been refueled.
See Fuel System Messages 099.
Failure to tighten the fuel cap
properly after the LOOSE FUEL
CAP warning message is displayed
may cause the malfunction indicator
light to turn on. See Malfunction
Indicator Lamp (Check Engine
Light) 091.
Filling a Portable Fuel
Container
{Warning
Filling a portable fuel container
while it is in the vehicle can cause
fuel vapors that can ignite either
by static electricity or other
means. You or others could be
badly burned and the vehicle
could be damaged. Always:
. Use approved fuel
containers.
. Remove the container from
the vehicle, trunk, or pickup
bed before filling.
. Place the container on the
ground.
. Place the nozzle inside the
fill opening of the container
before dispensing fuel, and
keep it in contact with the fill
opening until filling is
complete.
(Continued)