check engine CHEVROLET CITY EXPRESS 2018 Owner's Guide

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
11683523) - 2018 - CRC - 7/10/17
Vehicle Care 189
Check the coolant level in the
reservoir when the engine is cold.
If the coolant level is below the MIN
level, add coolant to the MAX level.
If the reservoir is empty, check the
coolant level in the radiator when
the engine is cold. If there is
insufficient coolant in the radiator, fill
the radiator with coolant up to the
filler opening and also add it to the
reservoir up to the MAX level.
The vehicle contains long life
coolant. The life expectancy of the
factory-fill coolant is 168,000 km
(105,000 miles) or seven years.
Mixing any other type of coolant or
the use of non-distilled water willreduce the life expectancy of the
factory-fill coolant. Refer to the
Recommended Fluids and
Lubricants
0257 for more details.
The engine coolant reservoir is a
pressurized tank. When installing
the cap, tighten.
If the cooling system frequently
requires coolant, have it checked by
your dealer.
Changing Engine Coolant
A dealer can change the engine
coolant. The service procedure can
be found in the service manual. See
Service Publications Ordering
Information 0272.
Improper servicing can result in
reduced heater performance and
engine overheating.
{Warning
. To avoid the danger of
being scalded, never
change the coolant when
the engine is hot.
(Continued)
Warning (Continued)
.Never remove the radiator
or engine coolant reservoir
cap when the engine is hot.
Serious burns could be
caused by high pressure
fluid escaping from the
radiator.
. Avoid direct skin contact
with used coolant. If skin
contact is made, wash
thoroughly with soap or
hand cleaner as soon as
possible.
. Keep coolant out of the
reach of children and pets.
Engine coolant must be disposed of
properly. Check your local
regulations.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
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190 Vehicle Care
Engine Overheating
The vehicle has an engine coolant
temperature warning light on the
instrument cluster to warn of engine
overheating. SeeEngine Coolant
Temperature Warning Light 096.
If the decision is made not to lift the
hood when this warning appears,
but instead get service help right
away, see Roadside Assistance
Program 0267.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, the fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
See if the engine cooling fan speed
increases when idle speed is
doubled by pushing the accelerator
pedal down. If it does not, the
vehicle needs service. Turn off the
engine.Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the (Continued)
Warning (Continued)
engine if it overheats, and get out
of the vehicle until the engine
is cool.
Overheated Engine
Protection
Operating Mode
The engine has an engine
protection mode to reduce the
chance of damage if the coolant
temperature goes too high (for
example, when climbing steep
grades in high temperature with
heavy loads, such as when towing a
trailer). When the engine
temperature reaches a certain level:
.The engine coolant temperature
warning light will illuminate.
. Engine power may be reduced.
. The air conditioning cooling
function may be automatically
turned OFF for a short time (the
blower will continue to operate).

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 191
Engine power and under certain
conditions, vehicle speed will
decrease. Vehicle speed can be
controlled with the accelerator
pedal, but the vehicle may not
accelerate at the desired speed.
The transmission will downshift or
upshift as it reaches prescribed shift
points. You can also shift manually.
As driving conditions change and
engine coolant temperature is
reduced, vehicle speed can be
increased using the accelerator
pedal, and air conditioning cooling
function will automatically be turned
back ON.
If:1. The engine coolant temperature is not reduced.
2. The air conditioning cooling function does not turn
back ON.
3. The engine oil pressure low/ engine coolant temperature
high warning light illuminates,
this may indicate a malfunction.
Move the vehicle off the road in
a safe area and allow the engine to cool. If after checking
the oil and coolant, the oil
pressure low/engine coolant
temperature high warning light
remains on, do not continue to
drive. Call your dealer.
The malfunction indicator light may
also come on. If only it remains on,
you do not need to have the vehicle
towed, but have it inspected soon
by your dealer. For additional
information, see Malfunction
Indicator Lamp (Check Engine
Light) 091.
Washer Fluid
What to Use
When the vehicle needs windshield
washer fluid, read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the reservoir is full. See Engine
Compartment Overview 0181 for
reservoir location.
Caution
. Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
(Continued)

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 193
in many other ways if the wrong
replacement brake parts are
installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir
is filled with DOT 3 brake fluid. See
Engine Compartment Overview
0181 for the location of the
reservoir.
There are only two reasons why the
brake fluid level in the reservoir
might go down:
. The brake fluid level goes down
because of normal brake lining
wear. When new linings are
installed, the fluid level goes
back up. .
A fluid leak in the brake
hydraulic system can also cause
a low fluid level. Have the brake
hydraulic system fixed, since a
leak means that sooner or later
the brakes will not work well.
Do not top off the brake fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are
installed. Add or remove brake fluid,
as necessary, only when work is
done on the brake hydraulic system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You
or others could be burned, and
the vehicle could be damaged.
Add brake fluid only when work is
done on the brake hydraulic
system. See “Checking Brake
Fluid” in this section. Refer to the Maintenance Schedule
to determine when to check the
brake fluid. See
Maintenance
Schedule 0246.
Checking Brake Fluid
Check brake fluid by looking at the
brake fluid reservoir. See Engine
Compartment Overview 0181.
The fluid level should be above
MIN. If it is not, have the brake
hydraulic system checked to see if
there is a leak.

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Vehicle Care 199
Fuses and Circuit
Breakers
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of fires caused by electrical
problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating. Spare fuses are provided and can
be found in the passenger
compartment fuse box.
Engine Compartment
Fuse Block
The fuse block is in the engine
compartment of the vehicle.
Remove the cover by pushing the
tab and lifting the cover up.
Fusible Links
If the electrical equipment does not
operate and fuses are in good
condition, check the fusible links.
If any of these fusible links are
melted, replace with only Genuine
GM parts.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.

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Vehicle Care 229
Caution
If any accessories are left on or
plugged in during the jump
starting procedure, they could be
damaged. The repairs would not
be covered by the vehicle
warranty. Whenever possible, turn
off or unplug all accessories on
either vehicle when jump starting.
3. Turn off the ignition on both vehicles. Unplug unnecessary
accessories from the cigarette
lighter or the accessory power
outlet. Turn off the radio and all
lamps that are not needed.
This will avoid sparks and help
save both batteries. And it
could save the radio!
4. Open the hoods and locate the positive (+) and negative (−)
terminal locations of the other
vehicle.
{Warning
Using a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded.
Use a flashlight if you need more
light.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{Warning
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running. 5. Check that the jumper cables
do not have loose or missing
insulation. If they do, you could
get a shock. The vehicles
could be damaged too.
Before you connect the cables,
here are some basic things you
should know. Positive (+) will
go to positive (+) or to a remote
positive (+) terminal if
equipped. Negative (−) will go
to an unpainted metal part or to
a remote negative (−) terminal
if equipped.
Do not connect positive (+) to
negative (−) or you will get a
short that would damage the
battery and possibly other parts
too. Do not connect the
negative (−) cable to the
negative (−) terminal on the
dead battery because this can
cause sparks.
6. Connect the red positive (+) cable to the positive (+)
terminal (1) of the dead battery.
Use a remote positive (+)
terminal if equipped. Do not let
the other end touch metal.

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
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242 Service and Maintenance
Service and
Maintenance
General Information
General Information . . . . . . . . . . 242
Maintenance Schedule
Maintenance Schedule . . . . . . . 246
Special Application Services
Special ApplicationServices . . . . . . . . . . . . . . . . . . . . 254
Additional Maintenance
and Care
Additional Maintenanceand Care . . . . . . . . . . . . . . . . . . . . 254
Recommended Fluids,
Lubricants, and Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 257
Maintenance Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . 258
Maintenance Records
Maintenance Records . . . . . . . . 259
General Information
Maintenance Requirements
Some regular maintenance is
essential to maintain the vehicle’s
mechanical condition, as well as its
emissions and engine performance.
It is the owner ’s responsibility to
make sure that the scheduled
maintenance, as well as general
maintenance, is performed.
As the vehicle owner, you are the
only one who can ensure that your
vehicle receives proper
maintenance. You are a vital link in
the maintenance chain.
General Maintenance
General maintenance includes
those items that should be checked
during normal day-to-day operation.
They are essential for proper
vehicle operation. It is your
responsibility to perform these
procedures regularly as prescribed. Performing general maintenance
checks requires minimal mechanical
skill and only a few general
automotive tools.
These checks or inspections can be
done by yourself, a qualified
technician, or, if you prefer, your
dealer.
Scheduled Maintenance
The maintenance items listed in this
section are required to be serviced
at regular intervals. However, under
severe driving conditions, additional
or more frequent maintenance will
be required.
Where to go for Service
If maintenance service is required or
your vehicle appears to malfunction,
have the systems checked and
serviced. It is recommended that
you visit your dealer for this service.
Chevrolet technicians are
well-trained specialists and are kept
up to date with the latest service
information through technical
bulletins, service tips, and training
programs.

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Service and Maintenance 243
You can be confident that your
dealer’s service department can
perform the service needed to meet
the maintenance requirements on
your vehicle.
General Maintenance
During the normal day-to-day
operation of the vehicle, general
maintenance should be performed
regularly as prescribed in this
section. If you detect any unusual
sounds, vibrations, or smells, be
sure to check for the cause or have
your dealer do it promptly. In
addition, it is recommended that you
visit your dealer if you think that
repairs are required.
When performing any checks or
maintenance work, see Doing Your
Own Service Work 0178.
Explanation of General
Maintenance Items
Additional information on the
following items with * is found under
“Vehicle Checks” in the Vehicle
Care section of this manual. Outside the Vehicle
The maintenance items listed here
should be performed from time to
time, unless otherwise specified.
Doors and engine hood* :
Check
that the doors and engine hood
operate properly. Also ensure that
all latches lock securely. Lubricate
hinges, latches, latch pins, rollers,
and links if necessary.
Make sure that the secondary latch
keeps the hood from opening when
the primary latch is released.
When driving in areas using road
salt or other corrosive materials,
check lubrication frequently.
Lamps* : Clean the headllamps on
a regular basis. Make sure that the
headlamps, stoplamps, taillamps,
turn signal lamps, and other lights
are all operating properly and
installed securely. Also check
headlamp aim. Road wheel nuts (lug nuts) :
When checking the tires, make sure
no wheel nuts are missing, and
check for any loose wheel nuts.
Tighten if necessary.
Tire rotation* :
Tires should be
rotated every 8 000 km (5,000 mi).
Tires* : Check the pressure with a
gauge often and always prior to long
distance trips. If necessary, adjust
the pressure in all tires, including
the spare, to the pressure specified.
Check carefully for damage, cuts,
or excessive wear.
Tire Pressure Monitoring System
(TPMS) transmitter components :
Replace the TPMS transmitter
grommet seal, valve core, and cap
when the tires are replaced due to
wear or age.
Wheel alignment and balance : If
the vehicle pulls to either side while
driving on a straight and level road,
or if you detect uneven or abnormal
tire wear, there may be a need for
wheel alignment. If the steering

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Service and Maintenance 245
Windshield wiper and washer* :
Check that the wipers and washer
operate properly and that the wipers
do not streak.
Under the Hood and Vehicle
The maintenance items listed here
should be checked periodically (for
example, each time you check the
engine oil or refuel).
Battery* :Check the fluid level in
each cell. The fluid should be at the
bottom of the filler opening. Vehicles
operated in high temperatures or
under severe conditions require
frequent checks of the battery fluid
level.
Care should be taken to avoid
situations that can lead to potential
battery discharge and potential
no-start conditions such as:
. Installation or extended use of
electronic accessories that
consume battery power when
the engine is not running (phone
chargers, GPS, DVD
players, etc.). .
Vehicle is not driven regularly
and/or only driven short
distances.
In these cases, the battery may
need to be charged to maintain
battery health.
Brake fluid level* : Make sure that
the brake fluid level is between the
MAX and MIN lines on the reservoir.
Engine coolant level* : Check the
coolant level when the engine
is cold.
Engine drive belts : Make sure the
drive belts are not frayed, worn,
cracked, or oily.
Engine oil level* : Check the level
after parking the vehicle on a level
spot and turning off the engine. Wait
more than 15 minutes for the oil to
drain back into the oil pan.
Exhaust system : Make sure there
are no loose supports, cracks,
or holes. If the sound of the exhaust
seems unusual or there is a smell of
exhaust fumes, immediately have
the exhaust system inspected. It is
recommended that you see your dealer for this service. For additional
information, see
Engine Exhaust
0 149.
Fluid leaks : Check under the
vehicle for fuel, oil, water, or other
fluid leaks after the vehicle has
been parked for a while. Water
dripping from the air conditioner
after use is normal. If you notice any
leaks or if fuel fumes are evident,
check for the cause and have it
corrected immediately.
Radiator and hoses : Check the
front of the radiator and clean off
any dirt, insects, leaves, etc., that
may have accumulated. Make sure
the hoses have no cracks,
deformation, rot, or loose
connections.
Underbody : The underbody is
frequently exposed to corrosive
substances such as those used on
icy roads or to control dust. It is very
important to remove these
substances, otherwise rust may
form on the floor pan, frame, fuel
lines, and around the exhaust
system. At the end of winter, the
underbody should be thoroughly

Chevrolet City Express Owner Manual (GMNA-Localizing-U.S./Canada-
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246 Service and Maintenance
flushed with plain water, being
careful to clean those areas where
mud and dirt may accumulate. For
additional information,Exterior Care
0 233.
Windshield washer fluid* : Check
that there is adequate fluid in the
reservoir.Maintenance
Schedule
Explanation of Scheduled
Maintenance Items
The following descriptions are
provided to give you a better
understanding of the scheduled
maintenance items that should be
regularly checked or replaced. The
maintenance schedule indicates at
which mileage/time intervals each
item requires service.
In addition to scheduled
maintenance, your vehicle requires
that some items be checked during
normal day-to-day operation. For
additional information, refer to
“General Maintenance” in this
section.
Items marked with * are
recommended for reliable vehicle
operation. You are not required to
perform maintenance on these
items in order to maintain the
warranties that come with your
vehicle. Other maintenance items
and intervals are required. When applicable, additional
information can be found under
“Vehicle Checks”
in the Vehicle
Care section of this manual.
Chevrolet does not advocate the
use of non-OEM approved
aftermarket flushing systems and
strongly advises against performing
these services on a Chevrolet
product. Many of the aftermarket
flushing systems use non-OEM
approved chemicals or solvents, the
use of which has not been validated
by Chevrolet.
For recommended fuel, lubricants,
fluids, grease, and refrigerant, refer
to Recommended Fluids and
Lubricants 0257.
Emission Control System
Maintenance
Drive belts* : Check engine drive
belts for wear, fraying, or cracking
and for proper tension. Replace any
damaged drive belts.