fuel CHEVROLET EXPRESS CARGO VAN 2017 1.G Owner's Manual

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 179
When the fast idle is active, theDriver Information Center (DIC) willdisplay FAST IDLE ON.
One of the following actions will turnoff the fast idle:
.Pressing the brake.
.Selecting the cruise controlcancel button.
.Releasing the parking brake.
.Moving the transmission shiftlever out of P (Park) orN(Neutral).
.Selecting the cruise control on/off button when it waspreviously on.
.Pressing the cruise control SET-button a second time.
.Pressing the accelerator morethan one-quarter of theway down.
.Turning the ignition switch to theLOCK/OFF position.
Engine Heater
If the vehicle has a diesel engine,see the Duramax dieselsupplement.
The engine coolant heater canprovide easier starting and betterfuel economy during enginewarm-up in cold weather conditionsat or below✓18 °C (0 °F). Vehicleswith an engine coolant heatershould be plugged in at least fourhours before starting. An internalthermostat in the plug end of thecord may exist which will preventengine coolant heater operation attemperatures above✓18 °C (0 °F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap theelectrical cord.
The cord for the engine coolantheater is on the driver side ofthe engine compartment and isattached to the hose for thepower steering reservoir.
Check the heater cord fordamage. If it is damaged, donot use it. See your dealer forareplacement.Inspectthecord for damage yearly.
3. Plug it into a normal, grounded11 0 - v o l t A C o u t l e t .
{Warning
Improper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
.Plug the cord into athree-prong electrical utilityreceptacle that is protectedby a ground fault detectionfunction. An ungroundedoutlet could cause anelectric shock.
.Use a weatherproof,heavy-duty, 15 amp-ratedextension cord if needed.Failure to use therecommended extensioncord in good operating
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
184 Driving and Operating
{Warning
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, the vehicle
can move suddenly. You or others
could be injured. To be sure the
vehicle will not move, even when
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
SeeShifting Into Park0180and
Driving Characteristics and
To w i n g T i p s0202.
R:Use this gear to back up.
Caution
Shifting to R (Reverse) while the
vehicle is moving forward could
damage the transmission. The
(Continued)
Caution (Continued)
repairs would not be covered by
the vehicle warranty. Shift to
R(Reverse) only after the vehicle
is stopped.
To r o c k t h e v e h i c l e b a c k a n d f o r t h t oget out of snow, ice, or sand withoutdamaging the transmission, seeIfthe Vehicle Is Stuck0171.
N:In this position, the engine doesnot connect with the wheels.To r e s t a r t w h e n y o u a r e a l r e a d ymoving, use N (Neutral) only. Also,use N (Neutral) when the vehicle isbeing towed.
{Warning
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
Yo u c o u l d l o s e c o n t r o l a n d h i t
(Continued)
Warning (Continued)
people or objects. Do not shift
into a drive gear while the engine
is running at high speed.
Caution
Shifting out of P (Park) or
N(Neutral) with the engine
running at high speed may
damage the transmission. The
repairs would not be covered by
the vehicle warranty. Be sure the
engine is not running at high
speed when shifting the vehicle.
D:This position is for normaldriving. It provides the best fueleconomy. If you need more powerfor passing, and you are:
.Going less than about 55 km/h(35 mph), push the acceleratorpedal about halfway down.
.Going about 55 km/h (35 mph) ormore, push the accelerator allthe way down.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
198 Driving and Operating
.Atrailerisattachedtothevehicle, or a bicycle or an objecthanging out of the rear doorduring the current or last drivecycle. RPA will return to normaloperation after it is determinedthe object is removed. Thiscould take a few drive cycles.
.Atowbarisattachedtothevehicle.
Other conditions may affect systemperformance, such as vibrationsfrom a jackhammer or thecompression of air brakes on a verylarge truck.
Fuel
For diesel engine vehicles, see“Fuel for Diesel Engines”in theDuramax diesel supplement.
GM recommends the use of TOPTIER Detergent Gasoline to keepthe engine cleaner and reduceengine deposits. Seewww.toptiergas.com for a list of TOPTIER Detergent Gasoline marketersand applicable countries.
If the vehicle has a yellow fuel capor a yellow sticker on the fuel door,E85 or FlexFuel can be used. SeeE85 or FlexFuel0199.
Use regular unleaded gasolinemeeting ASTM specification D4814with a posted octane rating of 87 orhigher. Do not use gasoline with aposted octane rating of less than 87,as this may cause engine knock andwill lower fuel economy.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:
.For vehicles which are notFlexFuel, fuel labeledgreater than 15% ethanol byvolume, such as mid-levelethanol blends (16–50%ethanol), E85, or FlexFuel.
.Fuel with any amount ofmethanol, methylal, andaniline. These fuels cancorrode metal fuel systemparts or damage plastic andrubber parts.
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 199
Caution (Continued)
.Fuel containing metals suchas methylcyclopentadienylmanganese tricarbonyl(MMT), which can damagethe emissions controlsystem and spark plugs.
.Fuel with a posted octanerating of less than therecommended fuel. Usingthis fuel will lower fueleconomy and performance,and may decrease the life ofthe emissions catalyst.
California Fuel
Requirements
If the vehicle is certified to meetCalifornia Emissions Standards, it isdesigned to operate on fuels thatmeet California specifications. Seethe underhood emission controllabel. If this fuel is not available instates adopting California EmissionsStandards, the vehicle will operatesatisfactorily on fuels meetingfederal specifications, but emission
control system performance may beaffected. The malfunction indicatorlamp could turn on and the vehiclemay not pass a smog-check test.SeeMalfunction Indicator Lamp(Check Engine Light)0102.Ifthisoccurs, return to your authorizeddealer for diagnosis. If it isdetermined that the condition iscaused by the type of fuel used,repairs may not be covered by thevehicle warranty.
Fuels in Foreign
Countries
The U.S., Canada, and Mexico postfuel octane ratings in anti-knockindex (AKI). For fuel not to use in aforeign country, see“ProhibitedFuels”inFuel0198.
Fuel Additives
To k e e p f u e l s y s t e m s c l e a n , T O PTIER Detergent Gasoline isrecommended. SeeFuel0198.
If TOP TIER Detergent Gasoline isnot available, one bottle of GM FuelSystem Treatment Cleaner added tothe fuel tank at every engine oil
change, can help. GM Fuel SystemTreatment Cleaner is the onlygasoline additive recommended byGeneral Motors. It is available atyour dealer.
If your vehicle is able to use E85 orFlexFuel, GM Fuel SystemTreatment Cleaner - FlexFuel is theonly recommended additive for use.Do not use any other additives withan E85 or FlexFuel vehicle. SeeE85 or FlexFuel0199.
E85 or FlexFuel
Vehicles with a yellow fuel cap canuse either unleaded gasoline or fuelcontaining up to 85% ethanol (E85).All other vehicles should use onlythe unleaded gasoline as describedinFuel0198.
The use of E85 or FlexFuel isencouraged when the vehicle isdesigned to use it. E85 or FlexFuelis made from renewable sources.
To h e l p l o c a t e f u e l s t a t i o n s t h a tcarry E85 or FlexFuel, the U.S.Department of Energy has an

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
200 Driving and Operating
alternative fuels website. Seewww.afdc.energy.gov/afdc/locator/stations.
E85 or FlexFuel should meet ASTMSpecification D 5798 or CAN/CGSB–3.512 in Canada. Do not usethe fuel if the ethanol content isgreater than 85%. Fuel mixtures thatdo not meet ASTM or CGSBspecifications can affect driveabilityand could cause the malfunctionindicator lamp to come on.
After refueling, the vehiclecalculates the composition of thefuel. It is not recommended torepeatedly switch between fuels.If fuels are switched frequently, addas much fuel as possible and do notadd less than 11 L (3 gal) whenrefueling. Drive at least 11 km (7 mi)immediately after refueling to allowthe vehicle to adapt to the change inethanol concentration.
Because E85 or FlexFuel has lessenergy per liter (gallon) thangasoline, the vehicle will need to berefilled more often. SeeFilling theTa n k0200.
Caution
Some additives are not
compatible with E85 or FlexFuel
and can harm the vehicle's fuel
system. Do not add anything to
E85 or FlexFuel. Damage caused
by additives would not be covered
by the vehicle warranty.
Caution
Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
That damage would not be
covered under the vehicle
warranty.
Filling the Tank
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
.To h e l p a v o i d i n j u r i e s t o y o uand others, read and followall the instructions on thefuel pump island.
.Turn off the engine whenrefueling.
.Keep sparks, flames, andsmoking materials awayfrom fuel.
.Do not leave the fuel pumpunattended.
.Do not use a cell phonewhile refueling.
.Do not re-enter the vehiclewhile pumping fuel.
.Keep children away fromthe fuel pump and never letchildren pump fuel.
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 201
Warning (Continued)
.Fuel can spray out if the fuelcap is opened too quickly.This spray can happen if thetank is nearly full, and ismore likely in hot weather.Open the fuel cap slowlyand wait for any hiss noiseto stop, then unscrew thecap all the way.
The fuel cap is behind a hinged fueldoor on the driver side of thevehicle.
If the vehicle has E85 fuel capability,the fuel cap will be yellow and statethat E85 or gasoline can be used.SeeE85 or FlexFuel0199.
To r e m o v e t h e f u e l c a p , t u r n i tslowly counterclockwise.
While refueling, hang the tetheredfuel cap from the hook on thefuel door.
{Warning
Overfilling the fuel tank by more
than three clicks of a standard fill
nozzle may cause:
.Vehicle performance issues,including engine stalling anddamage to the fuel system.
.Fuel spills.
.Potential fuel fires.
Be careful not to spill fuel. Wait afew seconds after you have finishedpumping before removing thenozzle. Clean fuel from paintedsurfaces as soon as possible. SeeExterior Care0288.
When replacing the fuel cap, turn itclockwise until it clicks. Make surethe cap is fully installed. Thediagnostic system can determine ifthe fuel cap has been left off orimproperly installed. This wouldallow fuel to evaporate into theatmosphere. SeeMalfunctionIndicator Lamp (Check EngineLight)0102.
{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
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
202 Driving and Operating
Caution (Continued)
indicator lamp to light, and could
damage the fuel tank and
emissions system. See
Malfunction Indicator Lamp
(Check Engine Light)0102.
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 fuelcontainers.
.Remove the container fromthe vehicle, trunk, or pickupbed before filling.
(Continued)
Warning (Continued)
.Place the container on theground.
.Place the nozzle inside thefill opening of the containerbefore dispensing fuel, andkeep it in contact with the fillopening until filling iscomplete.
.Fill the container no morethan 95% full to allow forexpansion.
.Do not smoke, lightmatches, or use lighterswhile pumping fuel.
.Avoid using cell phones orother electronic devices.
Trailer Towing
General Towing
Information
Only use towing equipment that hasbeen designed for the vehicle.Contact your dealer or traileringdealer for assistance with preparingthe vehicle for towing a trailer. Readthe entire section before towing atrailer.
For towing a disabled vehicle, seeTo w i n g t h e V e h i c l e0286.Fortowing the vehicle behind anothervehicle such as a motor home, seeRecreational Vehicle Towing0286.
Driving Characteristics
and Towing Tips
Driving with a Trailer
When towing a trailer:
.Become familiar with the stateand local laws that apply totrailer towing.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
206 Driving and Operating
Caution
Pulling a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To pull a trailer
correctly, follow the advice in this
section and see your dealer for
important information about
towing a trailer with the vehicle.
To i d e n t i f y t h e t r a i l e r i n g c a p a c i t y o fthe vehicle, read the information in“Weight of the Trailer”following.
Trailering is different than justdriving the vehicle by itself.Trailering means changes inhandling, acceleration, braking,durability, and fuel economy.Successful, safe trailering takescorrect equipment, and it has to beused properly.
The following information has manytime-tested, important trailering tipsand safety rules. Many of these areimportant for your safety and that of
your passengers. So please readthis section carefully before pulling atrailer.
Weight of the Trailer
Safe trailering requires monitoringthe weight, speed, altitude, roadgrades, outside temperature, andhow frequently the vehicle is used topull a trailer are all important. Takeinto consideration any specialequipment on the vehicle, and theamount of tongue weight the vehiclecan carry. See“Weight of the TrailerTo n g u e”later in this section.
Maximum trailer weight is calculatedassuming only the driver is in thetow vehicle and it has all therequired trailering equipment. Theweight of additional optionalequipment, passengers,and cargo inthe tow vehicle must be subtractedfrom the maximum trailer weight.
Use the following chart to determinehow much the vehicle can weigh,based upon the vehicle model andoptions.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
212 Driving and Operating
Pressing this button turns on and offthe Tow/Haul Mode.
This indicator light on the instrumentcluster comes on when the Tow/Haul Mode is on.
To w / H a u l i s a f e a t u r e t h a t a s s i s t swhen pulling a heavy trailer or alarge or heavy load. SeeTo w / H a u lMode0187.
To w / H a u l i s d e s i g n e d t o b e m o s teffective when the vehicle andtrailer combined weight is at least75 percent of the vehicle GrossCombined Weight Rating (GCWR).See“Weight of the Trailer”inTr a i l e rTo w i n g0205.Tow/Haulismostuseful under the following drivingconditions:
.When pulling a heavy trailer or alarge or heavy load throughrolling terrain.
.When pulling a heavy trailer or alarge or heavy load instop-and-go traffic.
.When pulling a heavy trailer or alarge or heavy load in busyparking lots where improved lowspeed control of the vehicle isdesired.
Operating the vehicle in Tow/HaulMode when lightly loaded or with notrailer at all will not cause damage.However, there is no benefit to theselection of Tow/Haul when thevehicle is unloaded. Such aselection when unloaded may resultin unpleasant engine andtransmission driving characteristicsand reduced fuel economy. Tow/Haul is recommended only whenpulling a heavy trailer or a large orheavy load.
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction Indicator
Lamp (Check Engine Light)
0102.Adeviceconnectedtothe
DLC—such as an aftermarket
fleet or driver-behavior tracking
device—may interfere with
vehicle systems. This could affect
vehicle operation and cause a
crash. Such devices may also
access information stored in the
vehicle’ssystems.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 231
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
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam is Coming from
the Engine Compartment
If an engine overheat warning isdisplayed but no steam can be seenor heard, the problem may not be
too serious. Sometimes the enginecan get a little too hot when thevehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.To w s a t r a i l e r . S e e“Driving onGrades”underTr a i l e rTo w i n g0205.
If the overheat warning is displayedwith no sign of steam:
1. Turn the air off.
2. Turn the heater on to thehighest temperature and to thehighest fan speed. Open thewindows as necessary.
3. When it is safe to do so, pull offthe road, shift to P (Park) orN(Neutral) and let theengine idle.
If the engine coolant temperaturegauge is no longer in the overheatzone or an overheat warning nolonger displays, the vehicle can bedriven. Continue to drive the vehicleslowly for about 10 minutes. Keep asafe vehicle distance from the
vehicle in front. If the warning doesnot come back on, continue to drivenormally and have the coolingsystem checked for proper fill andfunction.
If the warning continues, pull over,stop, and park the vehicleright away.
If there is still no sign of steam,push down the accelerator until theengine speed is about twice as fastas normal idle speed for at leastthree minutes while parked. If thewarning is still on, turn off theengine until it cools down.
If the decision is made not to lift thehood, get service help right away.
Engine Fan
The vehicle has a clutched enginecooling fan. When the clutch isengaged, the fan spins faster toprovide more air to cool the engine.In most everyday driving conditions,the fan is spinning slower and theclutch is not fully engaged. Thisimproves fuel economy and reducesfan noise. Under heavy vehicleloading, trailer towing, and/or high