light CHEVROLET EXPRESS CARGO VAN 2017 1.G Repair Manual

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
178 Driving and Operating
Operate the engine andtransmission gently to allow theoil to warm up and lubricate allmoving parts.
When the Low Fuel warninglamp is on and the FUELLEVEL LOW message isdisplayed in the DriverInformation Center (DIC), theComputer-Controlled CrankingSystem is disabled to preventpossible vehicle componentdamage. When this happens,hold the ignition switch in theSTART position to continueengine cranking.
Caution
Cranking the engine for long
periods of time, by returning the
ignition to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not startafter 5-10 seconds, especiallyin very cold weather (below✓18 °C or 0 °F), it could beflooded with too muchgasoline. Try pushing theaccelerator pedal all the way tothe floor and holding it there asyou hold the key in START forup to 15 seconds. Wait at least15 seconds between each try,to allow the cranking motor tocool down. When the enginestarts, let go of the key andaccelerator. If the vehicle startsbriefly but then stops again, dothe same thing. This clears theextra gasoline from the engine.Do not race the engineimmediately after starting it.Operate the engine andtransmission gently until the oilwarms up and lubricates allmoving parts.
Fast Idle System
If equipped, this feature is availableonly with cruise control. The manualfast idle switch is operated using thecruise control buttons on the leftside of the steering wheel.
This system can be used toincrease engine idle speedwhenever the following conditionsare met:
.The parking brake is set.
.The brake pedal is not pressed.
.The vehicle must not be movingand the accelerator must not bepressed.
To c o n t r o l t h e f a s t i d l e :
.To e n a b l e t h e F a s t I d l e S y s t e m ,press and release the cruisecontrol on/off button and ensurethat the switch indicator lightis lit.
.Press and release the cruisecontrol SET- button. Enginespeed will be held atapproximately 1200 rpm.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 187
2. Press the +/✓buttons on theshift lever, to select the desiredrange of gears for currentdriving conditions.
When M (Manual Mode) is selectedanumberdisplaysintheDICnexttothe M indicating the current gear.
This number is the highest gear thatcan be used. However, the vehiclecan automatically shift to lowergears as it adjusts to drivingconditions. This means that allgears below that number areavailable. When 5 (Fifth) is selected,1(First) through 5(Fifth) gears areautomatically shifted by the vehicle,but 6 (Sixth) cannot be used untilthe +/✓button on the steeringcolumn lever is used to change tothe gear.
Grade Braking is not available whenRange Selection Mode is active.SeeTo w / H a u l M o d e0187.
While using Range Selection Mode,cruise control and the Tow/HaulMode can be used.
Caution
Spinning the tires or holding the
vehicle in one place on a hill
using only the accelerator pedal
may damage the transmission.
The repair will not be covered by
the vehicle warranty. If you are
stuck, do not spin the tires. When
stopping on a hill, use the brakes
to hold the vehicle in place.
Low Traction Mode
Low Traction Mode can assist invehicle acceleration when roadconditions are slippery. While thevehicle is at a stop, select thesecond gear range using RangeSelection Mode. This will limittorque to the wheels after it detectswheel slip, preventing the tires fromspinning.
Tow/Haul Mode
If equipped, Tow/Haul Mode adjuststhe transmission shift pattern toreduce shift cycling, providingincreased performance, vehiclecontrol, and transmission coolingwhen towing or hauling heavy loads.
Turn the Tow/Haul Mode on and offby pressing the button on theinstrument panel. When Tow/Haul ison, a light on the instrument clusterwill come on.
SeeTo w / H a u l M o d e L i g h t0105.
Also see“To w / H a u l M o d e”underTo w i n g E q u i p m e n t0210.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
188 Driving and Operating
Tow/Haul Mode Grade Braking
To w / H a u l M o d e G r a d e B r a k i n g i sonly enabled while the Tow/HaulMode is selected and the vehicle isnot in the Range Selection Mode.See“To w / H a u l M o d e”listedpreviously andManual Mode0186.To w / H a u l M o d e G r a d e B r a k i n gassists in maintaining desiredvehicle speeds when driving ondownhill grades by using the engineand transmission to slow thevehicle.
To d i s a b l e o r e n a b l e To w / H a u l M o d eGrade Braking within the currentignition key cycle, press and holdthe Tow/Haul button forthree seconds. A DIC message willbe displayed. SeeTr a n s m i s s i o nMessages011 8.
SeeTo w i n g E q u i p m e n t0210.
For other forms of grade braking,seeAutomatic Transmission0183andCruise Control0192.
Brakes
Antilock Brake
System (ABS)
This vehicle has an Antilock BrakeSystem (ABS), an advancedelectronic braking system that helpsprevent a braking skid.
When the vehicle begins to driveaway, ABS checks itself.Amomentarymotororclickingnoisemay be heard while this test is goingon, and it may even be noticed thatthe brake pedal moves a little. Thisis normal.
If there is a problem with ABS, thiswarning light stays on. SeeAntilockBrake System (ABS) WarningLight0104.
If driving safely on a wet road and itbecomes necessary to slam on thebrakes and continue braking toavoid a sudden obstacle, acomputer senses the wheels areslowing down. If one of the wheelsis about to stop rolling, the computerwill separately work the brakes ateach wheel.
ABS can change the brake pressureto each wheel, as required, fasterthan any driver could. This can helpyou steer around the obstacle whilebraking hard.
As the brakes are applied, thecomputer keeps receiving updateson wheel speed and controlsbraking pressure accordingly.
Remember: ABS does not changethe time needed to get a foot up tothe brake pedal or always decreasestopping distance. If you get tooclose to the vehicle in front of you,there will not be enough time toapply the brakes if that vehiclesuddenly slows or stops. Alwaysleave enough room up ahead tostop, even with ABS.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 189
Using ABS
Do not pump the brakes. Just holdthe brake pedal down firmly and letABS work. You may hear the ABSpump or motor operating and feelthe brake pedal pulsate. This isnormal.
Braking in Emergencies
ABS allows you to steer and brakeat the same time. In manyemergencies, steering can helpmore than even the very bestbraking.
Parking Brake
To s e t t h e p a r k i n g b r a k e , h o l d t h eregular brake pedal, then pushdown the parking brake pedal.
If the ignition is on, the brakesystem warning light will come on.
To r e l e a s e t h e p a r k i n g b r a k e , h o l dthe regular brake pedal down. Pullthe handle, located just above theparking brake pedal, with theparking brake symbol, to release theparking brake.
If the ignition is on when the parkingbrake is released, the brake systemwarning light will go off.
Caution
Driving with the parking brake on
can overheat the brake system
and cause premature wear or
damage to brake system parts.
Make sure that the parking brake
is fully released and the brake
warning light is off before driving.
If you are towing a trailer and areparking on a hill, seeDrivingCharacteristics and TowingTips0202.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
190 Driving and Operating
Ride Control Systems
Traction Control/
Electronic Stability
Control
The vehicle may have a vehiclestability enhancement system calledStabiliTrak. It is an advancedcomputer controlled system thatassists the driver with directionalcontrol of the vehicle in difficultdriving conditions.
StabiliTrak activates when thecomputer senses a discrepancybetween the intended path and thedirection the vehicle is actuallytraveling. StabiliTrak selectivelyapplies braking pressure at any oneof the vehicle's brakes to assist thedriver with keeping the vehicle onthe intended path.
When the vehicle is started andbegins to move, the systemperforms several diagnostic checksto ensure there are no problems.The system may be heard or feltwhile it is working. This is normaland does not mean there is a
problem with the vehicle. Thesystem should initialize before thevehicle reaches 40 km/h (25 mph).In some cases, it may takeapproximately 3.2 km (2 mi) ofdriving before the system initializes.
The Traction Control System (TCS)/StabiliTrak indicator light comes onin the instrument cluster when thesystem requires service.
When StabiliTrak activates, theTCS/StabiliTrak indicator lightflashes in the instrument cluster.This also occurs when TCS isactivated.
SeeTr a c t i o n C o n t r o l S y s t e m ( T C S ) /StabiliTrak®Light0105.
For your safety, the system can onlybe disabled when the vehicle speedis less than 40 km/h (25 mph).
Pressgon the instrument panel
once to turn off the TCS. Theappropriate message is displayed inthe DIC. SeeRide Control SystemMessages011 6.
Press and holdgto turn off
StabiliTrak and TCS. The StabiliTrakOFF light illuminates and the

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
194 Driving and Operating
.Vehicles with a 6-speedautomatic transmission haveCruise Grade Braking to helpmaintain driver selected speed.
Cruise Grade Braking is enabledwhen the vehicle is started andcruise control is active. It is notenabled in Range Selection Mode.It assists in maintaining driverselected speed when driving ondownhill grades by using the engineand transmission to slow thevehicle.
To d i s a b l e a n d e n a b l e C r u i s e G r a d eBraking for the current ignition keycycle, press and hold the Tow/Haulbutton for three seconds. A DICmessage displays. SeeTr a n s m i s s i o n M e s s a g e s011 8.
When the brakes are applied thecruise control is disengaged.
Ending Cruise Control
There are four ways to end cruisecontrol:
.Step lightly on the brake pedal.
.Press[.
.Shift the transmission toN(Neutral).
.To t u r n o f f c r u i s e c o n t r o l ,
pressI.
Erasing Speed Memory
The cruise control set speed is
erased from memory ifIis
pressed or if the vehicle isturned off.
Driver Assistance
Systems
Rear Vision
Camera (RVC)
If equipped, the RVC system isdesigned to help the driver whenbacking up by displaying a view ofthe area behind the vehicle.
{Warning
The camera(s) do not display
children, pedestrians, bicyclists,
crossing traffic, animals, or any
other object outside of the
cameras’field of view, below the
bumper, or under the vehicle.
Shown distances may be different
from actual distances. Do not
drive or park the vehicle using
only these camera(s). Always
check behind and around the
vehicle before driving. Failure to
use proper care may result in
injury, death, or vehicle damage.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 195
Vehicles without Navigation
System
When the vehicle is on and shiftedinto R (Reverse), the video imageappears on the inside rearviewmirror. The video image disappearsafter the vehicle is shifted out ofR(Reverse).
Vehicles with Navigation
System
When the vehicle is shifted intoR(Reverse), the video imageappears on the navigation screen.After a delay, the navigation screendisplays the previous screen afterthe vehicle is shifted out ofR(Reverse).
The delay that is received aftershifting out of R (Reverse) isapproximately 10 seconds. Return tothe previous screen sooner byperforming one of the following:
.Press a hard key on thenavigation system.
.Shift into P (Park).
.Reach a vehicle speed of8km/h (5mph).
Symbols and Guidelines
The navigation system may have afeature that allows for viewingparking assist symbols and/orguidelines on the navigation screenwhile using the RVC. The RearParking Assist (RPA) system mustnot be disabled to use the cautionsymbols. If RPA has been disabledand the symbols have been turnedon, the Rear Parking AssistSymbols Unavailable error messagemay display. SeeParkingAssist0197.
The symbols appear near objectsdetected by the RPA system. Thesymbol may cover the object whenviewing the navigation screen. Theguideline overlay can help the driveralign the vehicle when backing intoaparkingspot.
To t u r n t h e s y m b o l s o r g u i d e l i n e s o nor off:
1. Shift into P (Park).
2. Press MENU to enter theconfigure menu options. Turnthe Multifunction knob until theDisplay feature is highlighted
and press the Multifunctionknob; or press the Displayscreen button.
3. Select the Rear CameraOptions screen button. TheRear Camera Options screendisplays.
4. Touch the Symbols orGuidelines screen button. Thescreen button will behighlighted when the featureis on.
RVC Location
The camera is next to the licenseplate.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
196 Driving and Operating
This following shows the field ofview that the camera provides.
1. View displayed by thecamera
1. View displayed by thecamera
2. Corners of the rear bumper
Displayed images may be further orcloser than they appear. The areadisplayed is limited and objects thatare close to either corner of thebumper or under the bumper do notdisplay.
When the System Does Not
Seem To Work Properly
The RVC system might not workproperly or display a clear image if:
.It is dark.
.The sun or the beam ofheadlamps is shining directlyinto the camera lens.
.Ice, snow, mud, or anything elsebuilds up on the camera lens.Clean the lens, rinse it withwater, and wipe it with a softcloth.
.The back of the vehicle is in anaccident. The position andmounting angle of the cameracan change or the camera canbe affected. Be sure to have the
camera and its position andmounting angle checked at yourdealer.
The RVC system display in therearview mirror may turn off or notappear as expected due to one ofthe following conditions. If thisoccurs, the left indicator light on themirror will flash.
.Aslowflashmayindicatealossof video signal, or no videosignal present during the reversecycle.
.Afastflashmayindicatethatthedisplay has been on for themaximum allowable time duringareversecycle,orthedisplayhas reached an OverTe m p e r a t u r e l i m i t .
The fast flash conditions areused to protect the video devicefrom high temperatureconditions. Once conditionsreturn to normal, the device willreset and the indicator will stopflashing.

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
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)