2017 CHEVROLET EXPRESS CARGO VAN check engine

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
102 Instruments and Controls
Center (DIC) can also appear. SeeBattery Voltage and ChargingMessages011 2for moreinformation. This light could indicatethat there are problems with agenerator drive belt, or that there isan electrical problem. Have itchecked right away. If the vehiclemust be driven a short distance withthe light on, turn off accessories,such as the radio and airconditioner.
Malfunction Indicator
Lamp (Check Engine
Light)
This light is part of the vehicle’semission control on-boarddiagnostic system. If this light is onwhile the engine is running, amalfunction has been detected andthe vehicle may require service. Thelight should come on to show that itis working when the ignition is inON/RUN and the engine is notrunning. SeeIgnitionPositions0176.
Malfunctions are often indicated bythe system before any problem isnoticeable. Being aware of the lightand seeking service promptly whenit comes on may prevent damage.
Caution
If the vehicle is driven continually
with this light on, the emission
control system may not work as
well, the fuel economy may be
lower, and the vehicle may not
run smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty.
Caution
Modifications to the engine,
transmission, exhaust, intake,
or fuel system, or the use of
replacement tires that do not
meet the original tire
specifications, can cause this light
to come on. This could lead to
costly repairs not covered by the
vehicle warranty. This could also
affect the vehicle’sabilitytopass
an Emissions Inspection/
Maintenance test. See
Accessories and
Modifications0216.
If the light is flashing :Amalfunction has been detected thatcould damage the emission controlsystem and increase vehicleemissions. Diagnosis and servicemay be required.
To h e l p p r e v e n t d a m a g e , r e d u c evehicle speed and avoid hardaccelerations and uphill grades.

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If towing a trailer, reduce theamount of cargo being hauled assoon as possible.
If the light continues to flash, find asafe place to park. Turn the vehicleoff and wait at least 10 secondsbefore restarting the engine. If thelight is still flashing, follow theprevious guidelines and see yourdealer for service as soon aspossible.
If the light is on steady :Amalfunction has been detected.Diagnosis and service may berequired.
Check the following:
.Alooseormissingfuelcapmaycause the light to come on. SeeFilling the Tank0200.Afewdriving trips with the capproperly installed may turn thelight off.
.Poor fuel quality can causeinefficient engine operation andpoor driveability, which may goaway once the engine is warmedup. If this occurs, change thefuel brand. It may require at
least one full tank of the properfuel to turn the light off. SeeFuel0198.
If the light remains on, see yourdealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an EmissionsInspection/Maintenance test, thetest equipment will likely connect tothe vehicle's Data LinkConnector (DLC).
The DLC is under the instrumentpanel to the left of the steeringwheel. Connecting devices that arenot used to perform an EmissionsInspection/Maintenance test or toservice the vehicle may affectvehicle operation. SeeAdd-OnElectrical Equipment0212.Seeyour dealer if assistance is needed.
The vehicle may not passinspection if:
.The light is on when the engineis running.
.The light does not come onwhen the ignition is in ON/RUNwhile the engine is off.
.Critical emission control systemshave not been completelydiagnosed. If this happens, thevehicle would not be ready forinspection and might requireseveral days of routine drivingbefore the system is ready forinspection. This can happen ifthe 12-volt battery has recentlybeen replaced or run down, or ifthe vehicle has been recentlyserviced.
See your dealer if the vehicle willnot pass or cannot be made readyfor the test.

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have antilock brakes and there is aproblem with the regular brakes.SeeBrake System WarningLight0104.
Tow/Haul Mode Light
For vehicles with the Tow/HaulMode feature, this light comes onwhen the Tow/Haul Mode has beenactivated.
SeeTo w / H a u l M o d e0187.
StabiliTrak®OFF Light
This light comes on briefly whilestarting the engine. If it does not,have the vehicle serviced by yourdealer.
This light comes on when theStabiliTrak system is turned off.If StabiliTrak is off, the TractionControl System (TCS) is also off.
If the StabiliTrak and TCS are off,the system does not assist incontrolling the vehicle. Turn on theTCS and the StabiliTrak systemsand the warning light turns off.
SeeTr a c t i o n C o n t r o l / E l e c t r o n i cStability Control0190.
Traction Control System
(TCS)/StabiliTrak®Light
This light comes on briefly when theengine is started.
If the light does not come on, havethe vehicle serviced by your dealer.If the system is working normally,the indicator light turns off.
If the light is on and not flashing, theTCS and potentially the StabiliTraksystem have been disabled.ADriverInformationCenter(DIC)message may display. Check theDIC messages to determine whichfeature(s) is no longer functioningand whether the vehicle requiresservice. SeeRide Control SystemMessages011 6.
If the light is on and flashing, theTCS and/or the StabiliTrak systemis actively working.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
106 Instruments and Controls
SeeTr a c t i o n C o n t r o l / E l e c t r o n i cStability Control0190.
Tire Pressure Light
For vehicles with the Tire PressureMonitor System (TPMS), this lightcomes on briefly when the engine isstarted. It provides informationabout tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more ofthe tires are significantlyunderinflated.
ADriverInformationCenter(DIC)tire pressure message may alsodisplay. SeeTire Messages011 8.Stop as soon as possible, andinflate the tires to the pressure valueshown on the Tire and LoadingInformation label. SeeTirePressure0260.
When the Light Flashes First andThen Is On Steady
If the light flashes for about a minuteand then stays on, there may be aproblem with the TPMS. If theproblem is not corrected, the lightwill come on at every ignition cycle.SeeTire Pressure MonitorOperation0262.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
Add oil if required, but if the oil
level is within the operating range
and the oil pressure is still low,
have the vehicle serviced. Always
follow the maintenance schedule
for changing engine oil.
This light should come on briefly asthe engine is started. If it does notcome on, have the vehicle servicedby your dealer.
If the light comes on and stays on, itmeans that oil is not flowing throughthe engine properly. The vehiclecould be low on oil and might havesome other system problem. Seeyour dealer.

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Low Fuel Warning Light
English Shown, Metric Similar
This light comes on for a fewseconds when the ignition is turnedon as a check to indicate it isworking. If it does not come on,have it fixed.
The low fuel warning light comes onand a chime sounds when thevehicle is low on fuel. The light turnsoff when fuel is added to thefuel tank.
SeeDriver Information Center(DIC)0108.
Security Light
The security light should come onbriefly as the engine is started. If itdoes not come on, have the vehicleserviced by your dealer. If thesystem is working normally, theindicator light turns off.
If the light stays on and the enginedoes not start, there could be aproblem with the theft-deterrentsystem. SeeImmobilizerOperation033.
High-Beam On Light
This light comes on when thehigh-beam headlamps are in use.
SeeHeadlamp High/Low-BeamChanger0126.
Cruise Control Light
This light comes on when the cruisecontrol is set.
This light goes out when the cruisecontrol is canceled. SeeCruiseControl0192.

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When the remaining oil life is low,the CHANGE ENGINE OIL SOONmessage will appear on the display.SeeEngine Oil Messages011 4.Yo u s h o u l d c h a n g e t h e o i l a s s o o nas possible. SeeEngine Oil0219.In addition to the engine oil lifesystem monitoring the oil life,additional maintenance isrecommended in the MaintenanceSchedule in this manual. SeeMaintenance Schedule0297.
Remember, you must reset the OILLIFE yourself after each oil change.It will not reset itself. Also, becareful not to reset the OIL LIFEaccidentally at any time other thanwhen the oil has just been changed.It cannot be reset accurately untilthe next oil change. To reset theengine oil life system, seeEngineOil Life System0221.
Park Assist
If the vehicle has the Rear Parking
Assist (RPA) system, pressTuntil
PA R K A S S I S T d i s p l a y s . T h i sdisplay allows the system to beturned on or off. Once in thisdisplay, press to select between ON
or OFF. The RPA systemautomatically turns back on aftereach vehicle start. When the RPAsystem is turned off and the vehicleis shifted out of P (Park), the DICwill display the PARK ASSIST OFFmessage as a reminder that thesystem has been turned off. SeeObject Detection System Messages011 5andParking Assist0197.
Units
PressTuntil UNITS displays. This
display allows you to select betweenmetric or English units ofmeasurement. Once in this display,
pressVto select between METRIC
or ENGLISH units.
Tire Pressure
If the vehicle has the Tire PressureMonitor System (TPMS), thepressure for each tire can be viewedin the DIC. The tire pressure will beshown in either kilopascals (kPa) orpounds per square inch (psi).
PressTuntil the DIC displays
FRONT TIRES PSI (kPa) LEFT ##
RIGHT ##. PressTagain until the
DIC displays REAR TIRESPSI (kPa) LEFT ## RIGHT ##.
If a low tire pressure condition isdetected by the system whiledriving, a message advising you tocheck the pressure in a specific tirewill appear in the display. SeeTirePressure011 8andTireMessages011 8.
If the tire pressure display showsdashes instead of a value, theremay be a problem with the vehicle.If this consistently occurs, see yourdealer for service.
Engine Hours
PressTuntil ENGINE HOURS
displays. This display shows thetotal number of hours the enginehas run.
Relearn Tire Positions
The vehicle may have this display.To a c c e s s t h i s d i s p l a y, t h e v e h i c l emust be in P (Park). If the vehiclehas the Tire Pressure MonitorSystem (TPMS), after rotating thetires or after replacing a tire or

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
112 Instruments and Controls
sensor, the system must re-learn thetire positions. To re-learn the tirepositions, seeTire Pressure MonitorSystem0261.SeeTire Inspection0265,Tire Rotation0265andTireMessages011 8.
Change Compass Zone
The vehicle may have this feature.To c h a n g e t h e c o m p a s s z o n ethrough the DIC, seeCompass090.
Calibrate Compass
The vehicle may have this feature.The compass can be manuallycalibrated. To calibrate the compassthrough the DIC, seeCompass090.
Blank Display
This display shows no information.
Vehicle Messages
Messages displayed on the DICindicate the status of the vehicle orsome action may be needed tocorrect a condition. Multiplemessages may appear one afteranother.
The messages that do not requireimmediate action can beacknowledged and cleared by
pressingV(Set/Reset).
The messages that requireimmediate action cannot be cleareduntil that action is performed.
All messages should be takenseriously and clearing the messagedoes not correct the problem.
The following are the possiblemessages and some informationabout them.
If the vehicle has a diesel engine,see the Duramax dieselsupplement.
Battery Voltage and
Charging Messages
SERVICE BATTERY
CHARGING SYSTEM
On some vehicles, this messagedisplays if there is a problem withthe battery charging system. Undercertain conditions, the chargingsystem light may also turn on in theinstrument cluster. SeeChargingSystem Light0101.Drivingwiththisproblem could drain the battery.Turn off all unnecessaryaccessories. Have the electricalsystem checked as soon aspossible. See your dealer.
Brake System Messages
SERVICE BRAKE SYSTEM
This message displays along withthe brake system warning light ifthere is a problem with the brakesystem. SeeBrake System WarningLight0104.Ifthismessageappears, stop as soon as possibleand turn off the vehicle. Restart thevehicle and check for the message

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Instruments and Controls 113
on the DIC display. If the messageis still displayed or appears againwhen you begin driving, the brakesystem needs service as soon aspossible. See your dealer.
Compass Messages
CALIBRATING: DRIVE IN
CIRCLES
This message displays whencalibrating the compass. Drive thevehicle in circles at less than 8 km/h(5 mph) to complete the calibration.SeeCompass090for moreinformation.
CALIBRATION COMPLETE
This message displays when thecompass calibration is complete.SeeCompass090for moreinformation.
Door Ajar Messages
CARGO DOOR OPEN
This message displays and a chimesounds if the cargo door is openwhile the ignition is in ON/RUN.Turn off the vehicle and check the
cargo door. Restart the vehicle andcheck for the message on the DICdisplay.
DRIVER DOOR OPEN
This message displays and a chimesounds if the driver door is not fullyclosed and the vehicle is in a drivegear. Stop and turn off the vehicle,check the door for obstructions, andclose the door again. Check to seeif the message still appears onthe DIC.
LEFT REAR DOOR OPEN
On some vehicles, this messagedisplays and a chime sounds if thedriver side rear door is not fullyclosed and the vehicle is in a drivegear. Stop and turn off the vehicle,check the door for obstructions, andclose the door again. Check to seeif the message still appears onthe DIC.
PASSENGER DOOR OPEN
This message displays and a chimesounds if the passenger door is notfully closed and the vehicle is in adrive gear. Stop and turn off the
vehicle, check the door forobstructions, and close the dooragain. Check to see if the messagestill appears on the DIC.
RIGHT REAR DOOR OPEN
On some vehicles, this messagedisplays and a chime sounds if thepassenger side rear door is not fullyclosed and the vehicle is in a drivegear. Stop and turn off the vehicle,check the door for obstructions, andclose the door again. Check to seeif the message still appears onthe DIC.
Engine Cooling System
Messages
ENGINE HOT A/C (Air
Conditioning) OFF
This message displays when theengine coolant becomes hotter thanthe normal operating temperature.SeeEngine Coolant TemperatureGauge098.Toavoidaddedstrainon a hot engine, the air conditioningcompressor automatically turns off.When the coolant temperaturereturns to normal, the air