overheating CHEVROLET EXPRESS CARGO VAN 2017 1.G Owners Manual

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
94 Instruments and Controls
The power outlet is not designed forthe following, and may not workproperly if they are plugged in:
.Equipment with high initial peakwattage, such ascompressor-driven refrigeratorsand electric power tools.
.Other equipment requiring anextremely stable power supply,such asmicrocomputer-controlledelectric blankets and touchsensor lamps.
.Medical equipment.
Cigarette Lighter
If equipped with a cigarette lighter,to heat push it in all the way and letgo. When it is ready for use, it willpop back out by itself.
Do not use the lighter to plug inaccessory devices. Use the poweroutlets provided.
Caution
Holding a cigarette lighter in while
it is heating does not let the
lighter back away from the
heating element when it is hot.
Damage from overheating can
occur to the lighter or heating
element, or a fuse could be
blown. Do not hold a cigarette
lighter in while it is heating.
Ashtrays
If equipped with a removableashtray, it can be placed into thefront floor console cupholder. Openthe cover to use.
Caution
If papers, pins, or other
flammable items are put in the
ashtray, hot cigarettes or other
smoking materials could ignite
them and possibly damage the
vehicle. Never put flammable
items in the ashtray.
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges cansignal that something is wrongbefore it becomes serious enoughto cause an expensive repair orreplacement. Paying attention to thewarning lights and gauges couldprevent injury.
Some warning lights come on brieflywhen the engine is started toindicate they are working. Whenone of the warning lights comes onand stays on while driving, or whenone of the gauges shows there maybe a problem, check the section thatexplains what to do. Waiting to dorepairs can be costly and evendangerous.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
98 Instruments and Controls
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.
Engine Coolant
Temperature Gauge
Metric
English
This gauge shows the enginecoolant temperature.
It also provides an indicator of howhard the vehicle is working. During amajority of the operation, the gaugewill read 100 °C (210 °F) or less.If the vehicle is pulling a load orgoing up hills, it is normal for thetemperature to fluctuate andapproach the 122 °C (250 °F) mark.If the gauge reaches the 125 °C(260 °F) mark, it indicates that thecooling system is working beyondits capacity.
SeeEngine Overheating0230.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
114 Instruments and Controls
conditioning compressor turns backon. You can continue to drive thevehicle.
If this message continues to appear,have the system repaired by yourdealer as soon as possible to avoiddamage to the engine.
ENGINE OVERHEATED IDLE
ENGINE
This message displays when theengine coolant temperature is toohot. Stop and allow the vehicle toidle until it cools down. SeeEngineCoolant Temperature Gauge098.
ENGINE OVERHEATED STOP
ENGINE
This message displays and a chimesounds if the engine cooling systemreaches unsafe temperatures foroperation. Stop and turn off thevehicle as soon as it is safe to do soto avoid severe damage. Thismessage clears when the enginehas cooled to a safe operatingtemperature.
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when theengine oil needs to be changed.When you change the engine oil, besure to reset the CHANGE ENGINEOIL SOON message. SeeEngineOil Life System0221forinformation on how to reset themessage. SeeEngine Oil0219andMaintenance Schedule0297.
ENGINE OIL LOW ADD OIL
If the vehicle has an oil level sensor,this message displays if the oil levelin the vehicle is low. Check the oillevel and correct it as necessary.Yo u m a y n e e d t o l e t t h e v e h i c l e c o o lor warm up and cycle the ignition tobe sure this message clears. SeeEngine Oil0219.
OIL PRESSURE LOW STOP
ENGINE
This message displays if low oilpressure levels occur. Stop thevehicle as soon as safely possibleand do not operate it until the causeof the low oil pressure has been
corrected. Check the oil as soon aspossible and have the vehicleserviced by your dealer. SeeEngineOil0219.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chimesounds when the cooling systemtemperature gets too hot and theengine further enters the enginecoolant protection mode. SeeEngine Overheating0230forfurther information.
This message also displays whenthe engine power is reduced.Reduced engine power can affectthe vehicle's ability to accelerate.If this message is on, but there is noreduction in performance, proceedto your destination. Theperformance may be reduced thenext time the vehicle is driven. Thevehicle may be driven at a reducedspeed while this message is on, butacceleration and speed may bereduced. Anytime this message

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
116 Instruments and Controls
SERVICE PARK ASSIST
This message displays if there is aproblem with the Rear ParkingAssist (RPA) system. Do not usethis system to help you park. SeeParking Assist0197.Seeyourdealer for service.
Ride Control System
Messages
SERVICE STABILITRAK
If the vehicle has StabiliTrak®andthis message displays, it meansthere may be a problem with theStabiliTrak system. If you see thismessage, try to reset the system.Stop; turn off the engine for at least15 seconds; then start the engineagain. If this message still comeson, it means there is a problem. Youshould see your dealer for service.The vehicle is safe to drive,however, you do not have thebenefit of StabiliTrak, so reduceyour speed and drive accordingly.
SERVICE TRACTION
CONTROL
If the vehicle has StabiliTrak, thismessage displays when there is aproblem with the Traction ControlSystem (TCS). When this messagedisplays, the system will not limitwheel spin. Adjust your drivingaccordingly. See your dealer forservice. SeeTr a c t i o n C o n t r o l /Electronic Stability Control0190.
STABILITRAK INITIALIZING
If the vehicle has StabiliTrak, thismessage may display until firstdriving the vehicle and exceeding40 km/h (25 mph) for two minutes.The StabiliTrak system is notfunctional until this message hasturned off. SeeTr a c t i o n C o n t r o l /Electronic Stability Control0190.
TRACTION XX
STABILITRAK XX
If the vehicle has StabiliTrak, thismessage displays when the tractioncontrol and/or StabiliTrak systemshave been turned on or off. Adjustyour driving accordingly. To limitwheel spin and realize the full
benefits of the stabilityenhancement system, you shouldnormally leave StabiliTrak on.However, you should turnStabiliTrak off if the vehicle getsstuck in sand, mud, ice, or snowand you want to rock the vehicle toattempt to free it, or if you aredriving in extreme off-roadconditions and require more wheelspin. SeeIf the Vehicle Is Stuck0171.ToturntheStabiliTraksystem on or off, seeTr a c t i o nControl/Electronic StabilityControl0190.
STABILITRAK OFF may alsodisplay when the stability controlhas been automatically disabled.There are several conditions thatcan cause this message to appear.
.One condition is overheating,which could occur if StabiliTrakactivates continuously for anextended period of time.
.The message also displays if thebrake system warning light is on.SeeBrake System WarningLight0104.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Instruments and Controls 119
GRADE BRAKING ON
This message displays when thegrade braking has been activatedwhile driving on downhill grades.This message will only appear thefirst time the feature is activated inan ignition cycle. SeeTo w / H a u lMode0187,AutomaticTr a n s m i s s i o n0183,andCruiseControl0192.
SERVICE TRANSMISSION
This message displays when thereis a problem with the transmission.See your dealer for service.
TRANSMISSION HOT IDLE
ENGINE
Caution
Do not drive the vehicle while the
transmission fluid is overheating,
or the transmission can be
damaged. This could lead to
costly repairs that would not be
covered by the warranty.
This message displays along with achime if the transmission fluid in thevehicle gets hot. Driving with thetransmission fluid temperature highcan cause damage to the vehicle.Stop the vehicle and let it idle toallow the transmission to cool. Thismessage clears and the chimestops when the fluid temperaturereaches a safe level.
Vehicle Reminder
Messages
ICE POSSIBLE DRIVE
WITH CARE
This message displays when theoutside air temperature is coldenough to create icy roadconditions. Adjust your drivingaccordingly.
Vehicle
Personalization
This vehicle may havecustomization capabilities that allowyou to program certain features toone preferred setting. Customizationfeatures can only be programmed toone setting on the vehicle andcannot be programmed to apreferred setting for two differentdrivers.
All of the customization options maynot be available on your vehicle.Only the options available will bedisplayed on the DIC.
The default settings for thecustomization features were setwhen the vehicle left the factory, butmay have been changed from theirdefault state since then.
The customization preferences areautomatically recalled.
To c h a n g e c u s t o m i z a t i o npreferences, use the followingprocedure.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 169
.Keep the windshield washer fluidreservoir filled.
.Have good tires with propertread depth. SeeTires0252.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or throughmountains is different than drivingon flat or rolling terrain. Tips include:
.Keep the vehicle serviced and ingood shape.
.Check all fluid levels and brakes,tires, cooling system, andtransmission.
.Shift to a lower gear when goingdown steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
(Continued)
Warning (Continued)
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering. Always have the
engine running and the vehicle
in gear.
.Drive at speeds that keep thevehicle in its own lane. Do notswing wide or cross thecenter line.
.Be alert on top of hills;something could be in your lane(e.g., stalled car, accident).
.Pay attention to special roadsigns (e.g., falling rocks area,winding roads, long grades,passing or no-passing zones)and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires andthe road creates less traction orgrip, so drive carefully. Wet ice canoccur at about 0 °C (32 °F) whenfreezing rain begins to fall. Avoiddriving on wet ice or in freezing rainuntil roads can be treated.
For slippery road driving:
.Accelerate gently. Acceleratingtoo quickly causes the wheels tospin and makes the surfaceunder the tires slick.
.Turn on Traction Control. 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.
.Antilock Brake System (ABS)improves vehicle stability duringhard stops, but the brakesshould be applied sooner than

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
204 Driving and Operating
Passing
More passing distance is neededwhen towing a trailer. Thecombination will not accelerate asquickly and is longer so it isnecessary to go much fartherbeyond the passed vehicle beforereturning to the lane.
Backing Up
Hold the bottom of the steeringwheel with one hand. To move thetrailer to the left, move that hand tothe left. To move the trailer to theright, move your hand to the right.Always back up slowly and,if possible, have someoneguide you.
Making Turns
Caution
Making very sharp turns while
trailering could cause the trailer to
come in contact with the vehicle.
The vehicle could be damaged.
Avoid making very sharp turns
while trailering.
When turning with a trailer, makewider turns than normal. Do this sothe trailer will not strike softshoulders, curbs, road signs, trees,or other objects. Avoid jerky orsudden maneuvers. Signal well inadvance.
If the trailer turn signal bulbs burnout, the arrows on the instrumentcluster will still flash for turns. It isimportant to check occasionally tobe sure the trailer bulbs are stillworking.
Driving on Grades
Reduce speed and shift to a lowergearbeforestarting down a long orsteep downgrade. If thetransmission is not shifted down, thebrakes might get hot and no longerwork well.
Vehicles can tow in D (Drive). Shiftthe transmission to a lower gear ifthe transmission shifts too oftenunder heavy loads and/or hillyconditions.
The Tow/Haul Mode may be used ifthe transmission shifts too often.SeeTo w / H a u l M o d e0187.
When towing at high altitude onsteep uphill grades, consider thefollowing: Engine coolant will boil atalowertemperaturethanatnormalaltitudes. If the engine is turned offimmediately after towing at highaltitude on steep uphill grades, thevehicle may show signs similar toengine overheating. To avoid this,let the engine run while parked,preferably on level ground, with thetransmission in P (Park) for a fewminutes before turning the engineoff. If the overheat warning comeson, seeEngine Overheating0230.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
214 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 215California Proposition65 Warning . . . . . . . . . . . . . . . . . 215California PerchlorateMaterials Requirements . . . . . 215Accessories andModifications . . . . . . . . . . . . . . . . 216
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 216Hood . . . . . . . . . . . . . . . . . . . . . . . . . 217Engine CompartmentOverview . . . . . . . . . . . . . . . . . . . . 218Engine Oil . . . . . . . . . . . . . . . . . . . . 219Engine Oil Life System . . . . . . . 221Automatic TransmissionFluid . . . . . . . . . . . . . . . . . . . . . . . . 222Engine Air Cleaner/Filter . . . . . . 225Cooling System . . . . . . . . . . . . . . 226Engine Coolant . . . . . . . . . . . . . . . 227Engine Overheating . . . . . . . . . . 230Engine Fan . . . . . . . . . . . . . . . . . . . 231Power Steering Fluid . . . . . . . . . 232Washer Fluid . . . . . . . . . . . . . . . . . 233Brakes . . . . . . . . . . . . . . . . . . . . . . . 233Brake Fluid . . . . . . . . . . . . . . . . . . . 234
Battery - North America . . . . . . 236Rear Axle . . . . . . . . . . . . . . . . . . . . 236Noise Control System . . . . . . . . 237Starter Switch Check . . . . . . . . . 238Automatic Transmission ShiftLock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 238Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 239Park Brake and P (Park)Mechanism Check . . . . . . . . . . 239Wiper Blade Replacement . . . . 239
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 240
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 240Halogen Bulbs . . . . . . . . . . . . . . . . 240Headlamps . . . . . . . . . . . . . . . . . . . 241Front Turn Signal, Sidemarker,and Parking Lamps . . . . . . . . . 242Ta i l l a m p s . . . . . . . . . . . . . . . . . . . . . 2 4 3Center High-MountedStoplamp (CHMSL) . . . . . . . . . 244License Plate Lamp . . . . . . . . . . 244Replacement Bulbs . . . . . . . . . . . 245
Electrical System
Electrical System Overload . . . 245Fuses and Circuit Breakers . . . 246
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 246Floor Console Fuse Block . . . . 249
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 252All-Season Tires . . . . . . . . . . . . . . 253Winter Tires . . . . . . . . . . . . . . . . . . 253All-Terrain Tires . . . . . . . . . . . . . . . 253Tire Sidewall Labeling . . . . . . . . 254Tire Designations . . . . . . . . . . . . . 256Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 257Tire Pressure . . . . . . . . . . . . . . . . . 260Tire Pressure MonitorSystem . . . . . . . . . . . . . . . . . . . . . . 261Tire Pressure MonitorOperation . . . . . . . . . . . . . . . . . . . 262Tire Inspection . . . . . . . . . . . . . . . . 265Tire Rotation . . . . . . . . . . . . . . . . . 265Dual Tire Rotation . . . . . . . . . . . . 266When It Is Time for NewTires . . . . . . . . . . . . . . . . . . . . . . . . 267Buying New Tires . . . . . . . . . . . . . 268Different Size Tires andWheels . . . . . . . . . . . . . . . . . . . . . . 269Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 270Wheel Alignment and TireBalance . . . . . . . . . . . . . . . . . . . . . 271Wheel Replacement . . . . . . . . . . 271

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 227
Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
The cooling system in the vehicle isfilled with DEX-COOL®enginecoolant. This coolant is designed toremain in the vehicle for 5 years or240 000 km (150,000 mi), whicheveroccurs first.
The following explains the coolingsystem and how to check and addcoolant when it is low. If there is aproblem with engine overheating,seeEngine Overheating0230.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of clean,drinkable water and DEX-COOLcoolant. If using this mixture,nothing else needs to be added.This mixture:
.Gives freezing protection downto✓37 °C (✓34 °F), outsidetemperature.
.Gives boiling protection up to129 °C (265 °F), enginetemperature.
.Protects against rust andcorrosion.
.Will not damage aluminum parts.
.Helps keep the proper enginetemperature.
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants0305.
Never dispose of engine coolant byputting it in the trash, pouring it onthe ground, or into sewers, streams,