2017 CHEVROLET EXPRESS CARGO VAN maintenance

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Instruments and Controls 103
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.

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.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Instruments and Controls 111
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
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
158 Climate Controls
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . 158Rear Heating System . . . . . . . . . 160Rear Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 161
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 163
Maintenance
Service . . . . . . . . . . . . . . . . . . . . . . . 163
Climate Control Systems
The heating, cooling, and ventilation for the vehicle can be controlled withthis system.
Vehicles without Air Conditioning
1. Fan Control
2. Temperature Control
3. Air Delivery Mode Control
9:Turn the knob clockwise orcounterclockwise to increase ordecrease the fan speed.
9:Turns the system off.
Te m p e r a t u r e C o n t r o l :Turn theknob clockwise or counterclockwiseto increase or decrease thetemperature inside the vehicle.
Air Delivery Mode Control :Turnthe knob clockwise orcounterclockwise to change thecurrent airflow mode.
H:Air is directed to the instrumentpanel outlets.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Climate Controls 163
2:Air is directed to the flooroutlets.
Be sure to keep the area under thefront seats clear of any objects sothat the air inside of the vehicle cancirculate effectively.
For information on how to use themain climate control system, seeClimate Control Systems0158.Forinformation on ventilation, seeAirVents0163.
Air Vents
Use the outlets located near thecenter and on the sides of theinstrument panel to change thedirection of airflow.
Operation Tips
.Clear away any ice, snow orleaves from the air inlets at thebase of the windshield that mayblock the flow of air into thevehicle.
.Use of non-GM approved hooddeflectors may adversely affectthe performance of the system.
.Keep the path under the frontseats clear of objects to helpcirculate the air inside of thevehicle more effectively.
Maintenance
Service
All vehicles have a label underhoodthat identifies the refrigerant used inthe vehicle. The refrigerant systemshould only be serviced by trainedand certified technicians. The airconditioning evaporator shouldnever be repaired or replaced byone from a salvage vehicle.It should only be replaced by a newevaporator to ensure proper andsafe operation.
During service, all refrigerantsshould be reclaimed with properequipment. Venting refrigerantsdirectly to the atmosphere is harmfulto the environment and may alsocreate unsafe conditions based oninhalation, combustion, frostbite,or other health-based concerns.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
166 Driving and Operating
Drunk Driving
Death and injury associated withdrinking and driving is a globaltragedy.
{Warning
Drinking and then driving is very
dangerous. Your reflexes,
perceptions, attentiveness, and
judgment can be affected by even
asmallamountofalcohol.You
can have a serious—or even
fatal—collision if you drive after
drinking.
Do not drink and drive or ride with
adriverwhohasbeendrinking.
Ride home in a cab; or if you are
with a group, designate a driver
who will not drink.
Control of a Vehicle
Braking, steering, and acceleratingare important factors in helping tocontrol a vehicle while driving.
Braking
Braking action involves perceptiontime and reaction time. Deciding topush the brake pedal is perceptiontime. Actually doing it isreaction time.
Average driver reaction time isabout three-quarters of a second. Inthat time, a vehicle moving at100 km/h (60 mph) travels 20 m(66 ft), which could be a lot ofdistance in an emergency.
Helpful braking tips to keep in mindinclude:
.Keep enough distance betweenyou and the vehicle in frontof you.
.Avoid needless heavy braking.
.Keep pace with traffic.
If the engine ever stops while thevehicle is being driven, brakenormally but do not pump thebrakes. Doing so could make thepedal harder to push down. If theengine stops, there will be somepower brake assist but it will beused when the brake is applied.
Once the power assist is used up, itcan take longer to stop and thebrake pedal will be harder to push.
Steering
Hydraulic Power Steering
Yo u r v e h i c l e h a s h y d r a u l i c p o w e rsteering. It may requiremaintenance. SeePower SteeringFluid0232.
If power steering assist is lostbecause the engine stops orbecause of a system malfunction,the vehicle can be steered but mayrequired increased effort. See yourdealer if there is a problem.
Caution
If the steering wheel is turned
until it reaches the end of its
travel, and is held in that position
for more than 15 seconds,
damage may occur to the power
steering system and there may be
loss of power steering assist.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/6/16
Driving and Operating 205
If parking the rig on a hill:
1. Press the brake pedal, but donot shift into P (Park) yet. Turnthe wheels into the curb iffacing downhill or into traffic iffacing uphill.
2. Have someone place chocksunder the trailer wheels.
3. When the wheel chocks are inplace, release the regularbrakes until the chocks absorbthe load.
4. Reapply the brake pedal. Thenapply the parking brake andshift into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brakepedal.
2. Start the engine.
3. Shift into a gear.
4. Release the parking brake.
5. Let up on the brake pedal.
6. Drive slowly until the trailer isclear of the chocks.
7. Stop and have someone pickup and store the chocks.
Maintenance when Trailer
Towing
The vehicle needs service moreoften when pulling a trailer. SeeMaintenance Schedule0297.Things that are especially importantin trailer operation are automatictransmission fluid, engine oil, axlelubricant, belts, cooling system, andbrake system. It is a good idea toinspect these before and duringthe trip.
Check periodically to see that allhitch nuts and bolts are tight.
Trailer Towing
If the vehicle has a diesel engine,see the Duramax dieselsupplement.
{Warning
The driver can lose control when
pulling a trailer if the correct
equipment is not used or the
vehicle is not driven properly. For
example, if the trailer is too heavy
or the trailer brakes are
inadequate for the load, the
vehicle may not stop as expected.
The driver and passengers could
be seriously injured. The vehicle
may also be damaged; the
resulting repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed.
Ask your dealer for advice and
information about towing a trailer
with the vehicle.