maintenance CHEVROLET EXPRESS CARGO VAN 2017 1.G User Guide

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.

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 217
Keep a record with all parts receiptsand list the mileage and the date ofany service work performed. SeeMaintenance Records0307.
Caution
Even small amounts of
contamination can cause damage
to vehicle systems. Do not allow
contaminants to contact the fluids,
reservoir caps, or dipsticks.
Hood
To o p e n t h e h o o d :
1. Pull the handle with this symbolon it. It is in front of the driverside door frame near the floor.
2. Go to the front of the vehicleand lift up the secondary hoodrelease, which is underneaththe middle of the hood.
3. Lift the hood, release the hoodprop from its retainer, and putthe hood prop into the slot inthe hood.
If the vehicle has an underhoodlamp, it will automatically come onand stay on until the hood is closed.
Before closing the hood, be sure allof the filler caps are on properly.Then lift the hood to relievepressure on the hood prop. Removethe hood prop from the slot in thehood and return the prop to itsretainer. Let the hood down andclose it firmly.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
222 Vehicle Care
system might indicate that an oilchange is not necessary for up to ayear. The engine oil and filter mustbe changed at least once a yearand, at this time, the system mustbe reset. Your dealer has trainedservice people who will perform thiswork and reset the system. It is alsoimportant to check the oil regularlyover the course of an oil draininterval and keep it at the properlevel.
If the system is ever resetaccidentally, the oil must bechanged at 5 000 km (3,000 mi)since the last oil change.Remember to reset the oil lifesystem whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever theengine oil is changed so that thesystem can calculate the nextengine oil change. To reset thesystem:
1. Turn the ignition key to ON/RUN with the engine off.
2. Fully press and release theaccelerator pedal slowly threetimes within five seconds.
3. Turn the key to LOCK/OFF.
If the CHANGE ENGINE OIL SOONmessage comes back on when thevehicle is started, the engine oil lifesystem has not reset. Repeat theprocedure.
Automatic Transmission
Fluid
When to Check and Change
Automatic Transmission Fluid
It is usually not necessary to checkthe transmission fluid level. The onlyreason for fluid loss is atransmission leak or overheatedtransmission. If a small leak issuspected, use the followingprocedures to check the fluid level.However, if there is a large leak, itmay be necessary to have thevehicle towed to a dealer and haveit repaired before driving the vehiclefurther.
Change the fluid and filter at theintervals listed inMaintenanceSchedule0297,andbesuretousethe transmission fluid listed inRecommended Fluids andLubricants0305.
How to Check Automatic
Transmission Fluid
Because this operation can bedifficult, it is recommended to havethis check done at your dealer,which can monitor the transmissiontemperature. The transmission fluidlevel increases with temperature. Toobtain a highly accurate fluid levelcheck, the transmission temperaturemust be measured.
If it is decided to check the fluidlevel, be sure to follow all theinstructions here, or a false readingon the dipstick may occur.
Caution
To o m u c h o r t o o l i t t l e f l u i d c a n
damage the transmission. Too
much can mean that some of the
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 225
Caution
Use of the incorrect automatic
transmission fluid may damage
the vehicle, and the damage may
not be covered by the vehicle
warranty. Always use the
automatic transmission fluid listed
inRecommended Fluids and
Lubricants0305.
.After adding fluid, recheck thefluid level as described under“How to Check AutomaticTransmission Fluid,”earlier inthis section.
.When the correct fluid level isobtained, push the dipstick backin all the way; then flip thehandle down to lock the dipstickin place.
Engine Air Cleaner/Filter
The air cleaner/filter assembly is onthe front of the engine compartmenton the driver side of the vehicle.SeeEngine CompartmentOverview0218.
When to Inspect the Engine AirCleaner/Filter
For intervals on changing andinspecting the engine air filter, seeMaintenance Schedule0297.
How to Inspect the Engine AirCleaner/Filter
Do not start the engine or have theengine running with the engine airfilter housing open. Before removingthe engine air filter, make sure thatthe engine air filter housing andnearby components are free of dirtand debris. Remove the engine airfilter. Lightly tap and shake theengine air filter (away from thevehicle) to release dust and dirt.Inspect the engine air filter fordamage, and replace if damaged.Do not clean the engine air filter orcomponents with water orcompressed air.
6.0L V8 Engine Shown, 4.8L
V8 Engine Similar
1. Retaining Clips
2. Housing Base
3. Housing Cover
To i n s p e c t a n d r e p l a c e t h e f i l t e r :
1. Unlock the two retainingclips (1) on the sides of thehousing cover (3) and on thehousing base (2) and pull thecover off.
2. Remove the air cleaner/filterfrom the housing base. Takecare to dislodge as little dirt aspossible.