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
220 Vehicle Care
checking a cold engine prior tostarting. Remove the dipstickand check the level.
.If unable to wait two hours, theengine must be off for at least15 minutes if the engine iswarm, or at least 30 minutes ifthe engine is not warm. Pull outthe dipstick, wipe it with a cleanpaper towel or cloth, then push itback in all the way. Remove itagain, keeping the tip down, andcheck the level.
When to Add Engine Oil
If the oil is below the cross-hatchedarea at the tip of the dipstick andthe engine has been off for at least15 minutes, add 1 L (1 qt) of therecommended oil and then recheckthe level. See“Selecting the RightEngine Oil”later in this section foran explanation of what kind of oil to
use. For engine oil crankcasecapacity, seeCapacities andSpecifications0309.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that you
have an oil level above the
operating range, i.e., the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine could
be damaged. You should drain
out the excess oil or limit driving
of the vehicle and seek a service
professional to remove the
excess amount of oil.
SeeEngine Compartment Overview0218for the location of the engineoil fill cap.
Add enough oil to put the levelsomewhere in the proper operatingrange. Push the dipstick all the wayback in when through.
Selecting the Right Engine Oil
Selecting the right engine oildepends on both the proper oilspecification and viscosity grade.SeeRecommended Fluids andLubricants0305.
Specification
Ask for and use engine oils thatmeet the dexos1™specification.Engine oils that have beenapproved by GM as meeting thedexos1 specification are markedwith the dexos1 approved logo. Seewww.gmdexos.com.

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Vehicle Care 221
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.
Viscosity Grade
Use SAE 5W-30 viscosity gradeengine oil.
Cold Temperature Operation: In anarea of extreme cold, where thetemperature falls below✓29 °C(✓20 °F), an SAE 0W-30 oil may beused. An oil of this viscosity gradewill provide easier cold starting forthe engine at extremely lowtemperatures. When selecting an oilof the appropriate viscosity grade, itis recommended to select an oil ofthe correct specification. See“Specification”earlier in this section.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. Therecommended oils meeting thedexos1 specification are all that isneeded for good performance andengine protection.
Engine oil system flushes are notrecommended and could causeengine damage not covered by thevehicle warranty.
What to Do with Used Oil
Used engine oil contains certainelements that can be unhealthy foryour skin and could even causecancer. Do not let used oil stay onyour skin for very long. Clean yourskin and nails with soap and water,or a good hand cleaner. Wash orproperly dispose of clothing or ragscontaining used engine oil. See themanufacturer's warnings about theuse and disposal of oil products.
Used oil can be a threat to theenvironment. If you change yourown oil, be sure to drain all the oilfrom the filter before disposal. Neverdispose of oil by putting it in the
trash or pouring it on the ground,into sewers, or into streams orbodies of water. Recycle it by takingit to a place that collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer systemthat indicates when to change theengine oil and filter. This is basedon a combination of factors whichinclude engine revolutions, enginetemperature, and miles driven.Based on driving conditions, themileage at which an oil change isindicated can vary considerably. Forthe oil life system to work properly,the system must be reset every timethe oil is changed.
When the system has calculatedthat oil life has been diminished, itindicates that an oil change isnecessary. A CHANGE ENGINEOIL SOON message comes on. SeeEngine Oil Messages011 4.Change the oil as soon as possiblewithin the next 1 000 km (600 mi).It is possible that, if driving underthe best conditions, the oil life

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)

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Vehicle Care 223
Caution (Continued)
fluid could come out and fall on
hot engine parts or exhaust
system parts, starting a fire. Too
little fluid could cause the
transmission to overheat. Be sure
to get an accurate reading if
checking the transmission fluid.
Wait at least 30 minutes with theengine off, before checking thetransmission fluid level if the vehiclehas been driven:
.In hot weather, when outsidetemperatures are above 32 °C(90 °F).
.The vehicle is heavily loaded.
.At high speed for quite a while inhot weather.
.In heavy traffic and hot weather.
.While pulling a trailer.
After driving under these conditions,ahotcheckcanbeperformed.Thefluid should be hot, which is 71 °C to93 °C (160 °F to 200 °F).
Acoldfluidlevelcheckcanbeperformed after the vehicle hasbeen sitting for eight hours or morewith the engine off, but this is usedonly as a reference. Let the enginerun at idle for five minutes if theoutside temperature is between 15 °Cto32°C(60°Fto90°F).Shouldthe fluid level be low during this coldcheck, the fluid must be checkedwarm or hot before adding fluid.If the outside temperature is colderthan 15 °C (60 °F) or hotter than 32 °C(90°F),acoldcheckcannotbeperformed.
Awarmfluidlevelcheckcanbeperformed by driving the vehicleunder lightly loaded conditions andoutside temperatures between 10 °Cto 27 °C (50 °F to 80 °F). Thevehicle should be driven for at least24 km (15 mi) before performing awarm check. Checking the fluidwarm or hot will give a moreaccurate reading of the fluid levelthan a cold check.
Because the vehicle is equippedwith a high-efficiency air-to-oilcooler, the transmission fluidtemperature may not reach the
required hot fluid level checkingtemperature under normal lightlyloaded driving vehicle conditions.
Checking the Fluid Level
Prepare the vehicle:
1. Park the vehicle on a levelplace. Keep the enginerunning.
2. With the parking brake applied,place the shift lever in P (Park).
3. With a foot on the brake pedal,move the shift lever througheach gear range, pausing forabout three seconds in eachrange. When M is reached,move the selector from M1through M3. Then, position theshift lever in P (Park).
4. Let the engine run at idle fortwo minutes or more.
Then, without shutting off theengine, use the steps that follow.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
224 Vehicle Care
The transmission dipstick is nearthe center of the enginecompartment and will be labeledwith the graphic shown.
SeeEngine Compartment Overview0218for more information onlocation.
1. COLD Range
2. WARM Range
3. HOT Range
1. Flip the handle up, pull out thedipstick, and wipe it with aclean rag or paper towel.
2. Push it back in all the way, waitthree seconds, and pull it backout again.
3. Check both sides of thedipstick, and read the lowerlevel. The fluid level must be inthe COLD (1) range for a coldcheck, transmissiontemperature 27 °C to 32 °C(80 °F to 90 °F); between theCOLD (1) and HOT (3) rangefor a WARM (2) check, 50 °C to60 °C (122 °F to 140 °F); or inthe HOT (3) cross-hatchedrange for a hot check, 71 °C to93 °C (160 °F to 200 °F). Besure to keep the dipstickpointed down to get anaccurate reading.
4. If the fluid level is in theacceptable range, push thedipstick back in all the way;then flip the handle down tolock the dipstick in place.
How to Add Automatic
Transmission Fluid
Refer toRecommended Fluids andLubricants0305to determine whatkind of transmission fluid to use.
1. WARM Range
2. HOT Range
Using a funnel, add fluid down thetransmission dipstick tube only afterchecking the transmission fluidwhile it is warm or hot. A cold checkis used only as a reference. If thefluid level is low, add only enough ofthe proper fluid to bring the level upto the middle of the WARM (1) orHOT (2) range depending on theambient temperature and priordriving conditions. Refer to“How toCheck Automatic TransmissionFluid”earlier in this section forinstructions on driving to achievewarm or hot transmission fluid.It does not take much fluid,generally less than 0.5 L (1 pt). Donot overfill.

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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.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
226 Vehicle Care
3. Clean the air cleaner/filtersealing surface andhousing base.
4. Install the engine air cleaner/filter by aligning the arrow onone side of the air cleaner/filterend cap with the arrow on topof the housing base.
5. Install the housing cover byaligning the arrow on top of thecover to the arrow on top of thehousing base, and fasten thetwo retaining clips.
SeeMaintenance Schedule0297todetermine when to replace theengine air cleaner/filter.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.
Cooling System
The cooling system allows theengine to maintain the correctworking temperature.
6.0L V8 Engine Shown, 4.8L
V8 Engine Similar
1. Radiator Pressure Cap
2. Coolant Recovery Tank
3. Engine Cooling Fan (Outof View)
{Warning
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
keep hands, clothing, and tools
away from any engine
cooling fan.
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.

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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,

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
228 Vehicle Care
or bodies of water. Have the coolantchanged by an authorized servicecenter, familiar with legalrequirements regarding usedcoolant disposal. This will helpprotect the environment and yourhealth.
Checking Coolant
The vehicle must be on a levelsurface when checking the coolantlevel.
Check to see if coolant is visible inthe coolant recovery tank. If thecoolant inside the coolant recoverytank is boiling, do not do anythingelse until it cools down. If coolant isvisible but the coolant level is not ator above the COLD FILL mark, adda50/50mixtureofclean,drinkablewater and DEX-COOL coolant at thecoolant recovery tank, but be surethe cooling system is cool beforethis is done.
The coolant recovery tank cap hasthis symbol on it.
When the engine is cold, the coolantlevel should be at or above theCOLD FILL mark. If it is not, therecould be a leak in the coolingsystem.
If the coolant is low, add the coolantor take the vehicle to a dealer forservice.
How to Add Coolant to the
Recovery Tank for Gasoline
Engines
{Warning
Yo u c a n b e b u r n e d i f y o u s p i l l
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Caution
This vehicle has a specific
coolant fill procedure. Failure to
follow this procedure could cause
the engine to overheat and be
severely damaged.
If coolant is needed, add the properDEX-COOL coolant mixture at thecoolant recovery tank.
How to Add Coolant to the
Radiator
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn
the cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure
cap to cool.

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Vehicle Care 229
If coolant is needed, add the propermixture directly to the radiator, butbe sure the cooling system is coolbefore this is done.
1. Remove the radiator pressurecap when the cooling system,including the radiator pressurecap and upper radiator hose, isno longer hot. Turn thepressure cap slowlycounterclockwise until it firststops. Do not press down whileturning the pressure cap.
If a hiss is heard, wait for thatto stop. A hiss means there isstill some pressure left.
2. Keep turning the pressure cap,but now push down as you turnit. Remove the pressure cap.
3. Fill the radiator with the properDEX-COOL coolant mixture, upto the base of the filler neck.SeeRecommended Fluids andLubricants0305for moreinformation about the propercoolant mixture.
4. Fill the coolant recovery tank tothe COLD FILL mark.
5. Reinstall the cap back on thecoolant recovery tank, butleave the radiator pressurecap off.