2017 CHEVROLET EXPRESS CARGO VAN Owners Manual

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
216 Vehicle Care
Accessories and
Modifications
Adding non-dealer accessories ormaking modifications to the vehiclecan affect vehicle performance andsafety, including such things asairbags, braking, stability, ride andhandling, emissions systems,aerodynamics, durability, andelectronic systems like antilockbrakes, traction control, and stabilitycontrol. These accessories ormodifications could even causemalfunction or damage not coveredby the vehicle warranty.
Damage to suspension componentscaused by modifying vehicle heightoutside of factory settings will not becovered by the vehicle warranty.
Damage to vehicle componentsresulting from modifications or theinstallation or use of non-GMcertified parts, including controlmodule or software modifications, isnot covered under the terms of thevehicle warranty and may affectremaining warranty coverage foraffected parts.
GM Accessories are designed tocomplement and function with othersystems on the vehicle. See yourdealer to accessorize the vehicleusing genuine GM Accessoriesinstalled by a dealer technician.
Also, seeAdding Equipment to theAirbag-Equipped Vehicle065.
Vehicle Checks
Doing Your Own
Service Work
{Warning
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own servicework, use the proper servicemanual. It tells you much moreabout how to service the vehiclethan this manual can. To order theproper service manual, seeServicePublications OrderingInformation0321.
This vehicle has an airbag system.Before attempting to do your ownservice work, seeServicing theAirbag-Equipped Vehicle065.

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
218 Vehicle Care
Engine Compartment Overview
6.0L V8 Engine Shown, 4.8L V8 Engine Similar

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 219
1.Battery - North America0236.
2. Radiator Pressure Cap. SeeCooling System0226.
3. Coolant Recovery Tank. SeeCooling System0226.
4. Automatic Transmission FluidDipstick. See“Checking theFluid Level”underAutomaticTr a n s m i s s i o n F l u i d0222.
5. Engine Oil Fill Cap. See“Whento Add Engine Oil”underEngine Oil0219.
6. Engine Oil Dipstick. See“Checking Engine Oil”underEngine Oil0219.
7.Engine Air Cleaner/Filter0225.
8. Power Steering FluidReservoir. SeePower SteeringFluid0232.
9. Brake Master CylinderReservoir. SeeBrakeFluid0234.
10. Windshield Washer FluidReservoir. See“Adding WasherFluid”underWasherFluid0233.
Engine Oil
For diesel engine vehicles, see“Engine Oil”in the Duramax dieselsupplement.
To e n s u r e p r o p e r e n g i n eperformance and long life, carefulattention must be paid to engine oil.Following these simple, butimportant steps will help protectyour investment:
.Use engine oil approved to theproper specification and of theproper viscosity grade. See“Selecting the Right Engine Oil”in this section.
.Check the engine oil levelregularly and maintain theproper oil level. See“CheckingEngine Oil”and“When to AddEngine Oil”in this section.
.Change the engine oil at theappropriate time. SeeEngine OilLife System0221.
.Always dispose of engine oilproperly. See“What to Do withUsed Oil”in this section.
Checking Engine Oil
Check the engine oil level regularly(every 650 km (400 mi), especiallyprior to a long trip. The engine oildipstick handle is a loop. SeeEngine Compartment Overview0218for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center(DIC) message displays, check theoil level.
Follow these guidelines:
.To g e t a n a c c u r a t e r e a d i n g , p a r kthe vehicle on level ground.Check the engine oil level afterthe engine has been off for atleast two hours. Checking theengine oil level on steep gradesor too soon after engine shutoffcan result in incorrect readings.Accuracy improves when

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.

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

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