ECU CHEVROLET EXPRESS CARGO VAN 2017 1.G Service Manual

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 245
2. License Plate BulbAssembly
3. Screws
To r e p l a c e o n e o f t h e s e b u l b s :
1. Remove the screws (3) thatsecure the license plate bulbassembly (2).
2. Turn the bulb socket (1)counterclockwise and pull thebulb straight out of the socket.
3. Install the new bulb.
4. Reverse Steps 1 and 2 toreinstall the license plate bulbassembly.
Replacement Bulbs
Exterior LampBulbNumber
Back-up, RearParking, Stoplamp,and TurnSignal Lamp
3157KX
CenterHigh-MountedStoplamp(CHMSL)
912LL
Exterior LampBulbNumber
Front Parking andTurn Signal Lamp3157KX
FrontSidemarker Lamp194LL
LicensePlate Lamp194LL
Headlamps
CompositeHigh-BeamHeadlamp
9005LL
CompositeLow-BeamHeadlamp
9006LL
Sealed BeamHeadlampH6054
For replacement bulbs not listedhere, contact your dealer.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuitbreakers to protect against anelectrical system overload.
When the current electrical load istoo heavy, the circuit breaker opensand closes, protecting the circuituntil the current load returns tonormal or the problem is fixed. Thisgreatly reduces the chance of circuitoverload and fire caused byelectrical problems.
Fuses and circuit breakers protectpower devices in the vehicle.
Replace a bad fuse with a new oneof the identical size and rating.
If there is a problem on the road andafuseneedstobereplaced,thesame amperage fuse can beborrowed. Choose some feature ofthe vehicle that is not needed to useand replace it as soon as possible.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 273
Caution (Continued)
chains on the tires of the front
axle. Tighten them as tightly as
possible with the ends securely
fastened. Drive slowly and follow
the chain manufacturer's
instructions. If the chains contact
the vehicle, stop and retighten
them. If the contact continues,
slow down until it stops. Driving
too fast or spinning the wheels
with chains on will damage the
vehicle.
For Cutaway models with LT245/75R16, LT225/75R16 or LT215/85R16 size single or dual rear tires,use Low Profile Z-Chain or SAEClass S cables.
For Cargo or Passenger modelswith P245/70R17, LT225/75R16 orLT 2 4 5 / 7 5 R 1 6 s i z e t i r e s , u s e L o wProfile Z-Chain cables. SAE Class Schains are not recommended.
If the vehicle has dual rear tires, donot use individual tire chains. Usetire chains that fit across both dualtires.
If a Tire Goes Flat
It is unusual for a tire to blow outwhile driving, especially if the tiresare maintained properly. SeeTires0252.Ifairgoesoutofatire,itismuch more likely to leak out slowly.But if there ever is a blowout, hereare a few tips about what to expectand what to do:
If a front tire fails, the flat tirecreates a drag that pulls the vehicletoward that side. Take your foot offthe accelerator pedal and grip thesteering wheel firmly. Steer tomaintain lane position, and thengently brake to a stop, well off theroad, if possible.
Arearblowout,particularlyonacurve, acts much like a skid andmay require the same correction asused in a skid. Stop pressing theaccelerator pedal and steer tostraighten the vehicle. It may be
very bumpy and noisy. Gently braketo a stop, well off the road,if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
blowout and a serious crash.
Never attempt to re-inflate a tire
that has been driven on while
severely underinflated or flat.
Have your dealer or an authorized
tire service center repair or
replace the flat tire as soon as
possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 275
Remove the retaining wing bolt andlift it off of the mounting bracket.
Equipment needed for a15-passenger seating arrangementis secured on the rear floor on thepassenger side of the vehicle.
Remove the retaining wing bolt andlift it out of the mounting bracket toaccess the equipment.
The tools you will be using include:
1. Jack
2. Hoist Handle
3. Extension(s)
4. Wheel Wrench
5. Jack Handle
The spare tire is mounted in the rearunderbody of the vehicle.
Use the hoist handle, extension(s),and the wheel wrench to remove theunderbody-mounted spare tire.
To l o w e r t h e s p a r e t i r e f r o m t h evehicle:
1. Spare Tire
2. Tire/Wheel Retainer
3. Hoist Cable

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 281
serviced. SeeCapacities andSpecifications0309for moreinformation.
Storing a Flat or Spare Tire
and Tools
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
1. Put the tire on the ground atthe rear of the vehicle with thevalve stem pointed down.
2. Pull the retaining bar throughthe center of the wheel, makingsure it is properly attached.
3. Pull the wheel toward the rearof the vehicle, keeping thecable tight.
4. Open the passenger siderear door.
5. Insert the chisel end of thehoist handle, on an angle,through the hole in the rearfloor panel above the bumper.
6. Turn the wheel wrenchclockwise to fully raise the tireagainst the underside of thevehicle. Continue turning thewheel wrench until the tire issecure and the cable is tight.Tw o c l i c k s s h o u l d o c c u r. T h espare tire hoist cannot beovertightened.
7. Make sure the tire is storedsecurely. Push, pull (1), andthen try to turn (2) the tire.If the tire moves, use the wheelwrench to tighten the cable.
Tw o c l i c k s m e a n t h e t i r e i s u pall the way.
8. Return the jacking equipmentto the proper location. Securethe items and replace the jackcover.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
286 Vehicle Care
Towing the Vehicle
Caution
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to
suspension components. Use the
proper straps around the tires to
secure the vehicle.
Use only a flatbed tow truck fortowing a disabled vehicle. Neveruse a sling type lift or damage willoccur. Use ramps to help reduceapproach angles if necessary.Atowedvehicleshouldhaveitsdrive wheels off the ground.
Consult a professional towingservice if the disabled vehicle mustbe towed.
Recreational Vehicle
Towing
Recreational vehicle towing meanstowing the vehicle behind anothervehicle, such as behind a motorhome. The two most common typesof recreational vehicle towing areknown as dinghy towing and dollytowing. Dinghy towing is towing thevehicle with all four wheels on theground. Dolly towing is towing thevehicle with two wheels on theground and two wheels up on adevice known as a dolly.
Here are some important things toconsider before recreational vehicletowing:
.What is the towing capacity ofthe towing vehicle? Be sure toread the tow vehiclemanufacturer'srecommendations.
.What is the distance that will betraveled? Some vehicles haverestrictions on how far and howlong they can tow.
.Is the proper towing equipmentgoing to be used? See yourdealer or trailering professionalfor additional advice andequipment recommendations.
.Is the vehicle ready to betowed? Just as preparing thevehicle for a long trip, make surethe vehicle is prepared to betowed.
Caution
Use of a shield mounted in front
of the vehicle grille could restrict
airflow and cause damage to the
transmission. The repairs would
not be covered by the vehicle
warranty. If using a shield, only
use one that attaches to the
towing vehicle.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 287
Dinghy Towing
Caution
If the vehicle is towed with all four
wheels on the ground, the
drivetrain components could be
damaged. The repairs would not
be covered by the vehicle
warranty. Do not tow the vehicle
with all four wheels on the
ground.
The vehicle should not be towedwith all four wheels on the ground.
Dolly Towing
Rear Towing (Rear Wheels Off theGround)
To t o w t h e v e h i c l e f r o m t h e r e a r :
1. Attach the dolly to the towvehicle following the dollymanufacturer's instructions.
2. Drive the rear wheels onto thedolly.
3. Firmly set the parking brake.SeeParking Brake0189.
4. Put the transmission inP(Park).
5. Secure the vehicle to the dollyfollowing the manufacturer'sinstructions.
6. Use an adequate clampingdevice designed for towing toensure that the front wheelsare locked into the straightposition.
7. Turn the ignition to LOCK/OFF.
If the tow vehicle will not bestarted or driven for six weeksor more, remove the batterycable from the negativeterminal (post) of the battery toprevent the battery fromdraining while towing.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Customer Information 317
Services Provided
.Emergency Fuel Delivery:Delivery of enough fuel for thevehicle to get to the nearestservice station.
.Lock-Out Service:Service tounlock the vehicle if you arelocked out. A remote unlock maybe available if you have OnStar.For security reasons, the drivermust present identificationbefore this service is given.
.Emergency Tow from a PublicRoad or Highway:To w t o t h enearest Chevrolet dealer forwarranty service, or if the vehiclewas in a crash and cannot bedriven. Assistance is not givenwhen the vehicle is stuck in thesand, mud, or snow.
.Flat Tire Change:Service tochange a flat tire with the sparetire. The spare tire, if equipped,must be in good condition andproperly inflated. It is the owner'sresponsibility for the repair orreplacement of the tire if it is notcovered by the warranty.
.Battery Jump Start:Service tojump start a dead battery.
.Tr i p I n t e r r u p t i o n B e n e f i t s a n dAssistance:If your trip isinterrupted due to a warrantyevent, incidental expenses maybe reimbursed within thePowertrain warranty period.Items considered are reasonableand customary hotel, meals,rental car, or a vehicle beingdelivered back to the customer,up to 805 km (500 mi).
Services Not Included in
Roadside Assistance
.Impound towing caused byviolation of any laws.
.Legal fines.
.Mounting, dismounting,or changing of snow tires,chains, or other traction devices.
Service is not provided if a vehicleis in an area that is not accessibleto the service vehicle or is not aregularly traveled or maintainedpublic road, which includes ice andwinter roads. Off-road use is notcovered.
Services Specific to
Canadian-Purchased Vehicles
.Fuel Delivery:Reimbursementis up to 7 liters. If available,diesel fuel delivery may berestricted. Propane and otherfuels are not provided throughthis service.
.Lock-Out Service:Vehicleregistration is required.
.Tr i p I n t e r r u p t i o n B e n e f i t s a n dAssistance:Must be over150 km from where your trip wasstarted to qualify.Pre-authorization, originaldetailed receipts, and a copy ofthe repair orders are required.Once authorization has beenreceived, the RoadsideAssistance advisor will help tomake arrangements and explainhow to receive payment.
.Alternative Service:Ifassistance cannot be providedright away, the RoadsideAssistance advisor may givepermission to get localemergency road service. You willreceive payment, up to $100,

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
326 OnStar
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . . 326
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . . 327Security . . . . . . . . . . . . . . . . . . . . . . 327Navigation . . . . . . . . . . . . . . . . . . . . 328Connections . . . . . . . . . . . . . . . . . . 328Diagnostics . . . . . . . . . . . . . . . . . . . 330
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . . 331
OnStar Overview
=Voice Command Button
QBlue OnStar Button
>Red Emergency Button
This vehicle may be equipped with acomprehensive, in-vehicle systemthat can connect to an OnStarAdvisor for Emergency, Security,Navigation, Connections, andDiagnostics Services. OnStarservices may require a paidsubscription and data plan. OnStarrequires the vehicle battery andelectrical system, cellular service,and GPS satellite signals to beavailable and operating. OnStar actsas a link to existing emergencyservice providers. OnStar maycollect information about you andyour vehicle, including locationinformation. See OnStar User
Te r m s , P r i v a c y S t a t e m e n t , a n dSoftware Terms for more detailsincluding system limitations atwww.onstar.com (U.S.) orwww.onstar.ca (Canada).
The OnStar system status light isnext to the OnStar buttons. If thestatus light is:
.Solid Green: System is ready.
.Flashing Green: On a call.
.Red: Indicates a problem.
.Off: System is active. PressQ
twice to speak with an OnStarAdvisor.
PressQor call 1-888-4ONSTAR
(1-888-466-7827) to speak to anAdvisor.
Press=to:
.Make a call, end a call,or answer an incoming call.
.Give OnStar Hands-Free Callingvoice commands.
.Give OnStar Turn-by-TurnNavigation voice commands.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
OnStar 327
.Obtain and customize the Wi-Fi®
hotspot name or SSID andpassword, if equipped.
PressQto connect to an
Advisor to:
.Verify account information orupdate contact information.
.Get driving directions.
.Receive a Diagnostic check ofthe vehicle's key operatingsystems.
.Receive Roadside Assistance.
.Manage Wi-Fi Settings,if equipped.
Press>to get a priority connection
to an OnStar Advisor available 24/7to:
.Get help for an emergency.
.Be a Good Samaritan orrespond to an AMBER Alert.
.Get assistance in severeweather or other crisis situationsand find evacuation routes.
OnStar Services
Emergency
Emergency Services require anactive, OnStar service plan(excludes Basic Plan). WithAutomatic Crash Response, built-insensors can automatically alert aspecially trained OnStar Advisorwho is immediately connected in tothe vehicle to help.
Press>for a priority connection to
an OnStar Advisor who can contactemergency service providers, directthem to your exact location, andrelay important information.
With OnStar Crisis Assist, speciallytrained Advisors are available24 hours a day, 7 days a week, toprovide a central point of contact,assistance, and information during acrisis.
With Roadside Assistance, Advisorscan locate a nearby service providerto help with a flat tire, a batteryjump, or an empty gas tank.
Security
If equipped, OnStar provides theseservices:
.With Stolen Vehicle Assistance,OnStar Advisors can use GPS topinpoint the vehicle and helpauthorities quickly recover it.
.With Remote Ignition Block™,if equipped, OnStar can blockthe engine from being restarted.
.With Stolen Vehicle Slowdown®,if equipped, OnStar can workwith law enforcement togradually slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are lockedand the vehicle alarm sounds, anotification by text, e-mail, or phonecall will be sent. If the vehicle isstolen, an OnStar Advisor can workwith authorities to recover thevehicle.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
328 OnStar
Navigation
OnStar navigation requires aspecific OnStar service plan.
PressQto receive Turn-by-Turn
directions or have them sent to thevehicle’snavigationscreen,if equipped.
Turn-by-Turn Navigation
1. PressQto connect to an
Advisor.
2. Request directions to bedownloaded to the vehicle.
3. Follow the voice-guidedcommands.
Using Voice Commands
During a Planned Route
Cancel Route
1. Press=.Systemresponds:
“OnStar ready,”then a tone.
2. Say“Cancel route.”Systemresponds:“Do you want tocancel directions?”
3. Say“Ye s .”System responds:“OK, request completed, thankyou, goodbye.”
Route Preview
1. Press=.Systemresponds:
“OnStar ready,”then a tone.
2. Say“Route preview.”Systemresponds with the next threemaneuvers.
Repeat
1. Press=.Systemresponds:
“OnStar ready,”then a tone.
2. Say“Repeat.”Systemresponds with the last directiongiven, then responds with“OnStar ready,”then a tone.
Get My Destination
1. Press=.Systemresponds:
“OnStar ready,”then a tone.
2. Say“Get my destination.”System responds with theaddress and distance to thedestination, then responds with“OnStar ready,”then a tone.
Send Destination to Vehicle
Subscribers can have directionssent to the vehicle’snavigationscreen, if equipped.
PressQ,thenasktheAdvisorto
download directions to the vehicle’snavigation system, if equipped. Afterthe call ends, the navigation screenwill provide prompts to begin drivingdirections. Routes that are sent tothe navigation screen can only becanceled through the navigationsystem.
See www.onstar.com (U.S.) orwww.onstar.ca (Canada).
Connections
The following OnStar services helpwith staying connected.
For coverage maps, seewww.onstar.com (U.S.) orwww.onstar.ca (Canada).
Ensuring Security
.Change the default passwordsfor the Wi-Fi hotspot andRemoteLink mobile application.Make these passwords different