2017 CHEVROLET EXPRESS CARGO VAN engine

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
246 Vehicle Care
Headlamp Wiring
An electrical overload may causethe lamps to go on and off, or insome cases to remain off. Have theheadlamp wiring checked right awayif the lamps go on and off orremain off.
Windshield Wipers
If the wiper motor overheats due toheavy snow or ice, the windshieldwipers will stop until the motor coolsand will then restart.
Although the circuit is protectedfrom electrical overload, overloaddue to heavy snow or ice maycause wiper linkage damage.Always clear ice and heavy snowfrom the windshield before using thewindshield wipers.
If the overload is caused by anelectrical problem and not snow orice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle areprotected from short circuits by acombination of fuses and circuitbreakers. This greatly reduces thechance of fires caused by electricalproblems.
Look at the silver-colored bandinside the fuse. If the band is brokenor melted, replace the fuse. Be sureyou replace a bad fuse with a newone of the identical size and rating.
Engine Compartment
Fuse Block
For vans with a diesel engine, seethe Duramax diesel supplement.
The fuse block is located in theengine compartment on the driverside of the vehicle.
Vehicles with upfitter content
See www.gmupfitter.com for upfitterprovisions and best practices.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
248 Vehicle Care
FusesUsage
19 Engine controlmodule battery
20–
21 Left trailerstoplamp/Turnlamp
22–
23–
24 Fuel pump
25 Auxiliary poweroutlet
26 Body controlmodule 3
27 Special equipmentoption
28 Airbag
29 Steering wheelsensor
30 Engine controlmodule/Ignition/Glow plug module
31 Transmissioncontrol module/Ignition
FusesUsage
32 Transmissioncontrol modulebattery
33 Rear parking aidmodule
34–
35 Fuel operatedheater module
36 Fuel system controlmodule battery
41–
42 Trailer wiring
43 EV fan clutch
44 Starter solenoid
45 Engine controlmodule/Powertrain
46–
47 Cooling fan–low
51 Left high-beamheadlamp
52 Right high-beamheadlamp
FusesUsage
53 Left low-beamheadlamp
54 Right low-beamheadlamp
55 Wipers
56 Canister ventsolenoid
58 Body controlmodule 2
59 Body controlmodule 1
61–
62 O2 sensor 2/EV fan(diesel)
63–
64 Mass air flow/Canister vent
65 Ignition/Injectors–odd
66 Daytime runninglamps 2(LOLVL-V22) (ifequipped)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 249
FusesUsage
67 Daytime runninglamps 1 (UPLVL+V22) (if equipped)
68 Auxiliary stoplamps
69 Trailer stoplamps
70–
71 Fuel heater/Flexfuel sensor
72 Body controlmodule 6
73 Lighter/Data linkconnector
74 Front blower
75 Fuel injectors
76–
77 O2 sensor 2
78 Engine controlmodule/Powertrain
79 Ignition/Injectors–even
RelaysUsage
15 Run/Crank
37–
38 Fuel pump
39 Crank
40 A/C
48 EV fan clutch
49 Powertrain
50–
57 Cooling fan–low
60 Fan control
Floor Console Fuse Block
The floor console fuse block isunder the driver seat.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
256 Vehicle Care
molded onto both sides of the
tire, although only one side may
have the date of manufacture.
(6) Tire Ply Material:The type
of cord and number of plies in
the sidewall and under the tread.
(7) Single Tire Maximum
Load:Maximum load that can
be carried and the maximum
pressure needed to support that
load when used as a single. For
information on recommended
tire pressure seeTire Pressure
0260andVehicle Load
Limits0171.
Tire Designations
Tire Size
The following examples show
the different parts of a tire size.
Passenger (P-Metric) Tire
(1) Passenger (P-Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire
and Rim Association.
(2) Tire Width:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio:Atwo-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 75, as shown in
item 3 of the illustration, it would
mean that the tire's sidewall is
75 percent as high as it is wide.
(4) Construction Code:Aletter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter:Diameter of
the wheel in inches.
(6) Service Description:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 257
Light Truck (LT-Metric) Tire
(1) Light Truck (LT-Metric)
Tire:The United States version
of a metric tire sizing system.
The letters LT as the first two
characters in the tire size mean
alighttrucktireengineeredto
standards set by the U.S. Tire
and Rim Association.
(2) Tire Width:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio:Atwo-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 75, as shown in
item 3 of the light truck
(LT-Metric) tire illustration, it
would mean that the tire's
sidewall is 75 percent as high as
it is wide.
(4) Construction Code:Aletter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter:Diameter of
the wheel in inches.
(6) Load Range:Load Range.
(7) Service Description:The
service description indicates the
load index and speed rating of a
tire. If two numbers are given as
in the example, 120/116, then
this represents the load index for
single versus dual wheel usage
(single/dual). The speed rating is
the maximum speed a tire is
certified to carry a load. This
does not apply to Goodyear
LT 2 2 5 / 7 5 R 1 6 G 9 4 9 R S A a n d
Goodyear LT225/75R16 G933
RSD commercial truck tires; see
the dual tire and single tire
maximum load and load range
letter designations on the tire
sidewall.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of
the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio:The relationship
of a tire's height to its width.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
264 Vehicle Care
the sensor matching process isperformed successfully. Seeyour dealer for service.
.Replacement tires or wheels donot match the original equipmenttires or wheels. Tires and wheelsother than those recommendedcould prevent the TPMS fromfunctioning properly. SeeBuyingNew Tires0268.
.Operating electronic devices orbeing near facilities using radiowave frequencies similar to theTPMS could cause the TPMSsensors to malfunction.
If the TPMS is not functioningproperly, it cannot detect or signal alow tire condition. See your dealerfor service if the TPMS malfunctionlight and DIC message come onand stay on.
TPMS Sensor Matching
Process
Each TPMS sensor has a uniqueidentification code. The identificationcode needs to be matched to a newtire/wheel position after rotating thevehicle’stiresorreplacingoneor
more of the TPMS sensors. Also,the TPMS sensor matching processshould be performed after replacingasparetirewitharoadtirecontaining the TPMS sensor. Themalfunction light and the DICmessage should go off at the nextignition cycle. The sensors arematched to the tire/wheel positions,using a TPMS relearn tool, in thefollowing order: driver side front tire,passenger side front tire, passengerside rear tire, and driver side rear.See your dealer for service or topurchase a relearn tool. A TPMSrelearn tool can also be purchased.See Tire Pressure Monitor SensorActivation Tool atwww.gmtoolsandequipment.com orcall 1-800-GM TOOLS(1-800-468-6657).
There are two minutes to match thefirst tire/wheel position, andfive minutes overall to match all fourtire/wheel positions. If it takeslonger, the matching process stopsand must be restarted.
The TPMS sensor matchingprocess is:
1. Set the parking brake.
2. Turn the ignition to ON/RUNwith the engine off.
3. Press the Remote Keyless
Entry (RKE) transmitter'sQ
andKbuttons at the same
time for approximatelyfive seconds. The horn soundstwice to signal the receiver is inrelearn mode and TIRELEARNING ACTIVE messagedisplays on the DIC screen.
If the vehicle does not haveRKE, press the DriverInformation Center (DIC)vehicle information button untilthe PRESSVTO RELEARNTIRE POSITIONS messagedisplays. The horn soundstwice to signal the receiver is inrelearn mode and TIRELEARNING ACTIVE messagedisplays on the DIC screen.
4. Start with the driver sidefront tire.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
274 Vehicle Care
Warning (Continued)
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.
If a tire goes flat, avoid further tireand wheel damage by driving slowlyto a level place, well off the road,if possible. Turn on the hazardwarning flashers. SeeHazardWarning Flashers0128.
{Warning
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:
(Continued)
Warning (Continued)
1. Set the parking brake firmly.
2. Put an automatictransmission in P (Park) or amanual transmission in1(First) or R(Reverse).
3. Turn off the engine and donot restart while the vehicleis raised.
4. Do not allow passengers toremain in the vehicle.
5. Place wheel blocks,if equipped, on both sides ofthe tire at the oppositecorner of the tire beingchanged.
When the vehicle has a flat tire (2),use the following example as aguide to assist in the placement ofthe wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explainshow to repair or change a tire.
Tire Changing
Removing the Spare Tire and
Tools
Equipment needed for a cargo vanor a passenger van is in thepassenger side rear corner of thevehicle.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
284 Vehicle Care
Warning (Continued)
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{Warning
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Check that the jumper cablesdo not have loose or missinginsulation. If they do, you couldget a shock. The vehiclescould be damaged too.
Before you connect the cables,here are some basic things youshould know. Positive (+) willgo to positive (+) or to a remotepositive (+) terminal if thevehicle has one. Negative (✓)will go to an unpainted metalpart or to a remote negative (✓)terminal if the vehicle has one.
On your van, use the unpaintedradio antenna bracket as aremote negative (✓)terminal.
Do not connect positive (+) tonegative (✓)oryouwillgetashort that would damage thebattery and maybe other partstoo. And do not connect thenegative (✓)cabletothenegative (✓)terminalonthedead battery because this cancause sparks.
6. Connect the red positive (+)cable to the positive (+)terminal of the dead battery.Use a remote positive (+)terminal if the vehicle has one.
Do not let the other end touchmetal. Connect it to thepositive (+) terminal of the goodbattery. Use a remotepositive (+) terminal if thevehicle has one.
7. Now connect the blacknegative (✓)cabletothenegative (✓)terminalofthegood battery. Use a remotenegative (✓)terminalifthevehicle has one.
Do not let the other end touchanything until the next step.The other end of thenegative (✓)cabledoesnotgoto the dead battery. It goes to aheavy, unpainted metal enginepart or to a remote negative (✓)terminal on the vehicle with thedead battery. On your van, usethe unpainted radio antennabracket as a remotenegative (✓)terminal.