2017 CHEVROLET EXPRESS CARGO VAN wheel size

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
24 Keys, Doors, and Windows
{Warning
If the key is unintentionally
rotated while the vehicle is
running, the ignition could be
moved out of the RUN position.
This could be caused by heavy
items hanging from the key ring,
or by large or long items attached
to the key ring that could be
contacted by the driver or
steering wheel. If the ignition
moves out of the RUN position,
the engine will shut off, braking
and steering power assist may be
(Continued)
Warning (Continued)
impacted, and airbags may not
deploy. To reduce the risk of
unintentional rotation of the
ignition key, do not change the
way the ignition key and Remote
Keyless Entry (RKE) transmitter,
if equipped, are connected to the
provided key rings.
The ignition key and key rings, andRKE transmitter, if equipped, aredesigned to work together as asystem to reduce the risk ofunintentionally moving the key outof the RUN position. The ignitionkey has a small hole to allowattachment of the provided key ring.It is important that any replacementignition keys have a small hole. Seeyour dealer if a replacement key isrequired.
The combination and size of therings that came with your keys werespecifically selected for yourvehicle. The rings are connected tothe key like two links of a chain toreduce the risk of unintentionally
moving the key out of the RUNposition. Do not add any additionalitems to the ring attached to theignition key. Attach additional itemsonly to the second ring, and limitadded items to a few essential keysor small, light items no larger thanan RKE transmitter.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Seats and Restraints 65
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicleshould be serviced. There are partsof the airbag system in severalplaces around the vehicle. Yourdealer and the service manual haveinformation about servicing thevehicle and the airbag system. Topurchase a service manual, seeService Publications OrderingInformation0321.
{Warning
For up to 10 seconds after the
vehicle is turned off and the
battery is disconnected, an airbag
can still inflate during improper
service. You can be injured if you
are close to an airbag when it
inflates. Avoid yellow connectors.
They are probably part of the
airbag system. Be sure to follow
proper service procedures, and
make sure the person performing
work for you is qualified to do so.
Adding Equipment to the
Airbag-Equipped Vehicle
Adding accessories that change thevehicle's frame, bumper system,height, front end, or side sheetmetal, may keep the airbag systemfrom working properly. Theoperation of the airbag system canalso be affected by changing anyparts of the front seats, safety belts,the airbag sensing and diagnosticmodule, steering wheel, instrumentpanel, any of the airbag modules,ceiling or pillar garnish trim, frontsensors, or airbag wiring.
Yo u r d e a l e r a n d t h e s e r v i c e m a n u a lhave information about the locationof the airbag sensors, sensing anddiagnostic module, and airbagwiring.
If the vehicle has rollover roof-railairbags, seeDifferent Size Tiresand Wheels0269for additionalimportant information.
If you have to modify your vehiclebecause you have a disability andyou have questions about whetherthe modifications will affect the
vehicle's airbag system, or if youhave questions about whether theairbag system will be affected if thevehicle is modified for any otherreason, call Customer Assistance.SeeCustomer AssistanceOffices0314.
Airbag System Check
The airbag system does not needregularly scheduled maintenance orreplacement. Make sure the airbagreadiness light is working. SeeAirbag Readiness Light099.
Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, seeWhere Are the
Airbags?057.Seeyourdealer
for service.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
214 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 215California Proposition65 Warning . . . . . . . . . . . . . . . . . 215California PerchlorateMaterials Requirements . . . . . 215Accessories andModifications . . . . . . . . . . . . . . . . 216
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 216Hood . . . . . . . . . . . . . . . . . . . . . . . . . 217Engine CompartmentOverview . . . . . . . . . . . . . . . . . . . . 218Engine Oil . . . . . . . . . . . . . . . . . . . . 219Engine Oil Life System . . . . . . . 221Automatic TransmissionFluid . . . . . . . . . . . . . . . . . . . . . . . . 222Engine Air Cleaner/Filter . . . . . . 225Cooling System . . . . . . . . . . . . . . 226Engine Coolant . . . . . . . . . . . . . . . 227Engine Overheating . . . . . . . . . . 230Engine Fan . . . . . . . . . . . . . . . . . . . 231Power Steering Fluid . . . . . . . . . 232Washer Fluid . . . . . . . . . . . . . . . . . 233Brakes . . . . . . . . . . . . . . . . . . . . . . . 233Brake Fluid . . . . . . . . . . . . . . . . . . . 234
Battery - North America . . . . . . 236Rear Axle . . . . . . . . . . . . . . . . . . . . 236Noise Control System . . . . . . . . 237Starter Switch Check . . . . . . . . . 238Automatic Transmission ShiftLock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 238Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 239Park Brake and P (Park)Mechanism Check . . . . . . . . . . 239Wiper Blade Replacement . . . . 239
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 240
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 240Halogen Bulbs . . . . . . . . . . . . . . . . 240Headlamps . . . . . . . . . . . . . . . . . . . 241Front Turn Signal, Sidemarker,and Parking Lamps . . . . . . . . . 242Ta i l l a m p s . . . . . . . . . . . . . . . . . . . . . 2 4 3Center High-MountedStoplamp (CHMSL) . . . . . . . . . 244License Plate Lamp . . . . . . . . . . 244Replacement Bulbs . . . . . . . . . . . 245
Electrical System
Electrical System Overload . . . 245Fuses and Circuit Breakers . . . 246
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 246Floor Console Fuse Block . . . . 249
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 252All-Season Tires . . . . . . . . . . . . . . 253Winter Tires . . . . . . . . . . . . . . . . . . 253All-Terrain Tires . . . . . . . . . . . . . . . 253Tire Sidewall Labeling . . . . . . . . 254Tire Designations . . . . . . . . . . . . . 256Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 257Tire Pressure . . . . . . . . . . . . . . . . . 260Tire Pressure MonitorSystem . . . . . . . . . . . . . . . . . . . . . . 261Tire Pressure MonitorOperation . . . . . . . . . . . . . . . . . . . 262Tire Inspection . . . . . . . . . . . . . . . . 265Tire Rotation . . . . . . . . . . . . . . . . . 265Dual Tire Rotation . . . . . . . . . . . . 266When It Is Time for NewTires . . . . . . . . . . . . . . . . . . . . . . . . 267Buying New Tires . . . . . . . . . . . . . 268Different Size Tires andWheels . . . . . . . . . . . . . . . . . . . . . . 269Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . 270Wheel Alignment and TireBalance . . . . . . . . . . . . . . . . . . . . . 271Wheel Replacement . . . . . . . . . . 271

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
Vehicle Care 253
All-Season Tires
This vehicle may come withall-season tires. These tires aredesigned to provide good overallperformance on most road surfacesand weather conditions. Originalequipment tires designed to GM'sspecific tire performance criteriahave a TPC specification codemolded onto the sidewall. Originalequipment all-season tires can beidentified by the last two charactersof this TPC code, which willbe“MS.”
Consider installing winter tires onthe vehicle if frequent driving onsnow or ice-covered roads isexpected. All-season tires provideadequate performance for mostwinter driving conditions, but theymay not offer the same level oftraction or performance as wintertires on snow or ice-covered roads.SeeWinter Tires0253.
Winter Tires
This vehicle was not originallyequipped with winter tires. Wintertires are designed for increasedtraction on snow and ice-coveredroads. Consider installing wintertires on the vehicle if frequentdriving on ice or snow coveredroads is expected. See your dealerfor details regarding winter tireavailability and proper tire selection.Also, seeBuying New Tires0268.
With winter tires, there may bedecreased dry road traction,increased road noise, and shortertread life. After changing to wintertires, be alert for changes in vehiclehandling and braking.
If using winter tires:
.Use tires of the same brand andtread type on all four wheelpositions.
.Use only radial ply tires of thesame size, load range, andspeed rating as the originalequipment tires.
Winter tires with the same speedrating as the original equipment tiresmay not be available for H, V, W, Y,and ZR speed rated tires. If wintertires with a lower speed rating arechosen, never exceed the tire'smaximum speed capability.
All-Terrain Tires
This vehicle may have All-TerrainTires. These tires provide goodperformance on most road surfaces,weather conditions, and for off-roaddriving.
The tread pattern on these tires maywear more quickly than other tires.Consider rotating the tires morefrequently than at 12 000 km(7,500 mi) intervals if irregular wearis noted when the tires areinspected. SeeTireInspection0265.

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
Vehicle Care 265
5. Place the relearn tool againstthe tire sidewall, near the valvestem. Then press the button toactivate the TPMS sensor.Ahornchirpconfirmsthatthesensor identification code hasbeen matched to this tire andwheel position.
6. Proceed to the passenger sidefront tire, and repeat theprocedure in Step 5.
7. Proceed to the passenger siderear tire, and repeat theprocedure in Step 5.
8. Proceed to the driver side reartire, and repeat the procedurein Step 5. The horn sounds twotimes to indicate the sensoridentification code has beenmatched to the driver side reartire, and the TPMS sensormatching process is no longeractive. The TIRE LEARNINGACTIVE message on the DICdisplay screen goes off.
9. Turn the ignition switch toLOCK/OFF.
10. Set all four tires to therecommended air pressurelevel as indicated on the Tireand Loading Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.
.The tread or sidewall is
cracked, cut, or snagged
deep enough to show cord or
fabric.
.The tire has a bump, bulge,
or split.
.The tire has a puncture, cut,
or other damage that cannot
be repaired well because of
the size or location of the
damage.
Tire Rotation
Tires should be rotated every
12 000 km (7,500 mi). See
Maintenance Schedule0297.
Tires are rotated to achieve a
uniform wear for all tires. The
first rotation is the most
important.
Any time unusual wear is
noticed, rotate the tires as soon
as possible and check the wheel
alignment. Also check for
damaged tires or wheels. See
When It Is Time for New Tires
0267andWheel
Replacement0271.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9967827) - 2017 - crc - 5/2/16
268 Vehicle Care
of grease, gasoline or othersubstances that can deterioraterubber.
Parking for an extended period cancause flat spots on the tires thatmay result in vibrations whiledriving. When storing a vehicle forat least a month, remove the tires orraise the vehicle to reduce theweight from the tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,
GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. SeeTire Sidewall
Labeling0254for additional
information.
GM recommends replacing worn
tires in complete sets of four (six
for dual rear wheels). Uniform
tread depth on all tires will help
to maintain the performance of
the vehicle. Braking and
handling performance may be
adversely affected if all the tires
are not replaced at the same
time. If proper rotation and
maintenance have been done,
all four tires (six for dual rear
wheels) should wear out at
about the same time. SeeTire
Rotation0265for information
on proper tire rotation. However,
if it is necessary to replace only
one axle set of worn tires, place
the new tires on the rear axle
(two for single rear wheels, four
for dual rear wheels).
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
(Continued)