2023 CHEVROLET EXPRESS tires

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16547501) - 2023 - CRC - 6/10/22
158 Driving and Operating
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear ofthe chocks.
4. Stop and have someone pick up and store the chocks
Launching and Retrieving a Boat
Backing the Trailer into the Water
{Warning
.Have all passengers get out of the
vehicle before backing onto the sloped
part of the ramp. Lower the driver and
passenger side windows before
backing onto the ramp. This will
provide a means of escape in the
unlikely event the vehicle slides into
the water.
.If the boat launch surface is slippery,
have the driver remain in the vehicle
with the brake pedal applied while the
boat is being launched. The boat
launch can be especially slippery at
low tide when part of the ramp was
previously submerged at high tide. Do
not back onto the ramp to launch the
boat if you are not sure the vehicle
can maintain traction.
(Continued)
Warning (Continued)
.Do not move the vehicle if someone is
in the path of the trailer. Some parts
of the trailer might be underwater and
not visible to people who are assisting
in launching the boat.
Disconnect the wiring to the trailer before
backing the trailer into the water to prevent
damage to the electrical circuits on the
trailer. Reconnect the wiring to the trailer
after removing the trailer from the water.
If the trailer has electric brakes that can
function when the trailer is submerged, it
might help to leave the electrical trailer
connector attached to maintain trailer brake
functionality while on the boat ramp.
To back the trailer into the water: 1. Slowly back down the boat ramp until the boat is floating, but no further than
necessary.
2. Press and hold the brake pedal, but do not shift into P (Park) yet.
3. Have someone place chocks under the front wheels of the vehicle.
4. Gradually release the brake pedal to allow the chocks to absorb the load of
the trailer. 5. Reapply the brake pedal. Then apply the
parking brake and shift into P (Park).
6. Release the brake pedal.
Pulling the Trailer from the Water
To pull the trailer from the water: 1. Press and hold the brake pedal.
2. Start the engine and shift into a gear.
3. Release the parking brake.
4. Let up on the brake pedal.
5. Drive slowly until the tires are clear of the chocks.
6. Stop and have someone pick up and store the chocks.
7. Slowly pull the trailer from the water.
Caution
If the vehicle tires begin to spin and the
vehicle begins to slide toward the water,
remove your foot from the accelerator
pedal and apply the brake pedal. Seek
help to have the vehicle towed up
the ramp.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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168 Driving and Operating
Tires
.Do not tow a trailer while using a
compact spare tire on the vehicle.
.Tires must be properly inflated to support
loads while towing a trailer. SeeTires
0 203 for instructions on proper tire
inflation.
Safety Chains
Always attach chains between the vehicle
and the trailer, and attach the chains to the
holes on the trailer hitch platform.
Instructions about safety chains may be
provided by the hitch manufacturer or by
the trailer manufacturer.
Cross the safety chains under the tongue of
the trailer to help prevent the tongue from
contacting the road if it becomes separated
from the hitch. Always leave just enough
slack so the combination can turn. Never
allow safety chains to drag on the ground.
Trailer Brakes
Loaded trailers over 675 kg (1,500 lb) must
be equipped with brake systems and with
brakes for each axle. Trailer braking
equipment conforming to Canadian Standards Association (CSA) requirement
CAN3-D313, or its equivalent, is
recommended.
State or local regulations may require the
trailer to have its own braking system if the
loaded weight of the trailer exceeds certain
minimums. These requirements vary from
state to state. Read and follow the
instructions for the trailer brakes so they are
installed, adjusted, and maintained properly.
Never attempt to tap into your vehicle's
hydraulic brake system. If you do, both the
vehicle anti-lock brakes and the trailer
brakes may not function, which could result
in a crash.
Trailer Wiring Harness
Basic Trailer Wiring
If the vehicle is not equipped with a trailer
connector on the rear bumper, a seven-wire
trailering harness is tied to the vehicle’s
frame. The harness requires the installation
of a trailer connector, which is available
through your dealer.
Use only a round, seven-wire connector with
flat blade terminals meeting SAE J2863
specifications for proper electrical
connectivity.The seven-wire harness connector contains
the following trailer circuits:
.Yellow: Stop/Turn Signal Left*
.Dark Green: Stop/Turn Signal Right*
.Brown: Tail/Parking Lamps**
.Light Green: Reverse Lamps**
.Red/Black: Battery Feed
.White: Ground
.Dark Blue: Electric Trailer Brake
* If the vehicle is a cutaway with trailer
provisions, each stop/turn signal has a
15 amp fuse. However, the cutaway lighting
connector will have a 10 amp fuse for each
signal.
**If the vehicle is a cutaway with trailer
provisions, there is a 15 amp fuse for the
trailer park lamps and a 15 amp fuse for the
cutaway rear lighting connector park lamps.
Also, a 10 amp fuse will be shared for trailer
back-up lamps and cutaway rear lighting
connector back-up lamps.
Heavy-Duty Trailer Wiring Harness Package
lf equipped, the trailer wiring harness, with
a seven-pin connector is mounted on the
trailer hitch.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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170 Driving and Operating
Operating the vehicle in Tow/Haul Mode
when lightly loaded or not towing will not
cause damage; however, it is not
recommended and may result in unpleasant
engine and transmission driving
characteristics and reduced fuel economy.
Trailer Sway Control (TSC)
Vehicles with StabiliTrak/Electronic Stability
Control (ESC) have a Trailer Sway Control
(TSC) feature. Trailer sway is unintended
side-to-side motion of a trailer while towing.
If the vehicle is towing a trailer and the TSC
detects that sway is increasing, the vehicle
brakes are selectively applied at each wheel,
to help reduce excessive trailer sway.
If TSC is enabled, the Traction Control
System (TCS)/StabiliTrak/ESC warning light
will flash on the instrument cluster. Reduce
vehicle speed by gradually removing your
foot from the accelerator. If trailer sway
continues, StabiliTrak/ESC can reduce engine
torque to help slow the vehicle. TSC will notfunction if StabiliTrak/ESC is turned off. See
Traction Control/Electronic Stability Control
0
142.
{Warning
Trailer sway can result in a crash and in
serious injury or death, even if the
vehicle is equipped with TSC.
If the trailer begins to sway, reduce
vehicle speed by gradually removing your
foot from the accelerator. Then pull over
to check the trailer and vehicle to help
correct possible causes, including an
improperly or overloaded trailer,
unrestrained cargo, improper trailer hitch
configuration, or improperly inflated or
incorrect vehicle or trailer tires. See
Towing Equipment 0167 for trailer
ratings and hitch setup recommendations.
Trailer Tires
Special Trailer (ST) tires differ from vehicle
tires. Trailer tires are designed with stiff
sidewalls to help prevent sway and to
support heavy loads. These features can
make it difficult to determine if the trailer
tire pressures are low only based on a visual
inspection. Always check all trailer tire pressures before
each trip when the tires are cool. Low trailer
tire pressure is a leading cause of trailer tire
blow-outs.
Trailer tires deteriorate over time. The trailer
tire sidewall will show the week and year
the tire was manufactured. Many trailer tire
manufacturers recommend replacing tires
more than six years old.
Overloading is another leading cause of
trailer tire blow-outs. Never load your trailer
with more weight than the tires are
designed to support. The load rating is
located on the trailer tire sidewall.
Always know the maximum speed rating for
the trailer tires before driving. This may be
significantly lower than the vehicle tire
speed rating. The speed rating may be on
the trailer tire sidewall. If the speed rating is
not shown, the default trailer tire speed
rating is 105 km/h (65 mph).

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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172 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 173
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 173
Accessories and Modifications . . . . . . . . . . 173
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 173
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Engine Compartment Overview . . . . . . . . 176
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Engine Oil Life System . . . . . . . . . . . . . . . . . 181
Automatic Transmission Fluid . . . . . . . . . . 181
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 182
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 183
Engine Overheating . . . . . . . . . . . . . . . . . . . 186
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Power Steering Fluid . . . . . . . . . . . . . . . . . . 188
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Battery - North America . . . . . . . . . . . . . . . 191
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Noise Control System . . . . . . . . . . . . . . . . . . 191
Starter Switch Check . . . . . . . . . . . . . . . . . . . 192
Automatic Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . 193
Ignition Transmission Lock Check . . . . . . 193 Park Brake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Wiper Blade Replacement . . . . . . . . . . . . . 193
Windshield Replacement . . . . . . . . . . . . . . 194
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 194
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 194
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 194
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . 194
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Center High-Mounted Stoplamp (CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 196
Electrical System
Electrical System Overload . . . . . . . . . . . . . 197
Fuses and Circuit Breakers . . . . . . . . . . . . . 198
Engine Compartment Fuse Block . . . . . . 198
Floor Console Fuse Block . . . . . . . . . . . . . . 202
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . 204
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 205
Tire Designations . . . . . . . . . . . . . . . . . . . . . 206
Tire Terminology and Definitions . . . . . 206
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Tire Pressure Monitor System . . . . . . . . . 209
Tire Pressure Monitor Operation . . . . . . . 210
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 212
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
When It Is Time for New Tires . . . . . . . . . 214
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 215
Different Size Tires and Wheels . . . . . . . . 216
Uniform Tire Quality Grading . . . . . . . . . . 216
Wheel Alignment and Tire Balance . . . . 217
Wheel Replacement . . . . . . . . . . . . . . . . . . . 218
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 219
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 220
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . 227
Jump Starting
Jump Starting - North America . . . . . . . . 228
Towing the Vehicle
Transporting a Disabled Vehicle . . . . . . . . 231
Recreational Vehicle Towing . . . . . . . . . . . 232
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 189
To determine what kind of fluid to use, see
Recommended Fluids and Lubricants0246.
Always use the proper fluid. Failure to use
the proper fluid can cause leaks and damage
hoses and seals.
Washer Fluid
What to Use
When the vehicle needs windshield washer
fluid, be sure to read the manufacturer's
instructions before use. If operating the
vehicle in an area where the temperature
may fall below freezing, use a fluid that has
sufficient protection against freezing.
Adding Washer Fluid
Open the cap with the washer symbol on it.
Add washer fluid until the tank is full. See
Engine Compartment Overview 0176 for
reservoir location.
Caution
.Do not use washer fluid that contains
any type of water repellent coating.
This can cause the wiper blades to
chatter or skip.
.Do not use engine coolant (antifreeze)
in the windshield washer. It can
damage the windshield washer system
and paint.
.Do not mix water with ready-to-use
washer fluid. Water can cause the
solution to freeze and damage the
washer fluid tank and other parts of
the washer system.
.When using concentrated washer fluid,
follow the manufacturer instructions
for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very cold.
This allows for fluid expansion if
freezing occurs, which could damage
the tank if it is completely full.
Brakes
Disc brake linings have built-in wear
indicators that make a high-pitched warning
sound when the brake linings are worn and new linings are needed. The sound can come
and go or can be heard all the time when
the vehicle is moving, except when applying
the brake pedal firmly.
{Warning
The brake wear warning sound means
that soon the brakes will not work well.
That could lead to a crash. When the
brake wear warning sound is heard, have
the vehicle serviced.
Caution
Continuing to drive with worn-out brake
linings could result in costly brake
repairs.
Some driving conditions or climates can
cause a brake squeal when the brakes are
first applied, clearing up following several
applications. This does not mean something
is wrong with the brakes.
Properly torqued wheel nuts are necessary
to help prevent brake pulsation. When tires
are rotated, inspect brake linings for wear
and evenly tighten wheel nuts in the proper
sequence to torque specifications. See
Capacities and Specifications 0250.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 203
Mini-FusesUsage
F17 Heated Outside Mirrors
F18 Rear Window Defogger
F19 Compass
F20 Radio/Chime/SiriusXM Satellite Radio
F21 Remote Function Actuator/Tire Pressure
Monitor
F22 Ignition Switch/Discrete Logic Ignition Sensor/
Pass Key 3
F23 Instrument Cluster
F24 –
F25 HVAC Control
F26 Auxiliary/Trailer Reverse Lamps
F27 Reverse Tail Lamps
F28 Upfitter 2/Gas Ambulance
F29 Rear Blower
F30 Upfitter/Courtesy Lamps Mini-Fuses
Usage
F31 Front Door Lock
F32 Rear Door Lock
F33 Cargo Door Unlock
F34 Front Passenger Door Unlock
F35 Rear Passenger Door Unlock
F36 Driver Door Unlock F37 –
F38 –
Relays Usage
K1 Run
K2 –
K3 Parking Lamps
K4 Upfitter 2 K5 Rear Window Defogger
K6 Retained Accessory Power Circuit Breakers Usage
CB1 Power Seats
CB2 Power Windows
Wheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire
warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0126.
(Continued)

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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204 Vehicle Care
Warning (Continued)
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
.Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact—such as when
hitting a pothole. Keep tires at the
recommended pressure.
.Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
.Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.Improperly repaired tires can cause
a crash. Only your dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
(Continued)
Warning (Continued)
.Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
All-Season Tires
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be “MS.”
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not
offer the same level of traction or
performance as winter tires on snow or
ice-covered roads. See Winter Tires0204.
Winter Tires
This vehicle was not originally equipped
with winter tires. Winter tires are designed
for increased traction on snow and
ice-covered roads. Consider installing winter
tires on the vehicle if frequent driving on ice
or snow covered roads is expected. See your
dealer for details regarding winter tire
availability and proper tire selection. Also,
see Buying New Tires 0215.
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
.Use tires of the same brand and tread
type on all four wheel positions.
.Use only radial ply tires of the same size,
load range, and speed rating as the
original equipment tires.
Winter tires with the same speed rating as
the original equipment tires may not be
available for H, V, W, Y, and ZR speed rated
tires. If winter tires with a lower speed
rating are chosen, never exceed the tire's
maximum speed capability.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 205
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The example
shows a typical light truck tire sidewall.
Light Truck (LT-Metric) Tire
(1) Tire Size:The tire size code is a
combination of letters and numbers
used to define a particular tire's width,
height, aspect ratio, construction type,
and service description. See the “Tire
Size” illustration later in this section for
more detail. (2) TPC Spec (Tire Performance Criteria
Specification)
:Original equipment tires
designed to GM's specific tire
performance criteria have a TPC
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.
(3) Dual Tire Maximum Load
:
Maximum load that can be carried and
the maximum pressure needed to
support that load when used in a dual
configuration. For information on
recommended tire pressure see Tire
Pressure 0208 and
Vehicle Load Limits 0126.
(4) DOT (Department of
Transportation)
:The Department of
Transportation (DOT) code indicates that
the tire is in compliance with the U.S.
Department of Transportation Motor
Vehicle Safety Standards.
DOT Tire Date of Manufacture
:The last
four digits of the TIN indicate the tire
manufactured date. The first two digits
represent the week and the last two
digits, the year. For example, the third week of the year 2020 would have a
4-digit DOT date of 0320. Week 01 is
the first full week (Sunday through
Saturday) of each year.
(5) Tire Identification Number (TIN)
:
The letters and numbers following the
DOT code are the Tire Identification
Number (TIN). The TIN shows the
manufacturer and plant code, tire size,
and date the tire was manufactured.
The TIN is 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 see Tire
Pressure 0208 and
Vehicle Load Limits 0126.