2021 CHEVROLET EXPRESS CARGO washer fluid

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 67
While listening to a CD, press and hold¨to
quickly move forward through the tracks.
Release to stop on the desired track.
+
e: Press to increase volume.
−
e: Press to decrease volume.
Horn
Press the horn symbol on the steering
wheel to sound the horn.
Windshield Wiper/Washer
The lever is on the left side of the steering
column.
Turn the band with
Non it to select the
wiper speed.
8: Use for a single wipe. Hold the band
on
z, then release. For several wipes,
hold the band on
zlonger.
6: Use to adjust the delay time between
wipes. Turn the band up for more frequent
wipes or down for less frequent wipes.
d: Fast wipes.
a:Slow wipes.
9:Use to turn the wipers off.
When driving during the day and the wipers
are activated, the headlamps automatically
turn on after completing eight wipe cycles.
{Warning
In freezing weather, do not use the
washer until the windshield is warmed.
Otherwise the washer fluid can form ice
on the windshield, blocking your vision.
{Warning
Before driving the vehicle, always clear
snow and ice from the hood, windshield,
washer nozzles, roof, and rear of the
vehicle, including all lamps and windows.
Reduced visibility from snow and ice
buildup could lead to a crash. Clear ice and snow from the wiper blades
before using them. If frozen to the
windshield, carefully loosen or thaw them.
Damaged blades should be replaced.
Windshield Washer
The windshield wiper paddle is on top of the
turn signal lever.
L:
Push the paddle to spray washer fluid
on the windshield. The wipers will clear the
window and then either stop or return to
the preset speed.
Compass
This vehicle may have a compass in the
Driver Information Center (DIC).
Compass Zone
Your dealer will set the correct zone for
your location.
Under certain circumstances, such as during
a long distance cross-country trip or moving
to a new state or province, it will be
necessary to compensate for compass
variance by resetting the zone through the
DIC if the zone is not set correctly.
Compass variance is the difference between
the earth's magnetic north and true
geographic north. If the compass is not set

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 85
the tire positions, seeTire Pressure Monitor
System 0218. See Tire Inspection 0221 and
Tire Rotation 0221.
Change Compass Zone
The vehicle may have this feature. To
change the compass zone through the DIC,
see Compass 067.
Calibrate Compass
The vehicle may have this feature. The
compass can be manually calibrated. To
calibrate the compass through the DIC, see
Compass 067.
Blank Display
This display shows no information.
Vehicle Messages
Messages displayed on the DIC indicate the
status of the vehicle or some action that
may be needed to correct a condition.
Multiple messages may appear one after
another.
The messages that do not require
immediate action can be acknowledged and
cleared by pressing
V. The messages that
require immediate action cannot be cleared
until that action is performed. All messages should be taken seriously;
clearing the message does not correct the
problem.
If a SERVICE message appears, see your
dealer.
Follow the instructions given in the
messages. The system displays messages
regarding the following topics:
.Service Messages
.Fluid Levels
.Vehicle Security
.Brakes
.Steering
.Ride Control Systems
.Driver Assistance Systems
.Cruise Control
.Lighting and Bulb Replacement
.Wiper/Washer Systems
.Doors and Windows
.Seat Belts
.Airbag Systems
.Engine and Transmission
.Tire Pressure
.Battery
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the vehicle's
propulsion power is reduced. A reduction in
propulsion power can affect the vehicle's
ability to accelerate. If this message is on,
but there is no observed reduction in
performance, proceed to your destination.
Under certain conditions the performance
may be reduced the next time the vehicle is
driven. The vehicle may be driven while this
message is on, but maximum acceleration
and speed may be reduced. Anytime this
message stays on, or displays repeatedly,
the vehicle should be taken to your dealer
for service as soon as possible.
Under certain operating conditions,
propulsion will be disabled. Try restarting
after the ignition has been off for
30 seconds.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 129
Defensive drivers avoid most skids by taking
reasonable care suited to existing conditions,
and by not overdriving those conditions. But
skids are always possible.
If the vehicle starts to slide, follow these
suggestions:
.Ease your foot off the accelerator pedal
and steer the way you want the vehicle
to go. The vehicle may straighten out. Be
ready for a second skid if it occurs.
.Slow down and adjust your driving
according to weather conditions. Stopping
distance can be longer and vehicle control
can be affected when traction is reduced
by water, snow, ice, gravel, or other
material on the road. Learn to recognize
warning clues—such as enough water,
ice, or packed snow on the road to make
a mirrored surface —and slow down
when you have any doubt.
.Try to avoid sudden steering, acceleration,
or braking, including reducing vehicle
speed by shifting to a lower gear. Any
sudden changes could cause the tires to
slide.
Remember: Antilock brakes help avoid only
the braking skid.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop and
accelerate. Always drive slower in these
types of driving conditions and avoid driving
through large puddles and deep-standing or
flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick stop
and could cause pulling to one side. You
could lose control of the vehicle.
After driving through a large puddle of
water or a car/vehicle wash, lightly apply
the brake pedal until the brakes work
normally.
Flowing or rushing water creates strong
forces. Driving through flowing water
could cause the vehicle to be carried
away. If this happens, you and other
vehicle occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive through
flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can build
up under the vehicle's tires so they actually
ride on the water. This can happen if the
road is wet enough and you are going fast
enough. When the vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to slow
down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather
driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment in
good shape.
.Keep the windshield washer fluid reservoir
filled.
.Have good tires with proper tread depth.
See Tires 0212.
.Turn off cruise control.

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Vehicle Care 177
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 178
California Proposition 65 Warning . . . . . 178
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 178
Accessories and Modifications . . . . . . . . . 178
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 179
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Engine Compartment Overview . . . . . . . . 181
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Engine Oil Life System . . . . . . . . . . . . . . . . 186
Automatic Transmission Fluid (6-Speed Transmission) . . . . . . . . . . . . . . . . . . . . . . . . 186
Automatic Transmission Fluid (8-Speed Transmission) . . . . . . . . . . . . . . . . . . . . . . . . 189
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 189
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 191
Engine Overheating . . . . . . . . . . . . . . . . . . . 194
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Power Steering Fluid . . . . . . . . . . . . . . . . . . 196
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Battery - North America . . . . . . . . . . . . . . . 199
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Noise Control System . . . . . . . . . . . . . . . . . 199 Starter Switch Check . . . . . . . . . . . . . . . . . . 200
Automatic Transmission Shift Lock
Control Function Check . . . . . . . . . . . . . . 201
Ignition Transmission Lock Check . . . . . . 201
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Wiper Blade Replacement . . . . . . . . . . . . . 201
Windshield Replacement . . . . . . . . . . . . . . 202
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 202
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 202
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 202
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . 202
Taillamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Center High-Mounted Stoplamp (CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 204
Electrical System
Electrical System Overload . . . . . . . . . . . . 205
Fuses and Circuit Breakers . . . . . . . . . . . . . 205
Engine Compartment Fuse Block . . . . . . 206
Floor Console Fuse Block . . . . . . . . . . . . . . 210
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 212
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . 213
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 214
Tire Terminology and Definitions . . . . . . 215
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Tire Pressure Monitor System . . . . . . . . . 218
Tire Pressure Monitor Operation . . . . . . . 218
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 221
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
When It Is Time for New Tires . . . . . . . . 223
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 223
Different Size Tires and Wheels . . . . . . . . 225
Uniform Tire Quality Grading . . . . . . . . . . 225
Wheel Alignment and Tire Balance . . . . 226
Wheel Replacement . . . . . . . . . . . . . . . . . . . 226
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 227
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 229
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . 236
Jump Starting
Jump Starting - North America . . . . . . . . 237
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . 240
Recreational Vehicle Towing . . . . . . . . . . . 240
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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182 Vehicle Care
1.Battery - North America 0199.
2. Radiator Pressure Cap. See Cooling
System 0191.
3. Coolant Recovery Tank. See Cooling
System 0191.
4. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0184.
5. Engine Cooling Fan (Out of View). See Cooling System 0191.
6. Engine Air Cleaner/Filter 0189.
7. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil 0184.
8. Power Steering Fluid Reservoir. See Power Steering Fluid 0196.
9. Engine Compartment Fuse Block 0206.
10. Brake Master Cylinder Reservoir. See Brake Fluid 0197.
11. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” underWasher
Fluid 0196.

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184 Vehicle Care
10. Brake Master Cylinder Reservoir. SeeBrake Fluid 0197.
11. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” underWasher
Fluid 0196.
Engine Oil
For diesel engine vehicles, see “Engine Oil”
in the Duramax diesel supplement.
To ensure proper engine performance and
long life, careful attention must be paid to
engine oil. Following these simple, but
important steps will help protect your
investment:
.Use engine oil approved to the proper
specification and of the proper viscosity
grade. See “Selecting the Right Engine
Oil” in this section.
.Check the engine oil level regularly and
maintain the proper oil level. See
“Checking Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the appropriate
time. SeeEngine Oil Life System 0186.
.Always dispose of engine oil properly. See
“What to Do with Used Oil” in this
section.
Checking Engine Oil
Check the engine oil level regularly, every
650 km (400 mi), especially prior to a long
trip. The engine oil dipstick handle is a loop.
See Engine Compartment Overview 0181 for
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 the oil level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the engine
oil level after the engine has been off for
at least two hours. Checking the engine
oil level on steep grades or too soon after
engine shutoff can result in incorrect
readings. Accuracy improves when
checking a cold engine prior to starting.
Remove the dipstick and check the level.
.If unable to wait two hours, the engine
must be off for at least 15 minutes if the
engine is warm, or at least 30 minutes if
the engine is not warm. Pull out the dipstick, wipe it with a clean paper towel
or cloth, then push it back in all the way.
Remove it again, keeping the tip down,
and check the level.
When to Add Engine Oil
4.3L V6 Engine
6.6L V8 Engine
If the oil is below the cross-hatched area at
the tip of the dipstick and the engine has
been off for at least 15 minutes, add
1 L (1 qt) of the recommended oil and then
recheck the level. See “Selecting the Right
Engine Oil” later in this section for an

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196 Vehicle Care
Power Steering Fluid
The power steering fluid reservoir is in the
engine compartment on the driver side of
the vehicle. SeeEngine Compartment
Overview 0181 for reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering fluid unless there is a leak
suspected in the system or an unusual noise
is heard. A fluid loss in this system could
indicate a problem. Have the system
inspected and repaired.
How to Check Power Steering Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartment cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a clean rag. 4. Replace the cap and completely
tighten it.
5. Remove the cap again and look at the fluid level on the dipstick.
The level should be at the COLD FILL mark.
If necessary, add only enough fluid to bring
the level up to the mark.
To prevent contamination of brake fluid,
never check or fill the power steering
reservoir with the brake master cylinder
cover off.
What to Use
Caution
Use of the incorrect fluid may damage
the vehicle and the damages may not be
covered by the vehicle warranty. Always
use the correct fluid listed in
Recommended Fluids and Lubricants
0257.
To determine what kind of fluid to use, see
Recommended Fluids and Lubricants 0257.
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 0181 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.
(Continued)

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Vehicle Care 197
Caution (Continued)
.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 0261.
Brake pads should be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not
return to normal height, or if there is a
rapid increase in pedal travel. This could be
a sign that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts with
new, approved replacement parts. If this is
not done, the brakes may not work
properly. The braking performance can
change in many ways if the wrong brake
parts are installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir is filled
with DOT 3 brake fluid. See Engine
Compartment Overview 0181 for the
location of the reservoir.