2017 CHEVROLET EXPRESS overheating

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15555951) - 2022 - CRC - 1/27/22
Vehicle Care 187
7. By this time, the coolant level inside theradiator filler neck may be lower. If the
level is lower, add more of the proper
mixture through the filler neck until the
level reaches the base of the filler neck.
8. Replace the pressure cap. At any time during this procedure if coolant begins to
flow out of the filler neck, reinstall the
pressure cap.
Caution
If the pressure cap is not tightly installed,
coolant loss and engine damage may
occur. Be sure the cap is properly and
tightly secured.
Engine Overheating
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
Caution
Do not run the engine if there is a leak
in the engine cooling system. This can
cause a loss of all coolant and can
damage the system and vehicle. Have
any leaks fixed right away. The vehicle has an indicator to warn of
engine overheating.
There is an engine coolant temperature
gauge on the vehicle's instrument cluster.
See
Engine Coolant Temperature Gauge
0 74.
If the decision is made not to lift the hood
when this warning appears, but instead get
service help right away, see Roadside
Assistance Program 0262.
If the decision is made to lift the hood,
make sure the vehicle is parked on a level
surface.
Then check to see if the engine cooling fans
are running. If the engine is overheating, the
fan should be running. If it is not, do not
continue to run the engine and have the
vehicle serviced.
See if the engine cooling fan speed increases
when idle speed is doubled by pushing the
accelerator pedal down. If it does not, the
vehicle needs service. Turn off the engine.
If Steam is Coming from the Engine
Compartment
{Warning
Steam and scalding liquids from a hot
cooling system are under pressure.
Turning the pressure cap, even a little,
can cause them to come out at high
speed and you could be burned. Never
turn the cap when the cooling system,
including the pressure cap, is hot. Wait
for the cooling system and pressure cap
to cool.
If No Steam is Coming from the Engine
Compartment
If an engine overheat warning is displayed
but no steam can be seen or heard, the
problem may not be too serious. Sometimes
the engine can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer. See “Driving on Grades”
under Trailer Towing 0159.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15555951) - 2022 - CRC - 1/27/22
204 Vehicle Care
Circuit Breakers UsageCB1 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)
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 Tires0205.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15555951) - 2022 - CRC - 1/27/22
210 Vehicle Care
Traction:The friction between the tire
and the road surface. The amount of
grip provided.
Tread
:The portion of a tire that comes
into contact with the road.
Treadwear Indicators
:Narrow bands,
sometimes called wear bars, that show
across the tread of a tire when only
1.6 mm (1/16 in) of tread remains. See
When It Is Time for New Tires 0216.
UTQGS (Uniform Tire Quality Grading
Standards)
:A tire information system
that provides consumers with ratings
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
See Uniform Tire Quality Grading 0218.
Vehicle Capacity Weight
:The number
of designated seating positions
multiplied by 68 kg (150 lb) plus the
rated cargo load. See Vehicle Load
Limits 0126. Vehicle Maximum Load on the Tire
:
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Vehicle Placard
:A label permanently
attached to a vehicle showing the
vehicle capacity weight and the original
equipment tire size and recommended
inflation pressure. See “Tire and Loading
Information Label” underVehicle Load
Limits 0126.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
{Warning
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
.Tire overloading and overheating,
which could lead to a blowout.
.Premature or irregular wear.
.Poor handling.
(Continued)
Warning (Continued)
.Reduced fuel economy.
Overinflated tires, or tires that have
too much air, can result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from road
hazards.
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity.
For additional information regarding
how much weight the vehicle can carry,
and an example of the Tire and Loading
Information label, see Vehicle Load
Limits 0126. How the vehicle is loaded
affects vehicle handling and ride

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15555951) - 2022 - CRC - 1/27/22
Index 281
Engine (cont'd)Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . 181
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 73
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 81
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 86
Running While Parked . . . . . . . . . . . . . . . . . . 137
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Enhanced Technology Glass . . . . . . . . . . . . . . . 20
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 167
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 268
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .35
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . .91
Exterior Lamps Off Reminder . . . . . . . . . . . . . .91
Exterior Lighting Battery Saver . . . . . . . . . . . 96
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 182
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . 103
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 93
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Flat Tire (cont'd)
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Fluid Automatic Transmission . . . . . . . . . . . . . . . . 181
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . 188
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Forward Collision Alert (FCA) System . . . . 149
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Front Turn Signal Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 195
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Economy, Driving for Better . . . . . . . . . . . . 121
Filling a Portable Fuel Container . . . . . . . 155
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 154
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 154
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Low Fuel Warning Light . . . . . . . . . . . . . . . . 81
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 153
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 153
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 230
Fuses
Engine Compartment Fuse Block . . . . . . . 199
Floor Console Fuse Block . . . . . . . . . . . . . . . 202
Fuses and Circuit Breakers . . . . . . . . . . . . . 198
G
GaugesEngine Coolant Temperature . . . . . . . . . . . . 74
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 73
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Warning Lights and Indicators . . . . . . . . . . . 71
General Information
Service and Maintenance . . . . . . . . . . . . . . 244
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Glass, Enhanced Technology . . . . . . . . . . . . . . 20
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 93
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15555951) - 2022 - CRC - 1/27/22
Index 283
Lights (cont'd)Lane Departure Warning . . . . . . . . . . . . . . . . 79
Low Fuel Warning . . . . . . . . . . . . . . . . . . . . . . 81
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 75
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . . 79
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . . . . . . . 80
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . 144
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . 12
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 12
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . . 12
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . .81
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . . . . . . . . .53
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Maintenance Schedule . . . . . . . . . . . . . . . . . . . 245 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Malfunction Indicator Lamp . . . . . . . . . . . . . . . .77
Manual Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Manual Windows . . . . . . . . . . . . . . . . . . . . . . . . . .19
Media Avoiding Untrusted Devices . . . . . . . . . . . . 103
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Mirrors
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 19
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . .18
Monitor System, Tire Pressure . . . . . . . . . . . . 211
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . 103
N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 275
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 129
Noise Control System . . . . . . . . . . . . . . . . . . . . 192
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Engine Oil Life System . . . . . . . . . . . . . . . . . . 181
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 73
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Older Children, Restraints . . . . . . . . . . . . . . . . . 46
Online Owner Center . . . . . . . . . . . . . . . . . . . . 261
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
OnStar Additional Information . . . . . . . . . . . 272
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . . 271
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . . . . 270
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Operation Infotainment System . . . . . . . . . . . . . . . . . . . 99
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . .187