2020 CHEVROLET EXPRESS engine overheat
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Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
236 Vehicle Care
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” underTrailer Towing
0 201.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral) and let the
engine idle. If the engine coolant temperature
gauge is no longer in the overheat
zone or an overheat warning no
longer displays, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe vehicle distance from the
vehicle in front. If the warning does
not come back on, continue to drive
normally and have the cooling
system checked for proper fill and
function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is still no sign of steam,
push down the accelerator until the
engine speed is about twice as fast
as normal idle speed for at least
three minutes while parked. If the
warning is still on, turn off the
engine until it cools down.
If the decision is made not to lift the
hood, get service help right away.
Engine Fan
The vehicle has a clutched engine
cooling fan. When the clutch is
engaged, the fan spins faster to
provide more air to cool the engine.
In most everyday driving conditions,
the fan is spinning slower and the
clutch is not fully engaged. This
improves fuel economy and reduces
fan noise. Under heavy vehicle
loading, trailer towing, and/or high
outside temperatures, the fan speed
increases as the clutch more fully
engages, so an increase in fan
noise may be heard. This is normal
and should not be mistaken as the
transmission slipping or making
extra shifts. It is merely the cooling
system functioning properly. The fan
will slow down when additional
cooling is not required and the
clutch partially disengages.
This fan noise may be heard when
starting the engine. It will go away
as the fan clutch partially
disengages.
Page 348 of 356
Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Index 347
Driving (cont'd)Loss of Control . . . . . . . . . . . . . . . 154
Off-Road Recovery . . . . . . . . . . . 154
Vehicle Load Limits . . . . . . . . . . . 158
Wet Roads . . . . . . . . . . . . . . . . . . . 155
Winter . . . . . . . . . . . . . . . . . . . . . . . . 156
Dual Tire
Rotation . . . . . . . . . . . . . . . . . . . . . . 270
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 193
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 213
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 249
Floor Console Fuse Block . . . . 253
Fuses and Circuit Breakers . . . 249
Overload . . . . . . . . . . . . . . . . . . . . . 248
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 336
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 229
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . 93
Compartment Overview . . . . . . . 218
Coolant Heater . . . . . . . . . . . . . . . 167
Coolant Temperature Gauge . . . . 89 Engine (cont'd)
Cooling System . . . . . . . . . . . . . . . 230
Drive Belt Routing . . . . . . . . . . . . 320
Exhaust . . . . . . . . . . . . . . . . . . . . . . 170
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Oil Life System . . . . . . . . . . . . . . . 224
Oil Pressure Gauge . . . . . . . . . . . . 88
Oil Pressure Light . . . . . . . . . . . . . . 97
Overheating . . . . . . . . . . . . . . . . . . 235
Power Messages . . . . . . . . . . . . . 104
Running While Parked . . . . . . . . 171
Starting . . . . . . . . . . . . . . . . . . . . . . . 165
Enhanced Technology Glass . . . . 24
Entry Lighting . . . . . . . . . . . . . . . . . . . 115
Entry/Exit Lighting . . . . . . . . . . . . . . 115
Equipment, Towing . . . . . . . . . . . . . 208
Event Data Recorders . . . . . . . . . . 333
Exit Lighting . . . . . . . . . . . . . . . . . . . . 115
Extender, Seat Belt . . . . . . . . . . . . . . 42
Exterior Lamp Controls . . . . . . . . . 110
Exterior Lamps Off Reminder . . . 111
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 116
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 236
Fast Idle System . . . . . . . . . . . . . . . . 166 Filter,
Engine Air Cleaner . . . . . . . . . . . 229
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 111
Flashers, Hazard Warning . . . . . . 113
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 276 Changing . . . . . . . . . . . . . . . . . . . . . 278
FlexFuel
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 302
Fluid Automatic
Transmission . . . . . . . . . . . 225, 228
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 239
Power Steering . . . . . . . . . . . . . . . 237
Washer . . . . . . . . . . . . . . . . . . . . . . . 237
Folding Mirrors . . . . . . . . . . . . . . . . . . 22
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 186
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 331
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 27
Front Storage . . . . . . . . . . . . . . . . . . . . 76
Front Turn Signal Bulb Replacement . . . . . . . . . . . . 245
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 192
Economy, Driving for Better . . . 151
Page 351 of 356
Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
350 Index
Manual Mirrors . . . . . . . . . . . . . . . . . . 21
Manual Mode . . . . . . . . . . . . . . . . . . . 174
Manual Windows . . . . . . . . . . . . . . . . 23
MediaAvoiding Untrusted Devices . . 126
Messages Engine Power . . . . . . . . . . . . . . . . 104
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 104
Vehicle Speed . . . . . . . . . . . . . . . . 104
Mirrors Convex . . . . . . . . . . . . . . . . . . . . . . . . . 21
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 22
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 22
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 21
Manual Rearview . . . . . . . . . . . . . . . 22
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . 21
Mirrors, Interior Rearview . . . . . . . . 22
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 264
Multi-band Antenna . . . . . . . . . . . . . 126
N
Navigation
Connected Services . . . . . . . . . . 341
New Vehicle Break-In . . . . . . . . . . . 162
Noise Control System . . . . . . . . . . 241
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . 87
Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 154
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 222
Engine Oil Life System . . . . . . . 224
Engine Oil Pressure Gauge . . . . . 88
Pressure Light . . . . . . . . . . . . . . . . . . 97
Older Children, Restraints . . . . . . . 55
Online Owner Center . . . . . . . . . . . 324
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 334
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 337
OnStar Emergency . . . . . . . . . . . . . 336
OnStar Overview . . . . . . . . . . . . . . . 335
OnStar Security . . . . . . . . . . . . . . . . 337
OnStar System . . . . . . . . . . . . . . . . . 136
Operation Infotainment System . . . . . . . . . . 121
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Overheating, Engine . . . . . . . . . . . . 235
Overview . . . . . . . . . . . . . . . . . . 118, 120
Instrument Panel . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . 170
Park Assist . . . . . . . . . . . . . . . . . . . . . 185
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 177
Brake and P (Park)Mechanism Check . . . . . . . . . . 243
Over Things That Burn . . . . . . . 170
Perchlorate Materials
Requirements, California . . . . . . 216
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 105
Phone
Bluetooth . . . . . . . . . . . . . . . . . . . . . 136
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 14
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . 83
Protection, Battery . . . . . . . . . . . . .116
Retained Accessory (RAP) . . . 167
Seat Adjustment . . . . . . . . . . . . . . . . 27
Steering Fluid . . . . . . . . . . . . . . . . . 237
Windows . . . . . . . . . . . . . . . . . . . . . . . 23
Pregnancy, Using Seat Belts . . . . 41
Privacy Vehicle Data Recording . . . . . . . 333