2020 CHEVROLET EXPRESS check engine light

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
6 Introduction
1.Air Vents 0149.
2. Driver Information Center (DIC) Buttons (Out of View). See
Driver Information Center (DIC)
099.
3. Turn Signal Lever. See Turn
and Lane-Change Signals
0 113.
Windshield Wiper/Washer 080.
4. Horn 080.
5. Hazard Warning Flashers
0113.
6. Instrument Cluster 086.
7. Shift Lever. See Automatic
Transmission 0171.
Manual Mode 0174 (If
Equipped).
8. Climate Control Systems
0144.
9. Infotainment 0117.
10. Power Outlets 083.
11. USB Port (If Equipped). See Auxiliary Devices 0131. 12. Power Outlet 110/120 Volt
Alternating Current. See Power
Outlets 083.
13. Rear Heating System 0146 (If
Equipped).
Lane Departure Warning
(LDW) 0190 (If Equipped).
Forward Collision Alert (FCA)
System 0186 (If Equipped).
14. Passenger Airbag On-Off Switch (If Equipped). See
Airbag On-Off Switch 050.
15. Traction Control/Electronic
Stability Control 0178.
16. Tow/Haul Mode Button (If Equipped). See Tow/Haul
Mode 0175.
17. Steering Wheel Controls 079
(If Equipped).
18. Steering Wheel Adjustment
079 (Out of View), (If
Equipped).
19. Parking Brake Release. See Parking Brake 0177.
20. Cruise Control 0180 (If
Equipped). Fast Idle System
0166 (If
Equipped).
21. Parking Brake 0177.
22. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 093.
23. Instrument Panel Illumination
Control 0114.
Dome Lamp Override. See
Dome Lamps 0114.
24. Exterior Lamp Controls 0110.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Keys, Doors, and Windows 13
.The key is in the ignition.
. The hood is open.
. The hazard warning flashers
are on.
. There is an emission control
system malfunction. See
Malfunction Indicator Lamp
(Check Engine Light) 093.
. The engine coolant temperature
is too high.
. The oil pressure is low.
. The vehicle is not in park.
. Two remote starts or a start with
an extension have already been
provided.
To turn on or off, see Vehicle
Personalization 0105.
Door Locks
{Warning
.
Passengers, especially
children, can easily open
the doors and fall out of a
(Continued)
Warning (Continued)
moving vehicle. When a
door is locked, the handle
will not open it. The chance
of being thrown out of the
vehicle in a crash is
increased if the doors are
not locked. So, all
passengers should wear
seat belts properly and the
doors should be locked
whenever the vehicle is
driven.
. Young children who get into
unlocked vehicles may be
unable to get out. A child
can be overcome by
extreme heat and can suffer
permanent injuries or even
death from heat stroke.
Always lock the vehicle
whenever leaving it.
. Outsiders can easily enter
through an unlocked door
when you slow down or stop
(Continued)
Warning (Continued)
the vehicle. Locking the
doors can help prevent this
from happening.
To lock the door from the inside,
slide the manual lever on the door
down. To unlock the door, slide the
manual lever up.
From the outside, use the key.
If the vehicle is equipped with
Keyless Entry, see Remote Keyless
Entry (RKE) System Operation 09.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
20 Keys, Doors, and Windows
2. PressQon the RKE
transmitter.
3. Close the door and wait for a few seconds.
4. Reach in through the open window, unlock the door with
the manual door lock, and
open the door.
This should set off the alarm.
If the alarm does not sound
when it should but the lamps
flash, check to see if the horn
works. The horn fuse may be
blown. To replace the fuse, see
Fuses and Circuit Breakers
0249.
Immobilizer
See Radio Frequency Statement
0 331.
Immobilizer Operation
This vehicle is equipped with the
PASS-Key®III+ (Personalized
Automotive Security System) theft-deterrent system. PASS-Key III
+ is a passive theft deterrent
system.
The system is automatically armed
when the key is removed from the
ignition.
You do not have to manually arm or
disarm the system.
The security light will come on if
there is a problem with arming or
disarming the theft-deterrent
system.
If the engine does not start and the
security light comes on, the key may
have a damaged transponder. Turn
the ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. If the engine
still does not start with the other key,
the vehicle needs service. If the
vehicle does start, the first key may
be faulty. See your dealer or a
locksmith who can service the
PASS-Key III+ to have a new
key made.
It is possible for the PASS-Key III+
decoder to learn the transponder
value of a new or replacement key.
Up to eight keys may be
programmed for the vehicle. This
procedure is for learning additional
keys only. If all the currently
programmed keys are lost or do not
operate, you must see your dealer
or a locksmith who can service
PASS-Key III+ to have keys made
and programmed to the system.
See your dealer or a locksmith who
can service PASS-Key III+ to get a
new key blank that is cut exactly as
the ignition key that operates the
system.
To program the new key:
1. Verify the new key has
1
stamped on it.
2. Insert the original, already programmed key into the
ignition lock cylinder and start
the engine. If the engine will
not start, see your dealer for
service.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
78 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . 79
Steering Wheel Controls . . . . . . . 79
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Windshield Wiper/Washer . . . . . . 80
Compass . . . . . . . . . . . . . . . . . . . . . . 81
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Power Outlets . . . . . . . . . . . . . . . . . 83
Cigarette Lighter . . . . . . . . . . . . . . . 84
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . 85
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 85
Instrument Cluster . . . . . . . . . . . . . 86
Speedometer . . . . . . . . . . . . . . . . . . 87
Odometer . . . . . . . . . . . . . . . . . . . . . . 87
Trip Odometer . . . . . . . . . . . . . . . . . 87
Fuel Gauge . . . . . . . . . . . . . . . . . . . . 87
Engine Oil Pressure Gauge . . . . 88
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . 89
Voltmeter Gauge . . . . . . . . . . . . . . . 90
Seat Belt Reminders . . . . . . . . . . . 90 Airbag Readiness Light . . . . . . . . 90
Airbag On-Off Light . . . . . . . . . . . . 91
Charging System Light . . . . . . . . . 92
Malfunction Indicator Lamp
(Check Engine Light) . . . . . . . . . 93
Brake System Warning Light . . . 94
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . 95
Tow/Haul Mode Light . . . . . . . . . . 96
Lane Departure Warning (LDW) Light . . . . . . . . . . . . . . . . . . . . . . . . . 96
Vehicle Ahead Indicator . . . . . . . . 96
StabiliTrak OFF Light . . . . . . . . . . 96
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . 97
Tire Pressure Light . . . . . . . . . . . . 97
Engine Oil Pressure Light . . . . . . 97
Low Fuel Warning Light . . . . . . . . 98
Security Light . . . . . . . . . . . . . . . . . . 98
High-Beam On Light . . . . . . . . . . . 98
Cruise Control Light . . . . . . . . . . . 99
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 99
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 104
Engine Power Messages . . . . . 104
Vehicle Speed Messages . . . . . 104
Vehicle Personalization
Vehicle Personalization . . . . . . . 105

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Instruments and Controls 85
Caution (Continued)
heating element when it is hot.
Damage from overheating can
occur to the lighter or heating
element, or a fuse could be
blown. Do not hold a cigarette
lighter in while it is heating.
Ashtrays
If equipped with a removable
ashtray, it can be placed into the
front floor console cupholder. Open
the cover to use.
Caution
If papers, pins, or other
flammable items are put in the
ashtray, hot cigarettes or other
smoking materials could ignite
them and possibly damage the
vehicle. Never put flammable
items in the ashtray.
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Some warning lights come on briefly
when the engine is started to
indicate they are working. When
one of the warning lights comes on
and stays on while driving, or when
one of the gauges shows there may
be a problem, check the section that
explains what to do. Waiting to do
repairs can be costly and even
dangerous.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
90 Instruments and Controls
Voltmeter Gauge
When the engine is not running, but
the ignition is on, this gauge shows
the battery's state of charge in
DC volts.
When the engine is running, the
gauge shows the condition of the
charging system. Readings between
the low and high warning zones
indicate the normal operating range.
Readings in the low warning zone
may occur when a large number of
electrical accessories are operating
in the vehicle and the engine is left
at an idle for an extended period.This condition is normal since the
charging system is not able to
provide full power at engine idle. As
engine speeds are increased, this
condition should correct itself as
higher engine speeds allow the
charging system to create maximum
power.
The vehicle can be only driven for a
short time with the reading in either
warning zone. If it must be driven,
turn off all unnecessary
accessories.
Readings in either warning zone
indicate a possible problem in the
electrical system. Have the vehicle
serviced as soon as possible.
Seat Belt Reminders
Seat Belt Reminder Light
There is a seat belt reminder light
on the instrument cluster.
When the vehicle is started, this
light flashes and a chime may come
on to remind the driver to fasten
their seat belt. Then the light stays
on solid until the belt is buckled.
This cycle may continue several
times if the driver remains or
becomes unbuckled while the
vehicle is moving.
If the driver seat belt is buckled,
neither the light nor the chime
comes on.
Airbag Readiness Light
This light shows if there is an
electrical problem with the airbag
system. The system check includes
the airbag sensor(s), the
pretensioners (if equipped), the
airbag modules, the wiring, and the
crash sensing and diagnostic

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
92 Instruments and Controls
Canada and Mexico
{Warning
If the front outboard passenger
frontal airbag is turned off for a
person who is not in a risk group
identified by the national
government, that person will not
have the extra protection of an
airbag. In a crash, the airbag will
not be able to inflate and help
protect the person sitting there.
Do not turn off the front outboard
passenger frontal airbag unless(Continued)
Warning (Continued)
the person sitting there is in a risk
group identified by the national
government. SeeAirbag On-Off
Switch 050 for more information,
including important safety
information.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. For
example, the front outboard
passenger frontal airbag could
inflate even though the airbag
on-off switch is turned off.
To help avoid injury to yourself or
others, have the vehicle serviced
right away. See Airbag Readiness
Light 090 for more information,
including important safety
information. If the word ON or the on symbol is
lit, it means that the front outboard
passenger frontal airbag is enabled,
and may inflate. See
Airbag On-Off
Switch 050 for more information,
including important safety
information.
Charging System Light
This light comes on briefly when the
ignition key is turned to START, but
the engine is not running, as a
check to show it is working.
If it does not, have the vehicle
serviced by your dealer.
The light should go out once the
engine starts. If it stays on,
or comes on while driving, there
could be a problem with the
charging system. A charging system
message in the Driver Information
Center (DIC) can also appear. This

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13882570) - 2020 - CRC - 11/1/19
Instruments and Controls 93
light could indicate that there are
problems with a generator drive belt,
or that there is an electrical
problem. Have it checked right
away. If the vehicle must be driven a
short distance with the light on, turn
off accessories, such as the radio
and air conditioner.
Malfunction Indicator
Lamp (Check Engine
Light)
This light is part of the vehicle’s
emission control on-board
diagnostic system. If this light is on
while the engine is running, a
malfunction has been detected and
the vehicle may require service. The
light should come on to show that it
is working when the ignition is on
and the engine is not running. See
Ignition Positions0163.
Malfunctions are often indicated by
the system before any problem is
noticeable. Being aware of the light
and seeking service promptly when
it comes on may prevent damage.
Caution
If the vehicle is driven continually
with this light on, the emission
control system may not work as
well, the fuel economy may be
lower, and the vehicle may not
run smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty.
Caution
Modifications to the engine,
transmission, exhaust, intake,
or fuel system, or the use of
replacement tires that do not
meet the original tire
specifications, can cause this light
to come on. This could lead to
(Continued)
Caution (Continued)
costly repairs not covered by the
vehicle warranty. This could also
affect the vehicle’s ability to pass
an Emissions Inspection/
Maintenance test. See
Accessories and Modifications
0216.
If the light is flashing : A
malfunction has been detected that
could damage the emission control
system and increase vehicle
emissions. Diagnosis and service
may be required.
To help prevent damage, reduce
vehicle speed and avoid hard
accelerations and uphill grades.
If towing a trailer, reduce the
amount of cargo being hauled as
soon as possible.
If the light continues to flash, find a
safe place to park. Turn the vehicle
off and wait at least 10 seconds
before restarting the engine. If the
light is still flashing, follow the