2021 CHEVROLET COLORADO check engine light

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
Introduction 5
1.Air Vents 0168.
2. Trailer Brake Control Panel (If Equipped) (Out of View). See “Integrated Trailer
Brake Control System” underTowing
Equipment 0228.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0103.
Driver Information Center (DIC) (Base
Level) Controls (If Equipped). See Driver
Information Center (DIC) (Base Level)
0 93 or
Driver Information Center (DIC) (Uplevel)
0 95.
4. Instrument Cluster 080.
5. Windshield Wiper/Washer 076.
6. Light Sensor. See Automatic Headlamp
System 0102.
Vehicle Alarm System Indicator (If
Equipped). See Vehicle Alarm System
0 14.
7. Infotainment Controls. See Overview
0 109.
8. Climate Control Systems 0163 (If
Equipped).
Automatic Climate Control System 0165
(If Equipped).
9. Heated Front Seats 025 (If Equipped). 10.
Power Outlets 077 (If Equipped).
11. Shift Lever. See Automatic Transmission
0 191 or
Manual Mode 0193.
12. Auxiliary Jack. See the infotainment manual.
USB Port. See the infotainment manual.
13. Hazard Warning Flashers 0103.
Traction Control/Electronic Stability
Control 0202.
Exterior Cargo Lamps 0104.
Lane Departure Warning (LDW) 0216 (If
Equipped).
Hill Descent Control (HDC) 0204 (If
Equipped).
Tow/Haul Mode 0195 (If Equipped).
Locking Front Axle 0207 (If Equipped).
Locking Rear Axle 0206 (If Equipped).
14. Steering Wheel Controls 075 (If
Equipped).
Driver Information Center (DIC) (Uplevel)
Controls (If Equipped). See Driver
Information Center (DIC) (Base Level)
0 93 or
Driver Information Center (DIC) (Uplevel)
0 95. 15.
Horn 076.
16. Steering Wheel Adjustment 075 (Out
of View).
17. Cruise Control 0208.
Forward Collision Alert (FCA) System
0 213 (If Equipped).
18. Transfer Case Knob (If Equipped). See Four-Wheel Drive 0195.
Driver Mode Control 0205 (If Equipped).
19. Hood Release. See Hood0238.
20. Parking Brake 0201.
21. Data Link Connector (DLC) (Out of View). SeeMalfunction Indicator Lamp (Check
Engine Light) 086.
22. Exterior Lamp Controls 0101.
Fog Lamps 0104 (If Equipped).
23. Instrument Panel Illumination Control
0105.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
Keys, Doors, and Windows 15
or the door is not unlocked by pressingK
on the RKE transmitter during the 10-second
pre-alarm, the alarm will be activated.
If a door or the hood is opened without first
disarming the system, the turn signals will
flash and the horn will sound for about
30 seconds. The alarm system will then
re-arm to monitor for the next unauthorized
event.
Disarming the Alarm System
To disarm the alarm system or turn off the
alarm if it has been activated:
.PressKon the RKE transmitter.
.Start the vehicle.
To avoid setting off the alarm by accident:
.Lock the vehicle after all occupants have
left the vehicle and all doors are closed.
.Always unlock a door with the RKE
transmitter.
Unlocking the driver door with the key will
not disarm the system or turn off the alarm.
Detecting a Tamper Condition
IfKis pressed on the RKE transmitter and
the horn chirps three times, an alarm
occurred previously while the alarm system
was armed.
Immobilizer
See Radio Frequency Statement 0336.
Immobilizer Operation
This vehicle has a passive theft-deterrent
system.
The system does not have to be manually
armed or disarmed.
The vehicle is automatically immobilized
when the vehicle is turned off.
The system is automatically disarmed when
the ignition is turned from off to on.
The security light, in the instrument cluster,
comes on if there is a problem with arming
or disarming the theft-deterrent system. When trying to start the vehicle, the
security light comes on briefly when the
ignition is turned on.
If the engine does not start and the security
light stays on, there is a problem with the
system. 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. It may be necessary to check
the fuse. See
Fuses and Circuit Breakers
0 261. 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.
It is possible for the immobilizer system to
learn new or replacement keys. Up to eight
keys can be programmed for the vehicle. To
program additional transmitters, see Remote
Keyless Entry (RKE) System Operation 09.
Do not leave the transmitter or device that
disarms or deactivates the vehicle
theft-deterent system in the vehicle.
See your dealer to get a new key blank cut
exactly as the ignition key that operates the
system.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
Seats and Restraints 25
Heated Front Seats
{Warning
If temperature change or pain to the skin
cannot be felt, the seat heater may cause
burns. To reduce the risk of burns, use
care when using the seat heater,
especially for long periods of time. Do
not place anything on the seat that
insulates against heat, such as a blanket,
cushion, cover, or similar item. This may
cause the seat heater to overheat. An
overheated seat heater may cause a burn
or may damage the seat.
If equipped, the buttons are on the center
stack. To operate, the engine must be
running.
Press
+to heat the driver or passenger
seatback only.
Press
zto heat the driver or passenger
cushion and seatback.
The indicator light comes on when this
feature is on.
Press the button once for the highest
setting. With each press of the button, the
seat will change to the next lower setting,
and then to the off setting. The indicator
lights next to the buttons indicate three for
the highest setting and one for the lowest.
If the heated seats are on high, their level
may automatically be lowered after
approximately 30 minutes.
Remote Start Auto Heated Seats
During a remote start, the heated seats can
be turned on automatically. The heated
seats are canceled when the ignition is
turned on. Press the heated seat button to
use the heated seats after the vehicle is
started.
The heated seat indicator lights do not turn
on during a remote start. The temperature performance of an
unoccupied seat may be reduced. This is
normal.
The heated seats will not turn on during a
remote start unless they are enabled in the
vehicle personalization menu. See
Remote
Vehicle Start 011 and
Vehicle Personalization 098.
Rear Seats
Rear Seat Reminder
If equipped, the message REAR SEAT
REMINDER LOOK IN REAR SEAT displays
under certain conditions indicating there
may be an item or passenger in the rear
seat. Check before exiting the vehicle.
This feature will activate when a second row
door is opened while the vehicle is on or up
to 10 minutes before the vehicle is turned
on. There will be an alert when the vehicle
is turned off. The alert does not directly
detect objects in the rear seat; instead,
under certain conditions, it detects when a
rear door is opened and closed, indicating
that there may be something in the
rear seat.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
Seats and Restraints 39
off using the controls for those features.
If any of these systems are damaged in the
crash they may not operate as normal.
{Warning
A crash severe enough to inflate the
airbags may have also damaged
important functions in the vehicle, such
as the fuel system, brake and steering
systems, etc. Even if the vehicle appears
to be drivable after a moderate crash,
there may be concealed damage that
could make it difficult to safely operate
the vehicle.
Use caution if you should attempt to
restart the engine after a crash has
occurred.
In many crashes severe enough to inflate
the airbag, windshields are broken by
vehicle deformation. Additional windshield
breakage may also occur from the front
outboard passenger airbag.
.Airbags are designed to inflate only once.
After an airbag inflates, you will need
some new parts for the airbag system.
If you do not get them, the airbag
system will not be there to help protect
you in another crash. A new system will include airbag modules and possibly other
parts. The service manual for the vehicle
covers the need to replace other parts.
.The vehicle has a crash sensing and
diagnostic module which records
information after a crash. See
Vehicle
Data Recording and Privacy 0337 and
Event Data Recorders 0338.
.Let only qualified technicians work on the
airbag systems. Improper service can
mean that an airbag system will not work
properly. See your dealer for service.
Passenger Sensing System
The vehicle has a passenger sensing system
for the front outboard passenger position.
The passenger airbag status indicator will
light on the overhead console when the
vehicle is started.
United States
Canada
The words ON and OFF, or the symbols for
on and off, will be visible during the system
check. When the system check is complete,
either the word ON or OFF, or the symbol
for on and off, will be visible. See Passenger
Airbag Status Indicator 085.
The passenger sensing system turns off the
front outboard passenger frontal airbag
under certain conditions. No other airbag is
affected by the passenger sensing system.
The passenger sensing system works with
sensors that are part of the front outboard
passenger seat and seat belt. The sensors
are designed to detect the presence of a
properly seated occupant and determine if
the front outboard passenger frontal airbag
should be allowed to inflate or not.
According to accident statistics, children are
safer when properly secured in a rear seat
in the correct child restraint for their weight
and size.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
74 Instruments and Controls
Instruments and Controls
Controls
Steering Wheel Adjustment . . . . . . . . . . . . . 75
Steering Wheel Controls . . . . . . . . . . . . . . . . 75
Heated Steering Wheel . . . . . . . . . . . . . . . . . 75
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Windshield Wiper/Washer . . . . . . . . . . . . . . 76
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . 77
Warning Lights, Gauges, and Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . 80
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Engine Coolant Temperature Gauge . . . . 84
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 84
Airbag Readiness Light . . . . . . . . . . . . . . . . . 85
Passenger Airbag Status Indicator . . . . . . 85
Charging System Light . . . . . . . . . . . . . . . . . 86
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . . . . . . . . . . . . . . . 86
Brake System Warning Light . . . . . . . . . . . 87 Antilock Brake System (ABS) Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Four-Wheel-Drive Light . . . . . . . . . . . . . . . . . 88
Tow/Haul Mode Light . . . . . . . . . . . . . . . . . . 89
Hill Descent Control Light . . . . . . . . . . . . . . 89
Lane Departure Warning (LDW) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . 89
Traction Off Light . . . . . . . . . . . . . . . . . . . . . . 89
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . 90
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . . . . . . . 90
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . 90
Engine Oil Pressure Light . . . . . . . . . . . . . . . 91
Low Fuel Warning Light (Base Level) . . . . 91
Low Fuel Warning Light (Uplevel) . . . . . . . 91
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 92
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . 92
Lamps On Reminder . . . . . . . . . . . . . . . . . . . . 92
Cruise Control Light . . . . . . . . . . . . . . . . . . . . 92
Door Ajar Light (Uplevel Cluster) . . . . . . . 92
Information Displays
Driver Information Center (DIC) (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . . . . . . . 97 Engine Power Messages . . . . . . . . . . . . . . . . 98
Vehicle Speed Messages . . . . . . . . . . . . . . . . 98
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . . . . . . . . 98

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
80 Instruments and Controls
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.
Instrument Cluster
Base Level English Shown, Metric Similar
1.Tachometer 083
2. Fuel Gauge 083
3. Engine Coolant Temperature Gauge
084
4. Speedometer 082 5.
Driver Information Center (DIC) (Base
Level) 093 or
Driver Information Center (DIC)
(Uplevel) 095

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
86 Instruments and Controls
{Warning
If the airbag readiness light ever comes
on and stays on, it means that
something may be wrong with the airbag
system. To help avoid injury to yourself
or others, have the vehicle serviced right
away. SeeAirbag Readiness Light 085
for more information, including important
safety information.
Charging System Light
The charging system light comes on briefly
when the ignition is turned on, but the
engine is not running, as a check to show
the light is working. The light turns off
when the engine is started. If it does not,
have the vehicle serviced by your dealer. If the light stays on, or comes on while
driving, there may be a problem with the
electrical charging system. Have it checked
by your dealer. Driving while this light is on
could drain the battery.
When this light comes on, the Driver
Information Center (DIC) also displays a
message.
If a short distance must be driven with the
light on, be sure to turn off all 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 Positions 0185.
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 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 0237.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14430421) - 2021 - CRC - 2/10/20
Instruments and Controls 87
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 previous guidelines and see your dealer
for service as soon as possible.
If the light is on steady : A malfunction has
been detected. Diagnosis and service may be
required.
Check the following:
.If fuel has been added to the vehicle
using the capless funnel adapter, make
sure that it has been removed. See
“Filling the Tank with a Portable Gas Can”
under Filling the Tank 0218. The
diagnostic system can detect if the
adapter has been left installed in the
vehicle, allowing fuel to evaporate into the atmosphere. A few driving trips with
the adapter removed may turn off the
light.
.Poor fuel quality can cause inefficient
engine operation and poor driveability,
which may go away once the engine is
warmed up. If this occurs, change the fuel
brand. It may require at least one full
tank of the proper fuel to turn the light
off. See
Recommended Fuel 0217.
If the light remains on, see your dealer.
Emissions Inspection and Maintenance
Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the test
equipment will likely connect to the
vehicle's Data Link Connector (DLC).
The DLC is under the instrument panel to
the left of the steering wheel. Connecting
devices that are not used to perform an
Emissions Inspection/Maintenance test or to service the vehicle may affect vehicle
operation. See
Add-On Electrical Equipment
0 234. See your dealer if assistance is
needed.
The vehicle may not pass inspection if:
.The light is on when the engine is
running.
.The light does not come on when the
ignition is on while the engine is off.
.Critical emission control systems have not
been completely diagnosed. If this
happens, the vehicle would not be ready
for inspection and might require
several days of routine driving before the
system is ready for inspection. This can
happen if the 12-volt battery has recently
been replaced or run down, or if the
vehicle has been recently serviced.
See your dealer if the vehicle will not pass
or cannot be made ready for the test.
Brake System Warning Light
MetricEnglish