2011 CHEVROLET COLORADO check engine

Black plate (13,1)Chevrolet Colorado Owner Manual - 2011
Instruments and Controls 5-13
This light should come on when the
ignition is on, 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.
If the Malfunction Indicator Lamp
comes on and stays on while the
engine is running, this indicates that
there is an OBD II problem and
service is required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system assists
the service technician in correctly
diagnosing any malfunction.Notice:
If the vehicle is
continually driven with this light
on, after a while, the emission
controls might not work as well,
the vehicle fuel economy might
not be as good, and the engine
might not run as smoothly. This
could lead to costly repairs that
might not be covered by the
vehicle warranty.
Notice: Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of the
original tires with other than
those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by the
vehicle warranty. This could also
result in a failure to pass a
required Emission Inspection/
Maintenance test. See
Accessories and Modifications on
page 10‑4. This light comes on during a
malfunction in one of two ways:
Light Flashing:
A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, when
it is safe to do so, stop the vehicle.
Find a safe place to park the
vehicle. Turn the vehicle off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer for service as soon as
possible.

Black plate (14,1)Chevrolet Colorado Owner Manual - 2011
5-14 Instruments and Controls
Light On Steady:An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
The following may correct an
emissions system malfunction:
.Make sure the fuel cap is fully
installed. See Filling the Tank on
page 9‑54. The diagnostic
system can determine if the fuel
cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn the
light off.
.Make sure the electrical system
is not wet. The system could be
wet if the vehicle was driven
through a deep puddle of water.
The condition is usually
corrected when the electrical
system dries out. A few driving
trips should turn the light off.
.Make sure to fuel the vehicle
with quality fuel. Poor fuel quality
causes the engine not to run as
efficiently as designed and can
cause: stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these
conditions occurs, change the
fuel brand used. It will require at
least one full tank of the proper
fuel to turn the light off.
See Recommended Fuel on
page 9‑51.
If none of the above have made the
light turn off, your dealer can check
the vehicle. The dealer has the
proper test equipment and
diagnostic tools to fix any
mechanical or electrical problems
that might have developed.Emissions Inspection and
Maintenance Programs
Some state/provincial and local
governments may have programs to
inspect the on-vehicle emission
control equipment. For the
inspection, the emission system test
equipment is connected to the
vehicle’s Data Link
Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. See your dealer if assistance
is needed.

Black plate (18,1)Chevrolet Colorado Owner Manual - 2011
5-18 Instruments and Controls
When the Light Flashes First and
Then is On Steady
This indicates that there may be a
problem with the Tire Pressure
Monitor System. The light flashes
for about a minute and stays on
steady for the remainder of the
ignition cycle. This sequence
repeats with every ignition cycle.
SeeTire Pressure Monitor
Operation on page 10‑56 for more
information.Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule for changing engine oil. This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer. If the system is working
normally, the indicator light then
goes off.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and it might
have some other system problem.
Security Light
For information regarding this light
and the vehicle's security system,
see
Anti-Theft Alarm System on
page 2‑9.

Black plate (24,1)Chevrolet Colorado Owner Manual - 2011
5-24 Instruments and Controls
Door Ajar Messages
DOORS
This message displays when one or
more of the doors is ajar. Check all
the doors on your vehicle to make
sure they are closed. The message
clears from the display after all of
the doors are closed.
Engine Cooling System
Messages
AC (Air Conditioning) OFF
This message displays when the
engine coolant temperature is too
high and the air conditioning in your
vehicle needs to be turned off. See
Engine Overheating on page 10‑23
andClimate Control Systems on
page 8‑1 for more information. This
message displays along with the
ENG HOT message.
ENG (Engine) HOT
This message displays when the
engine coolant temperature is hot.
Check the engine coolant
temperature gauge. See Engine
Coolant Temperature Gauge on
page 5‑9. Have your vehicle
serviced by your dealer as soon as
possible if you suspect the engine is
overheating. See Engine
Overheating on page 10‑23 for more
information.
Engine Oil Messages
CHANGE OIL
This message displays when the oil
needs to be changed. Check the oil
in your vehicle as soon as possible
and have your vehicle serviced by
your dealer. See Engine Oil on
page 10‑9 andScheduled
Maintenance on page 11‑2 for more
information. Press and release the
reset stem to acknowledge the
message and clear it from the
display.
OIL
This message displays when the oil
pressure is low. See Engine Oil
Pressure Light on page 5‑18 and
Engine Oil on page 10‑9 for more
information.
Engine Power Messages
REDUCED POWER
This message displays when the
vehicle's engine power is reduced.
Reduced engine power can affect
the vehicle's ability to accelerate.
If this message is on, but there
is no reduction in performance,
proceed to your destination. The
performance may be reduced the
next time the vehicle is driven. The
vehicle may be driven at a reduced
speed while this message is on, but
acceleration and speed may be
reduced. Anytime this message
stays on, the vehicle should be
taken to your dealer for service as
soon as possible. Press and release

Black plate (25,1)Chevrolet Colorado Owner Manual - 2011
Instruments and Controls 5-25
the reset stem to acknowledge the
message and clear it from the
display.
Fuel System Messages
FUEL CAP
This message displays if the
vehicle's fuel cap is either off or
loose. Pull over as soon as possible
and check to see if the fuel cap is
secure. You may also see the check
engine light on the instrument panel
cluster. If the check engine light
does come on when the fuel cap
was loose, it may take a few driving
trips before the light turns off. See
Malfunction Indicator Lamp on
page 5‑12for more information if the
light still remains on. Press and
release the reset stem to
acknowledge the message and
clear it from the display.
LOW FUEL
This message displays if the level of
fuel in the vehicle is low. Also check
the fuel gauge. See Fuel Gauge on
page 5‑8 for more information. Refill
the fuel tank as soon as possible.
Lamp Messages
TURN SIGNAL
This message displays when the
turn signal is on for about 1.2 km
(0.75 miles) of travel. Press and
release the reset stem to
acknowledge the message and
clear it from the display.
Ride Control System
Messages
SERVICE STAB (Stability) SYS
(System)
This message displays if there is a
problem with the StabiliTrak system.
Have your vehicle serviced by your
dealer. See StabiliTrak
®System on
page 9‑47 for more information.
STAB (Stability) SYS
(System) OFF
This message displays when the
StabiliTrak system is turned off. See
StabiliTrak
®System on page 9‑47
for more information.
TRAC (Traction) OFF
This message displays when the
Traction Control System (TCS) is
turned off by pressing the
StabiliTrak button. See StabiliTrak
®
System on page 9‑47for more
information.
TRACTION FAULT
This message will display if there is
a problem with the TCS. Have your
vehicle serviced by your dealer. See
StabiliTrak
®System on page 9‑47
for more information. Press and
release the reset stem to
acknowledge the message and
clear it from the display.

Black plate (8,1)Chevrolet Colorado Owner Manual - 2011
9-8 Driving and Operating
You will find other important
information underVehicle Load
Limits on page 9‑20 andTires on
page 10‑46.
Environmental Concerns
Off-road driving can provide
wholesome and satisfying
recreation. However, it also raises
environmental concerns. We
recognize these concerns and urge
every off-roader to follow these
basic rules for protecting the
environment:
.Always use established trails,
roads, and areas that have been
specially set aside for public
off-road recreational driving and
obey all posted regulations.
.Avoid any driving practice that
could damage shrubs, flowers,
trees, or grasses or disturb
wildlife. This includes
wheel-spinning, breaking down
trees, or unnecessary driving
through streams or over soft
ground.
.Always carry a litter bag and
make sure all refuse is removed
from any campsite before
leaving.
.Take extreme care with open
fires (where permitted), camp
stoves, and lanterns.
.Never park your vehicle over dry
grass or other combustible
materials that could catch fire
from the heat of the vehicle's
exhaust system.
Traveling to Remote Areas
It makes sense to plan your trip,
especially when going to a remote
area. Know the terrain and plan
your route. Get accurate maps of
trails and terrain. Check to see if
there are any blocked or closed
roads.
It is also a good idea to travel with
at least one other vehicle in case
something happens to one of them. For vehicles with a winch, be sure to
read the winch instructions. In a
remote area, a winch can be handy
if you get stuck but you will want to
know how to use it properly.
Getting Familiar with Off-Road
Driving
It is a good idea to practice in an
area that is safe and close to home
before you go into the wilderness.
Off-roading requires some new and
different skills.
Tune your senses to different kinds
of signals. Your eyes need to
constantly sweep the terrain for
unexpected obstacles. Your ears
need to listen for unusual tire or
engine sounds. Use your arms,
hands, feet, and body to respond to
vibrations and vehicle bounce.

Black plate (15,1)Chevrolet Colorado Owner Manual - 2011
Driving and Operating 9-15
accelerating, and braking. Drive at a
reduced speed and avoid sharp
turns or abrupt maneuvers.
Hard packed snow and ice offer the
worst tire traction. On these
surfaces, it is very easy to lose
control. On wet ice, for example, the
traction is so poor that you will have
difficulty accelerating. And, if the
vehicle does get moving, poor
steering and difficult braking can
cause it to slide out of control.
{WARNING
Driving on frozen lakes, ponds,
or rivers can be dangerous.
Underwater springs, currents
under the ice, or sudden thaws
can weaken the ice. Your vehicle
could fall through the ice and you
and your passengers could
drown. Drive your vehicle on safe
surfaces only.
Driving in Water
{WARNING
Driving through rushing water can
be dangerous. Deep water can
sweep your vehicle downstream
and you and your passengers
could drown. If it is only shallow
water, it can still wash away the
ground from under your tires, and
you could lose traction and roll
the vehicle over. Do not drive
through rushing water.
Heavy rain can mean flash flooding,
and flood waters demand extreme
caution.
Find out how deep the water is
before driving through it. Do not try
it if it is deep enough to cover the
wheel hubs, axles, or exhaust
pipe —you probably will not get
through. Deep water can damage
the axle and other vehicle parts. If the water is not too deep, drive
slowly through it. At faster speeds,
water splashes on the ignition
system and the vehicle can stall.
Stalling can also occur if you get the
tailpipe under water. If the tailpipe is
under water, you will never be able
to start the engine. When going
through water, remember that when
the brakes get wet, it might take
longer to stop. See
Driving on Wet
Roads on page 9‑16.
After Off-Road Driving
Remove any brush or debris that
has collected on the underbody,
chassis, or under the hood. These
accumulations can be a fire hazard.
After operation in mud or sand,
have the brake linings cleaned and
checked. These substances can
cause glazing and uneven braking.
Check the body structure, steering,
suspension, wheels, tires, and
exhaust system for damage and
check the fuel lines and cooling
system for any leakage.

Black plate (17,1)Chevrolet Colorado Owner Manual - 2011
Driving and Operating 9-17
Other driving tips include:
.Keep the vehicle well ventilated.
.Keep interior temperature cool.
.Keep your eyes moving—scan
the road ahead and to the sides.
.Check the rearview mirror and
vehicle instruments often.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips for
driving in these conditions include:
.Keep the vehicle serviced and in
good shape.
.Check all fluid levels and brakes,
tires, cooling system, and
transmission.
.Shift to a lower gear when going
down steep or long hills.
{WARNING
If you do not shift down, the
brakes could get so hot that they
would not work well. You would
then have poor braking or even
none going down a hill. You could
crash. Shift down to let the engine
assist the brakes on a steep
downhill slope.
{WARNING
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. The brakes will have
to do all the work of slowing down
and they could get so hot that
they would not work well. You
would then have poor braking or
even none going down a hill. You
could crash. Always have the
engine running and the vehicle in
gear when going downhill.
.Stay in your own lane. Do not
swing wide or cut across the
center of the road. Drive at
speeds that let you stay in your
own lane.
.Top of hills: Be alert —
something could be in your
lane (stalled car, accident).
.Pay attention to special road
signs (falling rocks area, winding
roads, long grades, passing or
no-passing zones) and take
appropriate action.
Winter Driving
Driving on Snow or Ice
Drive carefully when there is snow
or ice between the tires and the
road, creating less traction or grip.
Wet ice can occur at about 0°C
(32°F) when freezing rain begins to
fall, resulting in even less traction.
Avoid driving on wet ice or in
freezing rain until roads can be
treated with salt or sand.