2006 CHEVROLET EPICA check engine light

Immobilizer
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Immobilizer Operation
Your vehicle may have a passive theft-deterrent system.
The immobilizer system prevents your vehicle from
being started by unauthorized persons.
If your vehicle has an immobilizer system, your vehicle
has a special key that works with the theft-deterrent
system. There is a transponder in the key head that
is electronically coded. The correct key will start
the vehicle. An invalid key immobilizes the engine.
The immobilizer system isolates the power supply to
the ignition system, the fuel pump and the fuel injectors.
The engine immobilizer is activated after the ignition
is turned to LOCK and the key is removed from
the ignition. The security light located on the top center
of the instrument panel, near the windshield, will
flash when the immobilizer is active. If the light does
not flash after removing the key, have the system
checked by your dealer.
The immobilizer system works when you turn the key
to START. If the immobilizer system does not recognize
the electronic code, the engine will not start and the
security indicator will continue blinking. If your key
is ever damaged, you may not be able to start your
vehicle.
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When trying to start the vehicle, if the engine does
not start and the security light continues flashing, 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 key. At this time, you
may also want to check the fuse. SeeFuses and Circuit
Breakers on page 5-77. If the engine still does not
start with the other key, your vehicle needs service.
If your vehicle does start, the first key may be faulty.
See your dealer who can service the theft-deterrent
system to have a new key made.
Up to four keys may be programmed for the vehicle.
If you lose or damage your keys, only a GM dealer
can service the theft-deterrent system to have new
keys made.
If you are ever driving and the security light comes on
and stays on, you will be able to restart your engine
if you turn it off. The theft-deterrent system, however,
is not working properly and must be serviced by
your dealer. Your vehicle is not protected by the
theft-deterrent system at this time.
In an emergency, contact Chevrolet Roadside
Assistance. SeeRoadside Assistance Program
on page 7-6.Starting and Operating
Your Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run
if you follow these guidelines:
Do not drive at any one constant speed, fast
or slow, for the rst 500 miles (805 km).
Do not make full-throttle starts. Avoid
downshifting to brake, or slow, the vehicle.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new
brake linings are not yet broken in. Hard stops
with new linings can mean premature wear
and earlier replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. See
Towing a Trailer on page 4-35for the trailer
towing capabilities of your vehicle and more
information.
Following break-in, engine speed and load can
be gradually increased.
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If there is a malfunction with the automatic transaxle,
the Check Engine Light or the HOLD light will turn on
or flash. See Check Engine Light underMalfunction
Indicator Lamp on page 3-40orHold Mode Light
on page 3-39.
Have your vehicle fixed as soon as possible.
Hold Mode
Your vehicle’s transaxle has a hold mode.
Press the HOLD button
on the console below
the shift lever to turn
on hold mode.
Press the button again to turn off hold mode, and
return to normal automatic transaxle operation.While on, the HOLD light on the instrument panel will
light up. SeeHold Mode Light on page 3-39.
When hold mode is activated, the transaxle operates
in the following ways:
•When the transaxle is in AUTOMATIC
OVERDRIVE (D), the transaxle operates in a gear
range of SECOND (2) to THIRD (3) to AUTOMATIC
OVERDRIVE (D) and tries to maintain AUTOMATIC
OVERDRIVE (D) for as long as possible.
•When the transaxle is in THIRD (3), the transaxle
operates in a gear range of SECOND (2) to
THIRD (3) and tries to maintain THIRD (3) for
as long as possible.
•When the transaxle is in SECOND (2), the transaxle
is fixed in that gear.
•When the transaxle is in FIRST (1), the transaxle is
fixed in that gear.
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Warning Lights, Gages,
and Indicators
This part describes the warning lights and gages
that may be on your vehicle. The pictures will help
you locate them.
Warning lights and gages can signal that something
is wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention
to your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you
will see in the details on the next few pages, some
warning lights come on briefly when you start the engine
just to let you know they’re working. If you are familiar
with this section, you should not be alarmed when
this happens.Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there’s a problem with your vehicle.
When one of the warning lights comes on and stays
on as you are driving, or when one of the gages shows
there may be a problem, check the section that tells
you what to do about it. Please follow this manual’s
advice. Waiting to do repairs can be costly — and
even dangerous. So please get to know your warning
lights and gages. They’re a big help.
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{CAUTION:
If the airbag readiness light in the instrument
panel cluster ever comes on and stays on,
it means that something may be wrong with
the airbag system. If this ever happens,
have the vehicle serviced promptly, because
an adult-size person sitting in the right
front passenger’s seat may not have the
protection of the frontal airbag and side
airbag (if equipped). SeeAirbag Readiness
Light on page 3-32for more on this,
including important safety information.
Charging System Light
The charging system light
will come on briefly when
you turn on the ignition,
and the engine is not
running, as a check
to show you it is working.
Then it should go out when the engine is started.
If it stays on, or comes on while you are driving, you
may have a problem with the electrical charging system.
Have it checked by your GM dealer. Driving while this
light is on could drain your battery.
If you must drive a short distance with the light on,
be certain to turn off all your accessories, such as the
radio and air conditioner.
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Anti-Lock Brake System
Warning Light
If your vehicle has an
anti-lock brake system,
this light will come on
when the ignition is
turned to ON and may
stay on for several
seconds. That is normal.
If the light stays on, turn the ignition to LOCK. Or,
if the light comes on, stop as soon as possible and turn
the ignition off. Then start the engine again to reset
the system. If the light still stays on, or comes on again
while you are driving, your vehicle needs service.
See your GM dealer. If the regular brake system warning
light is not on, you still have brakes, but you do not
have anti-lock brakes. If the regular brake system
warning light is also on, you do not have anti-lock brakes
and there is a problem with your regular brakes. See
Brake System Warning Light on page 3-36.
The anti-lock brake system warning light will come on
briefly when you turn the ignition to ON. This is normal.
If the light does not come on then, have it fixed so it
will be ready to warn you if there is a problem.
Speed Sensitive Power
Steering (SSPS) Warning Light
This warning light will
come on briefly when you
turn the ignition to ON
as a check to show you it
is working.
Then it should go out after a few seconds.
If the warning light does not come on, have it fixed so it
will be able to warn you if there is a problem.
If the warning light stays on, or comes on while you are
driving, the SSPS system may not be working. If this
happens, see your GM dealer for service.
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Engine Coolant Temperature Gage
Your vehicle has an
engine coolant temperature
gage. With the ignition
turned to ON, this
gage shows the engine
coolant temperature.
If the gage pointer moves into the red area, your engine
is too hot. It means that your engine coolant has
overheated.
If you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
SeeEngine Overheating on page 5-22.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the life of the vehicle, helping to produce a cleaner
environment. The Check Engine light comes on
to indicate that there is a problem and service is
required. Malfunctions often will be indicated by the
system before any problem is apparent. This may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls may not
work as well, your fuel economy may not be as good,
and your engine may not run as smoothly. This
could lead to costly repairs that may not be covered
by your warranty.
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Notice:Modications made to the engine,
transaxle, exhaust, intake, or fuel system of your
vehicle or replacement tires that do not match your
vehicle’s original tires can affect your vehicle’s
emission controls and may cause this light to come
on. Modications to these systems could lead to
costly repairs not covered by your warranty.
This may also result in a failure to pass a required
Emission Inspection/Maintenance test. See
Accessories and Modifications on page 5-3.
When the ignition is on, this light should come on and
should go out after a few seconds as a check to
show you it is working. If the light does not come on,
have it repaired.
This light will also come on during a malfunction in
one of two ways:
•Light Flashing— A misfire condition has been
detected. A misfire increases vehicle emissions
and may damage the emission control system
on your vehicle. Diagnosis and service may
be required.
•Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
•Reducing vehicle speed
•Avoiding hard accelerations
•Avoiding steep uphill grades
If the light stops flashing and remains on steady,
see “If the Light Is On Steady” following.
If the light continues to flash, when it is safe to do
so, stop the vehicle. Find a safe place to park your
vehicle. Turn the key off, wait at least 10 seconds
and restart the engine. If the light remains on steady,
see “If the Light Is On Steady” following. If the light
is still flashing, follow the previous steps, and see
your dealer for service as soon as possible.
If the Light Is On Steady
You also may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install the
cap. SeeFilling the Tank on page 5-8. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. A loose or missing fuel cap will allow
fuel to evaporate into the atmosphere. A few driving trips
with the cap properly installed should turn the light off.
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