2003 Chevrolet Monte Carlo Owner's Manual - Page 151

2003 Chevrolet Monte Carlo Manual

Page 151 highlights

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? Have you recently changed brands of fuel? If so, be sure to fuel your vehicle with quality fuel. See Gasoline Octane on page5-5. Poor fuel quality will cause your engine not to run as efficiently as designed. You may notice this as stalling after start-up, stalling when you put the vehicle into gear, misfiring, hesitation on acceleration or stumbling on acceleration. (These conditions may go away once the engine is warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or more of these conditions, change the fuel brand you use. It will require at least one full tank of the proper fuel to turn the light off. If so, reinstall the fuel cap, making sure to fully install the cap. See Filling Your Tank on page 5-7. 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. Did you just drive through a deep puddle of water? If so, your electrical system may be wet. The condition will usually be corrected when the electrical system dries out. A few driving trips should turn the light off. Are you low on fuel? As your engine starts to run out of fuel, your engine may not run as efficiently as designed since small amounts of air are sucked into the fuel line causing a misfire. The system can detect this. Adding fuel should correct this condition. Make sure to install the fuel cap properly. See Filling Your Tank on page 5-7. It will take a few driving trips to turn the light off. If none of the above steps have made the light turn off, have your dealer or qualified service center check the vehicle. Your dealer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that may have developed. 3-36

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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. See
Filling
Your
Tank
on page
5-7.
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.
Did you just drive through a deep puddle of water?
If
so,
your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out.
A
few driving trips should turn the light
off.
Are you low on fuel?
As your engine starts to run out of fuel,
your engine
may not run
as
efficiently as designed since small
amounts of air
are sucked into the fuel line causing a
misfire. The system can detect
this. Adding fuel should
correct this condition. Make sure to install the fuel
cap properly. See
Filling
Your
Tank
on
page
5-7.
It will
take a few driving trips to turn the light off.
Have you recently changed brands of fuel?
If
so,
be sure to fuel your
vehicle
with
quality
fuel.
See
Gasoline
Octane
on
page
5-5.
Poor
fuel
quality
will
cause
your engine not to run
as
efficiently
as
designed.
You
may notice this as stalling after
start-up,
stalling
when you put the vehicle
into
gear,
misfiring,
hesitation
on acceleration or stumbling
on
acceleration.
(These
conditions may go away
once
the
engine is warmed
up.)
This will be detected by the system
and
cause
the
light to turn on.
If
you experience one
or
more of these
conditions,
change the fuel brand you
use. It will require
at
least
one full tank of the proper
fuel
to turn the
light
off.
If none of the above steps
have
made
the
light
turn
off,
have
your dealer or qualified
service
center
check
the vehicle.
Your
dealer
has
the
proper
test
equipment
and diagnostic tools to
fix
any
mechanical
or
electrical
problems that may have
developed.
3-36