2003 Pontiac Montana Owner's Manual - Page 222

2003 Pontiac Montana Manual

Page 222 highlights

If the Light Is On Steady You 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 ~I-I-IWUI-I~S i air art: su~kt:d w illiw i ~ iuei iirre causing Ce 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. 3-45

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If
the Light
Is
On
Steady
You
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
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.
~I-I-IWUI-I~S
wi
air
art:
su~kt:d
illiw
iC~e
iuei
iirre
causing
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.
3-45