1996 Chevrolet Tahoe Owner's Manual - Page 126

1996 Chevrolet Tahoe Manual

Page 126 highlights

Malfunction Indicator Lamp (Service Engine Soon Light) (Gasoline Engine) Your vehicle is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. NOTICE: If you keep driving your vehicle with this light on, aftera while, your emission controls may not work as well, your fuel economy may notas be good and your engine may not run smoothly. as This could lead to costly repairs that may be not covered by your warranty. This light should come on, as a check to show you it is working, when the ignition is on and the engine is not running. If the light doesn't come on, have it repaired. This light will also come on during a malfunction in one of two ways: SERVICE ENGINE SOON This system is called OBD I1 (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. (In Canada, OBD I1 is replaced by Enhanced Diagnostics.) The SERVICE ENGINE SOON 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, which may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction. Light Flashing -- A misfire condition has been detected. A misfire increases vehicle emissions and may damage the emission control system on your vehicle. Dealer or qualified service center diagnosis and service is required. Light On Steady -- An emission control system malfunction has been detected on your vehicle. Dealer or qualified service center diagnosis and service may be required. 2-63

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Malfunction
Indicator
Lamp
(Service
Engine
Soon
Light) (Gasoline
Engine)
SERVICE
ENGINE
SOON
Your vehicle
is
equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD I1 (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. (In Canada, OBD
I1
is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
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, which
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 a while,
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.
This light should come on, as a check to show you it is
working, when the ignition is
on
and the engine
is not
running. If the light doesn’t 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. Dealer or qualified service center
diagnosis
and service is required.
Light
On
Steady
--
An emission control
system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
2-63