1993 Chevrolet Suburban Owner's Manual - Page 310

1993 Chevrolet Suburban Manual

Page 310 highlights

Exhaust System To helppreventdamage to yourexhaustsystem,donotcontinue yourvehicle if younotice: Engine misfiring Loss of performance Otherunusualoperatingconditions Haveyourengineandexhaustsystemservicedregularly. Three-Way Catalytic Converter Your vehicle's three-way catalytic converter is designed to reduce the pollutants in yourvehicle'sexhaust.Useonlyunleadedfuelinyourvehicle.If youuseleadedfuel,youcoulddamageyourthree-waycatalyticconverter, and other engine components. Computer Command Control System Thissystemhasanoxygen (OS) sensorthathelpskeepyourengine's air-fuelmixtureataproperlevel.Useonlyunleaded fuel in yourvehicle. If youuseleadedfuel,youcoulddamageyouroxygen (OS) sensorand three-way catalytic converter. TheMalfunctionIndicatorLamp (SERVICE ENGINE SOON) onyour instrumentpanelletsyouknowwhenyouremissioncontrolsystemneeds service.Thelightwillcomeonbrieflywhenyoustartyourenginetoletyou know that the system is working. If it doesnotcomeonwhenyoustartyour engine,or if it comesonandstaysonwhileyou'redrivingyoursystemmay needservice. Your vehicleshouldstillbedriveable,butyoushouldhave your systemservicedright away. Secondary Air Injection (AIR) System Youmay havethissystem.Itletsyouknow if yourenginecontrolmodule, If theMalfunctionIndicator Lamp wiringharnessorsolenoidneedservice. (Service Englne Soon) comeson,youneedservice. to drive 645

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Exhaust
System
To
helppreventdamage
to
your exhaust system, do not continue
to drive
yourvehicle
if
younotice:
Engine
misfiring
Loss
of performance
Other
unusual
operating
conditions
Haveyourengineandexhaustsystemservicedregularly.
Three- Way Catalytic
Converter
Your
vehicle’s three-way catalytic converter
is designed to reduce the
pollutants in your vehicle’s exhaust. Use only unleaded
fuel
in your vehicle.
If
you use
leaded
fuel, you could damage your
three-way catalytic converter,
and other engine components.
Computer
Command
Control
System
This system has an oxygen
(OS)
sensor
that helps keep your engine’s
air-fuelmixtureataproperlevel.Useonlyunleaded
fuel in your vehicle.
If
you use
leaded
fuel, you could damage your oxygen
(OS)
sensor and
three-way catalytic converter.
The Malfunction
Indicator Lamp
(SERVICE
ENGINE
SOON)
on your
instrument panel
lets you know when your emission control system needs
service.Thelightwillcomeonbrieflywhenyoustartyourenginetoletyou
know that the system
is
working.
If
it
does not come on when you start your
engine, or
if
it
comesonandstaysonwhileyou’redrivingyoursystemmay
needservice.
Your
vehicle should still be driveable, but you should have
your
systemservicedright
away.
Secondary
Air
Injection
(AIR)
System
You may
have
this system.
It
lets you know
if
your engine control module,
wiring harness or solenoid need service.
If
the Malfunction
Indicator
Lamp
(Service
Englne
Soon)
comes on, you need service.
645