GMC Chevrolet Camaro 1998 User manual

! SERVICE
MANUAL
l~I Camaro
lIJ Firebird
VOLUME 1 OF 3
GMP /98 , f- l'F.

1998 Chevrolet Camara
and Pontiac Firebird
Service Manual
Volume 1
This manual provides information on the diagnosis, the service procedures, the adjustments,
and the specifications for the 1998 Chevrolet Camaro and Pontiac Firebird. This is the second
edition of the 1998 Chevrolet Camaro and Pontiac Firebird Service Manual. This manual
contains new and updated information that will help you diagnose and service vehicles. If you
are
in the possession of the early edition of this manual GMP/98-F Volumes 1, 2, and 3 please
DISCARD it because the information is outdated.
Information
on transmission unit repair (overhaul) can be found in the 1998
Transmission/Transaxle/Transfer Case Unit Repair Manual (TURM), GMPT/98-TURM, available
separately. The TURM manual contains information
on automatic and manual transmissions,
including the fluid flow and circuit description information.
The technicians who understand the
material~ this manual and in the appropriate Dealer
Service Bulletins better serve the vehicle owners.
When this manual refers to a brand name, a part number, or a specific tool, you may use an
equivalent product
in place of the recommended item. All information, illustrations, and
specifications
in this manual are based on the latest product information available at the time of
publication approval. General Motors reserves the right to make changes at any time without
notice.

) TABLE OF CONTENTS
Volume 1 Volume 2
Preface ................................................................ 1
Cautions and Notices .
.. .... ........ .... .. .. .. .... . .... . .... .. 3
General Information ....................................... 0-1
General Information ......................................... 0-3
Maintenance and Lubrication ......................... 0-33
Vibration Diagnosis and Correction ................ 0-45
HVAC ................................................................ 1-1
HVAC System -Manual .. .. ...... .. .. .. .. .... .. . .. . .. .. .. 1-3
Body and Accessories .... .... .. .... .. ........ ........ .. 8-1
Lighting Systems ........................................... 8-15
Wipers/Washer Systems ..............................
8-161
Entertainment .............................................. 8-195
Wiring Systems ........................................... 8-282
Body Control System ................................... 8-425
Instrument Panel, Gauges and Console ....... 8-467
Keyless Entry
.. . .. . .. . .. .. .. . .... .. .. .... . .. ...... .. .. .. .. . 8-545
Horns .......................................................... 8-560
Theft Deterrent
.. . .. . .. .. .... .. .. ...... .. .. .. . .. . .. . .. . .... 8-569
Cruise Control ............................................. 8-601
Retained Accessory Power .......................... 8-640
Exterior Trim ............................................... 8-647
Waterleaks .................................................. 8-658
Air/Wind Noise ............................................ 8-665
Squeaks and Rattles
.... .......... .... ........ .. . ...... 8-667
Stationary Windows
.. .. .. .. .. .... . .... . .. . .. .. .. . .... .. . 8-683
Bumpers .....................................................
8- 712
Body Front End ........................................... 8-734
Doors .......................................................... 8-771
Roof ............................................................ 8-825
Seats .......................................................... 8-896
Interior Trim ................................................ 8-939
Body Rear End
...... . .. .... .. .. .... . .... . .. .. .. .. .... . .. . 8-955
Plastic Panel Information and Repair ........... 8-987
PainVCoatings ........................................... 8-1014
Frame and Underbody ............................... 8-1022
Collision Repair ......................................... 8-1080
Restraints ......................................................... 9-1
Seat Belts .. ... .. .... . .. .. .... .... ........ . .. .... .. .. .... .. .. . .. . 9-3
SIR ............................................................... 9-20
INDEX ........................................................INDEX-1
Preface ................................................................ 1
Cautions and Notices .. .. .... . .. ...... .... . .. . ...... . .... .. .. . 3
Steering ............................................................ 2-1
Power Steering System ............ ...... .. ........ .. .... . 2-3
Steering Wheel and Column -Tilt ................. 2-51
Suspension .. .. .. . .. . .. . .. . .. . .... .... .. .... .... .. . .. .. .. ... .. . .. 3-1
Suspension General Diagnosis .. ...... ...... ........ .. 3-3
Wheel Alignment ............................................. 3-7
Front Suspension .......................................... 3-12
Rear Suspension .. .. .... .. ........ .. ........ .............. . 3-43
Tires and Wheels .......................................... 3-58
Driveline/Axle .................................................. 4-1
Propeller Shaft . .... . .... ..... ...... . .. . .. . .. . .... .. .. .. .. . .... 4-3
Rear Drive Axle .. .. .. .. .......... .. .................. . .... . 4-23
Brakes .............................................................. 5-1
Hydraulic Brakes .... . .. . .. . ...... . .. . .. ... .. . .. ... .. ... .. . .. . 5-5
Disc Brakes
.. . .. ... .... .... . .... ... .. .... ...... . .. . ...... . .. . 5-68
Park Brake . .. . ...... . .... . .... . .. . .... .. .. .... . .... .. . .. ...... 5-92
Antilock Brake System .......... . .. . .. .... . .. .... .... . 5-108
INDEX ........................................................INDEX-1
Volume 3
Preface ................................................................ 1
Cautions and Notices ...... . .. .. .. . .... .... . .. .......... .. .... 3
Engine .............................................................. 6-1
Engine Mechanical -3.8L .............,................ 6-13
Engine Mechanical -5.7L ............................ 6-229
Engine Cooling ............................................ 6-580
Engine Electrical
...... . .. . .. .. .. . .. . .. . .. .... .. . .. .. .. .. . 6-665
Engine Controls -3.8L ................................ 6-725
Engine Controls -5.7L .............................. 6-1247
Engine Exhaust ......................................... 6-1900
Transmission/Transaxle .... . .. .. .. . .. .... .. . .. .. .... .. . 7-1
Manual Transmission -M49 ............................ 7-5
Manual Transmission -MM6 ......................... 7-28
Automatic Transmission -4L60-E .................. 7-56
Clutch ......................................................... 7-359
INDEX ........................................................INDEX-1

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Preface Table of Contents - 1
Cautions and Notices
Cautions and Notices .........................................3 SIR lnflator Module Disposal Caution ................5
Definition of Caution, Notice, and Important ......3 SIR lnflator Module Handling and Storage
ABS Handling Caution ......................................3 Caution .........................................................5
Battery Disconnect Caution ...............................3 SIR Special Tool Caution ..................................5
Brake Dust Caution ..........................................3 Vehicle Lifting Caution ......................................5
Brake Fluid Caution .........................................
.4
Window Removal Caution .................................5
Clutch Dust Caution .........................................
.4
Window Retention Caution ................................5
Electric Coolant Fan Caution ............................4 Work Stall Test Caution ....................................6
Fuel and EVAP Pipe Caution ........................... .4
Fuel Gauge Leak Caution .................................4
Fuel Pipe Fitting Caution ................................. .4
Fuel Storage Caution ........................................4
Gasoline/Gasoline Vapors Caution ...................
.4
Lower 0-Ring Removal Caution ........................4
Moving Parts and Hot Surfaces Caution ..........
.4
Relieving Fuel Pressure Caution ...................... .4
Road Test Caution .......................................... .4
Safety Glasses and Compressed Air Caution ....5
Safety Goggles and Fuel Caution .....................5
Seat Belt Replacement Caution ........................5
Defective Scan Tool Notice ...............................6
Fastener Notice ................................................6
Fuel Pressure Notice ........................................6
Handling ESD Sensitive Parts Notice ................6
Handling IAC Valve Notice ...............................7
Ignition OFF When Disconnecting Battery
Notice ...........................................................7
Latched
OTC 81018, 81024 Notice
(SDM-RSD) ...................................................7
Nylon Fuel Lines Notice ....................................7
OBDII System Description Notice ......................7
SIR Caution ......................................................5 PCM and ESD Notice .......................................7
SIR Handling Caution .......................................5 Servicing and Replacing Seat Belts Notice .......7
)

2 - Table of ,Contents Preface
(
BLANK (
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Preface
Cautions and Notices
Definition of Caution, Notice, and
Important
The diagnosis and repair procedures in the GM
Service Manual contain both general and specific
Cautions, Notices, and lmportants.
GM is dedicated to
the presentation of service information that helps
the technician to diagnose and repair the systems
necessary for the proper operation of the vehicle,
however, certain procedures may present a hazard to
the technician if they are not followed
in the
recommended manner. Cautions, Notices, and
lmportants are elements designed to prevent these
hazards, however, not all hazards can be foreseen.
This information
is placed at strategic locations within
the service manual. This information
is designed to
prevent the following from occurring:
• Serious bodily injury to the technician
• Damage to the vehicle
• Unnecessary vehicle repairs
• Unnecessary component replacement
• Improper repair or replacement of vehicle
components. Any caution or notice that appears
in
general information is referenced from the
individual service categories.
CAUTION Defined
When encountering a CAUTION, you will be asked to
take a necessary action or not to take a prohibited
action. If a CAUTION
is not heeded, the following
consequences may occur:
• Serious bodily injury to the technician
• Serious bodily injury to other technicians
in the
workplace area
• Serious bodily injury to the driver and/or
passenger(s) of the vehicle, if the vehicle
has
been improperly repaired
NOTICE Defined
Notices call special attention to a necessary action or
to a prohibited action. If a NOTICE
is not heeded,
the following consequences may occur:
• Damage to the vehicle
• Unnecessary vehicle repairs
• Unnecessary component replacement
• Improper operation or performance of the system
or component under repair
• Damage to any systems or components which are
dependent upon the proper operation of the
system or component under repair
• Improper operation or performance of any
systems or components which are dependent
upon the proper operation or performance of the
system or component under repair
• Damage to fasteners, basic tools, or special tools
•
The leakage of coolant, lubricant, or other vital
fluids
Cautions and Notices - 3
IMPORTANT Defined
IMPORTANT statements emphasize a necessary
characteristic of a diagnostic or repair procedure.
IMPORTANT statements are designed to do
the following:
• Clarify a procedure
• Present additional information for accomplishing a
procedure
• Give insight into the reason or reasons for
performing a procedure
in the manner
recommended
• Present information that will help to accomplish a
procedure
in a more effective manner
• Present information that gives the technician the
benefit of past experience
in accomplishing a
procedure with greater ease
ABS Handling Caution
Caution: Certain components in the Antilock Brake
System (ABS) are not intended to be serviced
individually. Attempting to remove
or disconnect
certain system components
may result in personal
injury and/or improper system operation. Only
those components with approved removal
and installation procedures should be serviced.
Battery Disconnect Caution
Caution: Before servicing any electrical
component, the ignition key must be in the
OFF or
LOCK position and all electrical loads must be
OFF, unless instructed otherwise in these
procedures.
If a tool or equipment could easily
come in contact with a live exposed electrical
terminal, also disconnect the negative battery
cable. Failure to follow these precautions
may cause personal injury and/or damage
to the
vehicle
or its components.
Brake Dust Caution
Caution: Avoid taking the following actions when
you service wheel brake parts:
• Do not grind brake linings.
• Do not sand brake linings.
• Do not clean wheel brake parts with a dry
brush
or with compressed air.
Some models or aftermarket brake parts may
contain asbestos fibers which can become
airborne in dust. Breathing dust with asbestos
fibers
may cause serious bodily harm. Use a
water-dampened cloth in order to remove
any dust
on brake parts. Equipment is available
commercially in order to perform this washing
function. These wet methods prevent fibers from
becoming airborne.

4 .. Cautions and Notices
Brake Fluid Caution
Caution: Brake fluid may be irritating to the skin
or eyes. In case of contact, take the following
actions:
• Eye contact-rinse eyes thoroughly with water.
• Skin
contact-wash skin with soap and water.
Clutch Dust Caution
Caution: When servicing clutch parts, do not
create dust by grinding or sanding the clutch disc
or by cleaning parts with a dry .brush or with
compressed air. A water-dampened cloth-NOT
SOAKED-should be used. The clutch disc
contains asbestos fibers which can become
airborne if dust is created during servicing.
Breathing dust containing asbestos fibers may
cause serious bodily harm.
Electric Coolant Fan Caution
Caution: An electric fan under the hood can start
up even when the engine is not running and
can injure you. Keep hands, clothing and tools
away from any underhood electric fan.
Fuel and EVAP Pipe Caution
Caution: In order to reduce the risk of fire and
personal injury observe the following items:
• Replace
all nylon fuel pipes that are nicked,
scratched or damaged during installation,
do not attempt to repair the sections of
the nylon fuel pipes
• Do not hammer directly on the fuel harness
body clips when installing new fuel pipes.
Damage
to the nylon pipes may result
in a fuel leak.
•
Always cover nylon vapor pipes with a wet
towel before using a torch near them. Also,
never expose .the vehicle to temperatures
higher than 115°C (239°F) for more than one
hour,
or more than 90°C (194°F) for any
extended period.
•
Apply a few drops of clean engine oil to the
male
pipe ends before connecting fuel pipe
fittings. This will ensure proper reconnection
and prevent a possible fuel leak. (During
normal operation, the 0-rings located in the
female
connector will swell and may prevent
proper reconnection if not lubricated.)
Fuel Gauge Leak Caution
Caution: Wrap a shop towel around the fuel
pressure connection in order to reduce the risk of
fire and personal injury. The towel will absorb
any fuel leakage that occurs during the connection
of the fuel pressure gauge. Place the towel in an
approved container when the connection of
the fuel pressure gauge is complete.
Preface
Fuel Pipe Fitting Caution
Caution: Always apply a few drops of clean engine
oil to the male pipe ends before connecting fuel
pipe fittings in order to reduce the risk of fire and
personal injury.
This will ensure
proper reconnection and prevent
a possible fuel leak.
During
normal operation, the 0-rings located in
the female connector will swell and may prevent
proper reconnection if not lubricated.
Fuel Storage Caution
Caution: Do not drain the fuel into an open
container. Never
store the fuel in an open
container due to the
possibility of a fire or an
explosion.
Gasoline/Gasoline Vapors Caution
Caution: Gasoline or gasoline vapors are highly
flammable. A fire could occur if an ignition source
is present. Never drain
or store gasoline or
diesel fuel in an open container, due to the
possibility of fire or explosion. Have a dry chemical
(Class B) fire
extinguisher nearby.
Lower 0-Ring Removal Caution
Caution: Verify that the lower (small) 0-ring of
each injector does not remain in the lower
manifold in order to reduce the risk of fire and
personal injury.
If the 0-ring is not removed with the injector, the
replacement
injector with new 0-rings will not seat
properly in the injector socket. Improper seating
could cause a fuel leak.
Moving Parts and Hot Surfaces Caution
Caution: While working around a running engine,
avoid contact with moving parts and hot surfaces
to prevent
possible bodily injury.
Relieving Fuel Pressure Caution
Caution: Relieve the fuel system pressure before
servicing fuel system components
in order to
reduce the risk of fire and personal injury.
After relieving the system pressure, a small
amount of fuel may be released when servicing
the fuel lines
or connections. In order to reduce the
chance
of personal injury, cover the regulator
and the fuel line fittings with a shop towel before
disconnecting. This
will catch any fuel that
may leak out. Place the towel in an approved
container when the disconnection is complete.
Road Test Caution
Caution: Road test a vehicle under safe conditions
and while obeying all traffic laws. Do not attempt
any maneuvers that could jeopardize vehicle
control. Failure to adhere to these precautions
could lead to serious personal injury.
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)
Preface
Safety Glasses and Compressed Air
Caution
Caution: Wear safety glasses when using
compressed
air in order to prevent eye injury.
Safety Goggles and Fuel Caution
Caution: Always wear safety goggles when
working with fuel in order to
protect the eyes from
fuel splash.
Seat Belt Replacement Caution
Caution: To help avoid personal injury from
unrepaired crash damage to a restraint system:
• Replace each seat belt system worn during
a crash unless the crash was minor.
• Perform the seat
belt check for each seat belt
system. Replace the seat belt system if there
is
any doubt about the condition of system
components.
SIR Caution
Caution: This vehicle has a Supplemental Inflatable
Restraint (SIR) System. Refer to SIR Component
Views in
order to determine whether you are
performing service on
or near the SIR components
or the SIR wiring. When you are performing
service
on or near the SIR components or the SIR
wiring, refer
to Repair Instructions in SIR. Failure
to follow the CAUTIONS
could cause air bag
deployment,
personal injury, or unnecessary SIR
system repairs.
SIR Handling Caution
Caution: When you are performing service on or
near the SIR components or the SIR wiring,
you
must disable the SIR system. Refer to
Disabling the SIR System. Failure to follow the
correct procedure
could cause air bag deployment,
personal injury,
or unnecessary SIR system
repairs.
SIR lnflator Module Disposal Caution
Caution: In order to prevent accidental deployment
of the air bag which could cause personal injury,
do
not dispose of an undeployed inflator module
as normal shop waste. The undeployed inflator
module contains substances that
could cause
severe illness
or personal injury if the sealed
container
is damaged during disposal. Use the
following deployment procedures
to safely dispose
of an undep/oyed inflator module. Failure to
dispose
of an inflator module as instructed may
be a violation
of federal, state, province,
or loci Jaws.
Cautions and Notices - 5
SIR lnflator Module Handling and Storage
Caution
Caution: When you are carrying an undeployed
inflator module:
•
Do not carry the inflator module by the wires
or connector on the lnflator module
• Make sure the
bag opening points away
from
you
When you are storing an undeployed inf/ator
module, make
sure the bag opening points away
from the surface on which the inf/ator module
rests. When
you are storing a steering column, do
not rest the column with the bag opening facing
down
and the column vertical. Provide free
space
for the air bag to expand in case of an
accidental deployment. Otherwise,
personal injury
may result.
SIR Special Tool Caution
Caution: In order to avoid deploying the air bag
when troubleshooting the SIR system, use only the
equipment specified In
this manual and the
instructions
given in this manual. Failure to use
the specified
equipment as instructed could cause
air bag deployment, personal injury to you or
someone else, or unnecessary SIR system repairs.
Vehicle Lifting Caution
Caution: To avoid any vehicle damage, serious
personal injury or death when components
are removed from the vehicle
and the vehicle is
supported by a hoist, perform the following steps:
• Chain the vehicle
to the hoist at the same end
as the components that are being removed.
•
Support the vehicle at the opposite end from
which the
components are being removed.
Window Removal Caution
Caution: When working with any type of glass, use
approved
safety glasses and gloves to reduce
the chance
of personal injury.
Window Retention Caution
Caution: When replacing stationary windows,
Urethane
Adhesive Kit GM PIN 12346392, or
a urethane adhesive system meeting GM
Specification GM3651
M, must be used to maintain
original installation integrity. Failure to use the
urethane adhesive
kit will result in poor retention
of the window which may allow unrestrained
occupants
to be ejected from the vehicle resulting
in
personal injury.

6 - Cautions and Notices
Work Stall Test Caution
Caution: One or more of the following guidelines
may apply when performing specific required tests
in the work stall:
• When a test requires spinning the drive
wheels with the vehicle
jacked up, adhere to
the
following precautions:
-Do not exceed 56 km/h (35 mph) when
spinning one drive wheel with the
other drive Wheel stopped. This limit is
necessary because the
speedometer
indicates only one-half the actual vehicle
speed under these conditions. Personal
injury may result from excessive
wheel spinning.
If all of the drive wheels are spinning at
the same speed, do not exceed 112 km/h
(70 mph). Personal
injury may result
from excessive wheel spinning.
All persons should stay clear of the
rotating components and the balance
weight areas in order to avoid possible
personal injury.
-When running an engine in the repair stall
for an extended period of time, use care
not to overheat the engine and the
transmission.
• When a
test requires jacking up the vehicle
and running with the wheels and brake
rotors removed, adhere to the following
precautions:
- Support the suspension of all drive
wheels at normal ride height.
-Do not apply the brake with the brake
rotors removed.
-Do not place the transmission in PARK
with the
drive wheels still spinning.
-Turn Off the ignition in order to stop the
powertrain components from spinning.
Defective Scan Tool Notice
Notice: Do not use a scan tool that displays faulty
data. Report the scan tool problem to the
manufacturer. Use of a faulty scan tool can result
in
misdiagnosis and unnecessary parts replacement.
Preface
Fastener Notice
Notice: Use the correct fastener in the correct
location. Replacement fasteners must be the correct
part number for that application. Fasteners requiring
replacement or fasteners requiring the use of
thread locking compound or sealant are identified
in
the service procedure. Do not use paints, lubrican1s, or
corrosion inhibitors
on fasteners or fastener joint
surfaces unless specified. These coatings affect
fastener torque and joint clamping force and may
damage the fastener. Use the correct tightening
sequence and specifications when installing fasteners
in order to avoid damage to parts and systems.
Fuel Pressure Notice
Notice: Do not allow the fuel pressure to exceed !he
specified value because damage to the fuel
pressure regulator or the fuel pressure gauge
may
result.
Handling ESD Sensitive Parts Notice
Notice: Electrostatic discharge (ESD) can damage
many solid-state electrical components. ESD
susceptible components may or may not be labeled
with the ESD symbol. Handle all electrical components
carefully. Use the following precautions
in order to
avoid ESD damage:
• Touch a metal ground point
in order to remove
your body's static charge before servicing
any
electronic component; especially after sliding
across the vehicle seat.
•
Do not touch exposed terminals. Terminals may
connect to circuits susceptible the ESD damage.
•
Do not allow tools to contact exposed terminals
when servicing connectors.
•
Do not remove components from their protective
packaging until required to
do so.
• Avoid the following actions unless required
by the
diagnostic procedure:
-Jumpering or grounding of the components
or connectors.
-Connecting test equipment probes to
components or connectors. Connect
the ground lead first when using test probes.
• Ground the protective packaging of any
component before opening.
Do not rest solid-state
components
on metal workbenches, or on top
of TVs, radios, or other electrical devices.
(

Preface
Handling IAC Valve Notice
Notice: If the IAC valve has been in service: DO NOT
push
or pull on the IAC valve pintle. The force
required to move the pintle may damage the threads
on the worm drive. Also, DO NOT soak the IAC
valve
in any liquid cleaner or solvent, as damage may
result.
Ignition OFF When Disconnecting Battery
Notice
Notice: Always turn the ignition OFF when connecting
or disconnecting battery cables, battery chargers, or
jumper cables. Failing to do so may damage the
Powertrain Control Module (PCM) or other electronic
components.
Latched DTC 81018, 81024 Notice
(SDM-RSD)
Notice: When OTC 81018 or 81024 has been set it is
necessary to replace the inflatable restraint Sensing
and Diagnostic Module
(SOM). Setting OTC 81018 or
81024 will also cause
DTC 81071 to set. When a
scan tool clear codes command
is issued and
the malfunction is no longer present, DTC 81018 or
81024 and
OTC 81071 will remain current. Make sure
that
the short to ground condition is repaired prior
to installing a replacement
SOM to avoid
damaging the
SOM.
Nylon Fuel Lines Notice
Notice: Do not attempt to straighten any kinked nylon
fuel lines. Replace any kinked nylon fuel feed
or
return pipes in order to prevent damage to the vehicle.
08011 System Description Notice
Notice: The 080 II symbol is used on the circuit
diagrams
in order to alert the technician that the circuit
is essential for proper 080 II emission control
circuit operation. Any circuit which,
if it fails causes the
Malfunction Indicator Lamp (MIL}
to turn on, is
identified as an 08011 circuit.
Cautions and Notices - 7
PCM and ESD Notice
Notice: Do not touch the connector pins or soldered
components
on the circuit board in order to prevent
possible electrostatic discharge (ESD) damage to
the
PCM.
Servicing and Replacing Seat Belts Notice
Notice: To prevent possible seat belt damage, refer
to the following items before servicing or replacing lap
and shoulder belts, including single loop belt
systems:
• Lap and shoulder belts will be serviced as follows:
-Replace only the part
in question.
-
All belts need to be serviced as a set to
assure the belt components are from
the same supplier.
-
Do not intermix standard and deluxe belts on
front or rear seats.
-
All attachment hardware must be replaced,
not reused.
• Keep sharp edges and damaging objects away
from belts.
• Avoid bending or damaging any portion of the belt
buckle or latch plate.
•
.Do not bleach or dye belt or strap webbing. Clean
with a mild soap solution and water.
• When installing lap or shoulder belt anchor bolts,
start the bolts by hand to ensure that the bolts
are threaded straight.
•
Do not attempt repairs on lap or shoulder belt
retractor mechanisms
to lap belt retractor
covers. Replace defective assemblies with new
service replacement parts.
•
Do not attempt to remove the seat belt retractor
cover. The cover and the long rivet securing
the cover to the retractor are not available
as service replacement parts.

8 - Cautions and Notices Preface
BLANK
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General Information Table of Contents
0-1
) Section O
General Information
General Information .........................................0-3 Maintenance ..................................................0-34
Conversion -English/Metric ............................0-3 Maintenance Schedule .................................0-34
Equivalents -Decimal and Metric ...................0-3 Maintenance Schedule -
Arrows and Symbols ......................................0-4 Short Trip/City ..........................................0-35
Special Tools Ordering Information ................0-5 Maintenance Schedule -
Diagnostic Work Sheets .................................0-5 Long Trip/Highway ....................................0-37
Vehicle Identification ......................................0-5 Explanation of Scheduled Services ..............0-39
VIN Derivative ...............................................0-6 Inspections and Other Services ....................0-41
Label -Vehicle Certification ...........................0-6 Periodic Maintenance Inspection
Tire Placard ...................................................0-7 (General Maintenance) .............................0-43
Engine ID and VIN Derivative Location
(L36 V-6
1.0. Location) ...............................0-8
Engine ID and VIN Derivative Location
(LS1 V-8 I.D. Location) ...............................0-8
Periodic Maintenance Inspection
(Cooling System Maintenance) ..................0-44
Vibration Diagnosis and Correction ...........0-45
Transmission
ID and VIN Derivative Specifications ................................................0-45
Location ...................................................0-10 Propeller Shaft Runout Specifications ...........0-45
)
Transmission Usage .................................... 0-11
Labeling -Anti-Theft .................................... 0-11
Label -Service Parts ID ..............................0-12
RPO Code List ............................................0-12
Labels -How to Obtain Replacement ...........0-14
Fasteners ....................................................0-14
Thread Inserts .............................................0-17
Propeller Shaft Balancing Weight Amounts .....0-45
Diagnostic Information and Procedures .......0-45
Vibration Diagnosis ......................................0-45
Road Test ...................................................0-47
Classifying the Vibration ...............................0-49
Tire and Wheel Vibration .............................0-52
Torque Wrenches ........................................0-18
Abbreviations and Their Meanings ...............0-20 Tire and Wheel Runout Measurement ..........0-52
Driveline Vibration Analysis ..........................0-53
Key and Lock Cylinder Coding .....................0-25 Engine Related Vibration ..............................0-58
Lifting and Jacking the Vehicle ....................0-28 Repair Instructions ........................................0-62
Strategy Based Diagnosis ............................
0-31
General Service Precautions ........................0-62
Special Tools and Equipment .......................0-32 Correcting Tire and Wheel Vibration .............0-62
Maintenance and Lubrication .......................0-33 Balancing Tires and Wheels ........................0-66
Specifications ................................................0-33
Drive Belt Tension Specifications .................0-33
Approximate Fluid Capacities .......................0-33
Fluid and Lubricant Recommendations .........0-33
Correcting Non-Uniform Tires .......................0-70
Correcting Driveline Vibration -
RWD and 4WD ........................................0-71
Description and Operation ............................0-87
Tire Inflation Pressure Specifications ............0-34 General Description .....................................0-87
Maintenance Items .......................................0-34 Special Tools and Equipment .......................0-98
)

0-2 Table of Contents General Information
(
BLANK (

General Information General Information 0-3
General Information
Conversion -English/Metric Conversion -English/Metric (cont'd)
) Multiply I
English Divide by Metric Multiply I
English Divide by Metric
Length Temperature
in 25.4
mm
(°F -32)*5/9 =
oc
ft 0.3048
OF
= (9/5 *°C + 32)
m
yd 0.9144 Fuel Performance
mi 1.609
km
235.215/mpg = 100 km/L
Area
645.2 sq mm
sq in 6.45 sq cm
sq ft 0.0929
sq yd 0.8361 sq m
Equivalents -Decimal and Metric
Fraction (in) Decimal (in) Metric (mm)
1/64 0.015625 0.39688
1/32 0.03125 0.79375
3/64 0.046875 1.19062
Volume 1/16 0.0625 1.5875
16,387.0
cu mm 5/64 0.078125 1.98437
cu in 16.387
cu cm 3/32 0.09375 2.38125
0.0164 7/64 0.109375 2.77812
qt 0.9464 L 1/8 0.125 3.175
gal 3.7854 9/64 0.140625 3.57187
cu yd 0.764
cum
5/32 0.15625 3.96875
Mass 11/64 0.171875 4.36562
lb 0.4536
907.18
kg
ton
3/16 0.1875 4.7625
13/64 0.203125 5.15937
0.907 tonne
(t)
7/32 0.21875 5.55625
Force 15/64 0.234375 5.95312
kg F 9.807 1/4 0.25 6.35
oz F 0.2780 newtons (N) 17/64 0.265625 6.74687
lb F 4.448 9/32 0.28125 7.14375
Acceleration 19/64 0.296875 7.54062
ft/s2 0.3048 m/s2
in/s2 0.0254
5/16 0.3125 7.9375
21/64 0.328125 8.33437
Torque 11/32 0.34375 8.73125
lb in 0.11296 23/64 0.359375 9.12812
N·m
lb ft 1.3558 3/8 0.375 9.525
Power 25/64 0.390625 9.92187
hp 0.745 kW 13/32 0.40625 10.31875
Pressure (Stress) 27/64 0.421875 10.71562
inches
of H20 0.2488 kPa
lb/sq in 6.895
Energy (Work)
7/16 0.4375 11.1125
29/64 0.453125 11.50937
15/32 0.46875 11.90625
31/64 0.484375 12.30312
Btu 1055.0 1/2 0.5 12.7
lb ft 1.3558 J (J= one Ws) 33/64 0.515625 13.09687
kW hour 3,600,000.0 17/32 0.53125 13.49375
Light
Foot Candle 10.764 lm/m2
) 35/64 0.546875 13.89062
9/16 0.5625 14.2875
Velocity 37/64 0.578125 14.68437
mph 1.6093 km/h 19/32 0.59375 15.08125

0-4 General Information
Equivalents -Decimal and Metric (cont'd)
Fraction (in) Decimal (in) Metric (mm)
39/64 0.609375 15.47812
5/8 0.625 15.875
41/64 0.640625 16.27187
21/32 0.65625 16.66875
43/64 0.671875 17.06562
11/16 0.6875 17.4625
45/64 0.703125 17.85937
23/32 0.71875 18.25625
47/64 0.734375 18.65312
3/4 0.75 19.05
49/64 0.765625 19.44687
25/32 0.78125 19.84375
51/64 0.796875 20.24062
13/16 0.8125 20.6375
53/64 0.828125 21.03437
27/32 0.84375 21.43125
55/64 0.859375 21.82812
7/8 0.875 22.225
57/64 0.890625 22.62187
29/32 0.90625 23.01875
59/64 0.921875 23.41562
15/16 0.9375 23.8125
61/64 0.953125 24.20937
31/32 0.96875 24.60625
63/64 0.984375 25.00312
1 1.0 25.4
General Information
Arrows and Symbols
This service manual uses various symbols in order to
describe different service operations.
1
;.o 3~
~(1~~
~~<?~
4
h 5 6
>.
~
7 8 9
"'r
\6+
10
11
_\..._
r+
Legend
(1) Front of Vehicle
(2) View Detail
\+
12
4
(3) Ambient Air Mixed With Another Gas or
Indicate Temperature Change
(4) Motion or Direction
(5) View Angle
(6) Dimension (1 :2)
(7) Ambient/Clean Air Flow or Cool Air Flow
(8) Lubrication Point-Oil or Fluid
(9) Task Related
(
10) Sectioning (1 :3)
196216
(11) Gas Other Than Ambient Air or Hot Air Flow
(12) Lubrication Point-Grease or Jelly
(
(

\)
General Information
Special Tools Ordering Information
The special service tools shown in this service manual
that have product numbers beginning with J or
BT
are available for worldwide distribution from:
OE
Tool and Equipment Group
Kent-Moore
28635 Mound Road
Warren, Ml, U.S.A. 48092-3499
Phone: [phone]or810-574-2332
Monday through Friday
8:00 a.m.-7:00 p.m. Eastern Standard Time
Fax:
1-800-578-7375 or 810-578-7321
The
TECH 2® scan tool and accessories can be
purchased through:
Dealer Equipment and Services
5775 Enterprise
Dr.
Warren, Ml, U.S.A. 48092-3463
Phone: 1-800-GM-TOOLS or 810-574-2332
Monday through Friday
8:00 a.m.-6:00 p.m. EST
Fax: [phone]
Diagnostic Work Sheets
The GM Diagnostic Worksheet has been designed to
improve communications between the service
customer and the technician. The diagnostic worksheet
can provide the technician with more information
than
the conventional repair order, since it is filled out
by the service customer. The GM Diagnostic
Worksheets are available to you at
no cost. GM
Service Bulletin 58-01-01 has information on how to
order this diagnostic worksheet.
General Information 0-5
Vehicle Identification
1
65474
Legend
(1) Vehicle Identification Number Plate Location
The vehicle identification number (VIN) plate
is the
legal identifier of the vehicle. The VIN plate
is located
on the upper LH corner of the instrument panel
(1/P) and can be seen through the windshield from the
outside of the vehicle.
The last five digits of the assembly plant sequential
number are stamped onto the rear side of the front sill
(tie bar). This number
is the same as the last five
digits
on the VIN plate. The VIN plate also has
bar code characteristics.
Vehicle Identification Number (VIN) System
Position Definition
Character Description
1 Country of Origin 1 United States
2 Manufacturer G General Motors
3 Division 1 Chevrolet
4-5 Carline/Series VY Corvette
6 Body Type 2 Two Door Hatchback/Liftback (GM Style 07)
3 Two Door Convertible (GM Style 67)
7 Restraint System 2 Active (Manual) Belts with Driver and Passenger
Inflatable Restraint System
8 Engine G RPO LS1, V8, 5.7L, SFI, United States Production,
Mid/Lux Division
9 Check Digit - -
10 Model Year w 1998
11 Assembly Plant 5 Bowling Green
12-17 Plant Sequence Number - -

0-6 General Information
VIN Derivative
All engines and transmissions are stamped or laser
etched with a partial vehicle identification number
(VIN), which was derived from the complete VIN. A
VIN derivative contains the following nine positions:
Position Definition Character
1 GM Division Identifier
--
2 Model Year
3 Assembly Plant
4-9 Plant Sequence Number
A VIN derivative can be used to determine if a vehicle
contains the original engine or transmission, by
matching the VIN derivative positions to their
accompanying positions
in the complete VIN:
Label -Vehicle Certification
8
THIS VEHICLE CONFORMS TO ALL APPLICABLE U.S.
FEDERAL MOTOR VEHICLE SAFETY, BUMPER AND
THEFT PREVENTION STANDARDS
IN EFFECT ON
THE DATE OF MANUFACTURE SHOWN ABOVE.
\ 6
7
The vehicle certification label displays the following
assessments:
• The Gross Vehicle Weight Rating (GVWR)
• The Gross Axle Weight Rating (GAWR)
5
1
2
w
2
-
General Information
Description
Chevrolet
Pontiac
1998
St. Therese -
VIN Derivative Position Equivalent
VIN Position
1 3
2 10
3 11
4-9 12-17
MFO. BY GENERAL MOTORS CORP.
GVWR GAWR FAT GAWR RR
PNBV PNBE AV PNBE AR
II
THIS VEHICLE CONFORMS TO ALL
APPLICABLE CANADA MOTOR
VEHICLE SAFETY, BUMPER AND
THEFT PREVENTION STANDARDS
IN EFFECT
ON THE DATE OF
MANUFACTURE SHOWN ABOVE.
• The vehicle's payload rating
4
• The original equipment tire sizes and the
recommended tire pressures
65484
(
(

)
General Information
Gross vehicle weight (GVW) is the weight of the
vehicle and everything it carries. Include the following
items when figuring the GVW:
•
The base vehicle weight (factory weight)
•
The weight of all vehicle accessories, like the
winches or the plows
•
The weight of the driver and the passengers
•
The weight of the cargo
The gross vehicle weight must not exceed the Gross
Vehicle Weight Rating.
The front gross axle weight (GAW)
is the weight
exerted on the front axle. The rear gross axle weight
(GAW) is the weight exerted on the rear axle. The
front
and rear gross axle weights must not exceed the
front
and rear gross axle weight ratings.
The payload rating defines the vehicle's maximum
allowable cargo load. The cargo load includes
the driver and the passengers. The payload rating is
based
on the vehicle's factory installed equipment.
Deduct from the payload rating the weight of
accessories added to the vehicle after the final date of
manufacture.
The vehicle may have a Gross Combination Weight
Rating (GCWR). The Gross Combination Weight
Rating refers to the total maximum weight of
the loaded tow vehicle (including driver and
passengers) and a loaded trailer.
The vehicle's tires must be the proper size and
properly inflatedfor the load the vehicle is carrying.
For more information on tires, refer to Tire Inflation
Pressure Specifications
General Information 0-7
Tire Placard
1
7 5
Legend
(1) Specified Occupant Seating Positions
(2) Total Occupant Seating
(3) Maximum Vehicle Capacity Weight
(4) Tire Pressures, Front, Rear, and Spare
65541
(5) Tire Speed Rating, Front, Rear, and Spare
(6) Tire Label Code
(7) Engineering Model Minus First Character
(8) Tire Sizes, Front, Rear, and Spare
(9) Vehicle Identification Number
The Tire Placard is permanently located on the edge
of the driver's door. Refer to the placard
in order
to obtain the following information:
• The maximum vehicle capacity weight
• The cold tire inflation pressures
• The tire sizes (original equipment tires)
• The tire speed ratings (original equipment tires)

0-8 General Information
Engine ID and
VIN Derivative Location
(L36 V-6 I.D. Location)
The eighth character in the Vehicle Identification
Number (VIN) identifies the engine. Adhesive-backed
labels attached to the engine, laser etching
or
stampings on the engine block indicate the engine unit
number/date code. All engines are stamped with a
VIN derivative. For added information on VIN
derivative, refer to VIN Derivative
182087
The primary location of the VIN derivative for the
3800 engine is above the starter motor on the engine
block
(1 ).
182099
The secondary location of the VIN derivative for the
3800 engine is below the water pump on the
engine block
(1 ).
General Information
Engine
ID and VIN Derivative Location
(LS1 V-8 I.D. Location)
Engine ID Number Locations
Legend
(1) Engine ID Number, Primary Location
(2) Engine ID Number, Secondary Location
The eighth digit of the vehicle identification number
(VIN)
is the engine code letter, which identifies
the engine as a 5.7L V8 (VIN eighth digit: G)
(RPO code
LS1 ).
63234
Stick-on labels attached to the engine, laser etching,
or stampings in the engine block indicate the
engine unit number/build date code.
The engine ID number will be located in either the
primary
or the secondary location, as shown.
(
(