CHEVROLET CORVETTE 2003 5.G Owners Manual

Engine Speci®cations
Engine VIN Code Transmission Spark Plug Gap Firing Order
LS1 V8 G Automatic 0.060 inch
(1.524 mm)1±8±7±2±6±5±4±3
LS1 V8 G Manual 0.060 inch
(1.524 mm)1±8±7±2±6±5±4±3
LS6 V8 S Manual 0.060 inch
(1.524 mm)1±8±7±2±6±5±4±3
Engine Data
Engine Horsepower Torque Displacement Compression Ratio
LS1 Automatic
Transmission350 @ 5200 rpm 360 @ 4000 rpm 5.7 L 10.1:1
LS1 Manual
Transmission350 @ 5200 rpm 375 @ 4400 rpm 5.7 L 10.1:1
LS6 405 @ 6000 rpm 400 @ 4800 rpm 5.7 L 10.5:1
5-93

Normal Maintenance Replacement Parts
Normal Maintenance Replacement Parts
Part Number
Engine Air Cleaner/Filter A917C*
Engine Oil FilterPF44*
PCV ValveCV948C*
Spark Plug41±974*
Windshield Wiper Blade
Length22 inches (55.9 cm)
Type9 mm x 3 mm Shepherd's Hook
* ACDelco
žpart number.
5-94

Engine Accessory Drive Belt Routing
5-95

-NOTES
5-96

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-4
Part B: Owner Checks and Services.................6-8
At Each Fuel Fill............................................6-8
At Least Once a Month...................................6-8
At Least Twice a Year....................................6-9At Least Once a Year.....................................6-9
Part C: Periodic MaintenanceInspections.........6-12
Steering and Suspension Inspection................6-12
Tire and Wheel Inspection.............................6-12
Exhaust System Inspection............................6-12
Fuel System Inspection..................................6-13
Engine Cooling System Inspection...................6-13
Rear Axle Service.........................................6-13
Brake System Inspection................................6-13
Part D: Recommended Fluids and
Lubricants................................................6-14
Part E: Maintenance Record...........................6-16
Section 6 Maintenance Schedule
6-1

Maintenance Schedule
Introduction
Important: Keep engine oil at the proper level and
change as recommended.
Have you purchased the GM Protection Plan? The Plan
supplements your new vehicle warranties. See your
Warranty and Owner Assistance booklet or your dealer
for details.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment. Improper vehicle maintenance can
even affect the quality of the air we breathe. Improper
¯uid levels or the wrong tire in¯ation can increase
the level of emissions from your vehicle. To help protect
our environment, and to keep your vehicle in good
condition, be sure to maintain your vehicle properly.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended ¯uids and lubricants as prescribed in this
manual are necessary to keep your vehicle in good
working condition. Any damage caused by failure
to follow scheduled maintenance may not be covered by
warranty.
6-2

How This Section is Organized
This maintenance schedule is divided into ®ve parts:
ªPart A: Scheduled Maintenance Servicesºexplains
what to have done and how often. Some of these
services can be complex, so unless you are technically
quali®ed and have the necessary equipment, you
should let your GM dealer's service department do
these jobs.
Your GM dealer has GM-trained and supported
service people that will perform the work using genuine
GM parts.
{CAUTION:
Performing maintenance work on a vehicle can
be dangerous. In trying to do some jobs, you
can be seriously injured. Do your own
maintenance work only if you have the
required know-how and the proper tools and
equipment for the job. If you have any doubt,
have a quali®ed technician do the work.
If you want to get the service information, see
Service
Publications Ordering Information on page 7-10.ªPart B: Owner Checks and Servicesºtells you what
should be checked and when. It also explains what
you can easily do to help keep your vehicle in good
condition.
ªPart C: Periodic MaintenanceInspectionsºexplains
important inspections that your dealer's service
department can perform for you.
ªPart D: Recommended Fluids and Lubricantsºlists
some recommended products necessary to help
keep your vehicle properly maintained. These products,
or their equivalents, should be used whether you do
the work yourself or have it done.
ªPart E: Maintenance Recordºis a place for you to
record and keep track of the maintenance performed on
your vehicle. Keep your maintenance receipts. They
may be needed to qualify your vehicle for warranty
repairs.
6-3

Part A: Scheduled Maintenance
Services
This part contains engine oil scheduled maintenance
which explains the engine oil life system and how
it indicates when to change the engine oil and ®lter.
Also, listed are scheduled maintenance services which
are to be performed at the mileage intervals speci®ed.
Using Your Maintenance Schedule
We at General Motors want to keep your vehicle in good
working condition. But we don't know exactly how
you'll drive it. You may drive short distances only a few
times a week. Or you may drive long distances all
the time in very hot, dusty weather. You may use your
vehicle in making deliveries. Or you may drive it to
work, to do errands or in many other ways.
Because of the different ways people use their vehicles,
maintenance needs may vary. You may need more
frequent checks and replacements. So please read the
following and note how you drive. If you have
questions on how to keep your vehicle in good condition,
see your dealer.
This part tells you the maintenance services you should
have done and when to schedule them.When you go to your dealer for your service needs,
you'll know that GM-trained and supported service
people will perform the work using genuine GM parts.
The proper ¯uids and lubricants to use are listed in
Part D. Make sure whoever services your vehicle uses
these. All parts should be replaced and all necessary
repairs done before you or anyone else drives the
vehicle.
This schedule is for vehicles that:
·carry passengers and cargo within recommended
limits. You will ®nd these on your vehicle's
Tire-Loading Information label. See
Loading Your
Vehicle on page 4-33.
·are driven on reasonable road surfaces within legal
driving limits.
·use the recommended fuel. SeeGasoline Octane
on page 5-4
.
Scheduled Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of
this vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of this
vehicle.
6-4

SeePart B: Owner Checks and Services on page 6-8,Part C: Periodic MaintenanceInspections on page 6-12andPart D: Recommended Fluids and Lubricants on
page 6-14.
Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emissions warranty or limit recall liability prior to the
completion of the vehicle's useful life. We, however,
urge that all recommended maintenance services
be performed at the indicated intervals and the
maintenance be recorded.
Engine Oil Scheduled Maintenance
Change engine oil and ®lter as indicated by the
Engine Oil Life System (or every 12 months,
whichever occurs ®rst). Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and ®lter. This is
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A CHANGE OIL SOON message will come
on. Change your oil as soon as possible within the
next two times you stop for fuel. It is possible that, if you
are driving under the best conditions, the oil life
system may not indicate that an oil change is necessary
for over a year. However, your engine oil and ®lter
must be changed at least once a year and at this time
the system must be reset. Your dealer has GM-trained
service people who will perform this work using
genuine GM parts and reset the system.
It is also important to check your oil regularly and keep
it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed. SeeEngine Oil on
page 5-13for information on resetting the system.
Use engine oil meeting the GM Standard GM4718M.
An Emission Control Service.
See the mileage intervals following for additional
services that may be performed with an engine oil
change. After the services are performed, record the
date, odometer reading and who performed the service
on the maintenance record pages in Part E of this
schedule.
6-5

15,000 Miles (25 000 km)
qInspect engine air cleaner ®lter. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect ®lter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-18for more
information.An Emission Control Service. (See
footnote ².)
30,000 Miles (50 000 km)
qReplace engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-18for more information.An Emission Control Service.
45,000 Miles (75 000 km)
qInspect engine air cleaner ®lter. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect ®lter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-18for more
information.An Emission Control Service. (See
footnote ².)
50,000 Miles (83 000 km)
qChange automatic transmission ¯uid and ®lter if the
vehicle is mainly driven under one or more of these
conditions:
þ In heavy city traffic where the outside
temperature regularly reaches 90ÉF (32ÉC) or
higher.
þ In hilly or mountainous terrain.
þ Uses such as high performance operation.
If you do not use your vehicle under any of these
conditions, change the ¯uid and ®lter at
100,000 miles (166 000 km). Manual
transmission ¯uid doesn't require change.
60,000 Miles (100 000 km)
qReplace engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-18for more information.An Emission Control Service.
6-6