2004 CHEVROLET CORVETTE oil change

Scheduled Maintenance
When the CHANGE OIL SOON message comes on, it
means that service is required for your vehicle. Have your
vehicle serviced as soon as possible within the next 600
miles (1 000 km). It is possible that, if you are driving
under the best conditions, the engine oil life system may
not indicate that vehicle service is necessary for over a
year. However, your engine oil and filter must be changed
at least once a year and at this time the system must be
reset. Your GM Goodwrench dealer has GM-trained
service technicians who will perform this work using
genuine GM parts and reset the system.
If the engine oil life system is ever reset accidentally,
you must service your vehicle within 3,000 miles
(5 000 km) since your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil on page 5-13for information on the Engine
Oil Life System and resetting the system.When the CHANGE OIL SOON message appears,
certain services, checks and inspections are required.
Required services are described in the following for
“MaintenanceI” and “MaintenanceII.” Generally,
it is recommended that your first service be
MaintenanceI, your second service be MaintenanceII
and that you alternate MaintenanceIand MaintenanceII
thereafter. However, in some cases, MaintenanceII
may be required more often.
MaintenanceI— Use MaintenanceIif the message
comes on within ten months since vehicle was
purchased or MaintenanceIIwas performed.
MaintenanceII— Use MaintenanceIIif the previous
service performed was MaintenanceI. Always use
MaintenanceIIwhenever the message comes on ten
months or more since the last service or if the message
has not come on at all for one year.
6-4

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and filter. Reset oil life system. SeeEngine Oil on
page 5-13.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (g).••
Inspect engine air cleaner filter. If necessary, replace filter. SeeEngine Air
Cleaner/Filter on page 5-18.An Emission Control Service. See footnote †.••
Check tire inflation pressures and tire wear. SeeTires on page 5-55.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer fluid levels and add fluid as
needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
6-5

(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
-In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
-In hilly or mountainous terrain.
-Uses such as high performance operation.
(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-23for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and filler neck.
Pressure test the cooling system and pressure cap.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specified to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-11.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-13for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-23for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the windshield
washer tank and add the proper fluid if necessary.
6-8

Audio System(s) (cont.)
Understanding Radio Reception.....................3-88
Automatic Transmission...................................2-21
Fluid..........................................................5-20
Operation...................................................2-25
B
Battery..........................................................5-40
Battery Replacement......................................... 2-8
Battery Run-Down Protection............................3-18
Before Leaving on a Long Trip.........................4-25
Brake
Parking......................................................2-31
System Warning Light..................................3-38
Brake Fluid....................................................5-37
Brake Wear...................................................5-39
Brakes..........................................................5-37
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-48
Back-Up Lamps...........................................5-52
Halogen Bulbs............................................5-48
Headlamps.................................................5-48
Replacement Bulbs......................................5-52
Taillamps and Turn Signal Lamps..................5-50
Buying New Tires...........................................5-66
C
California Fuel.................................................. 5-5
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specifications............................5-99
Carbon Fiber Hood.........................................5-89
Carbon Monoxide...................4-28, 4-38, 2-11, 2-36
Care of
Safety Belts................................................5-85
Your Cassette Tape Player............................3-88
Your CD Player...........................................3-89
Your CDs ...................................................3-89
Cargo Cover..................................................2-43
Cassette Tape Messages.................................3-75
Cassette Tape Player Service............................. 6-9
CD Adapter Kits.............................................3-75
CD Changer, Trunk-Mounted............................3-81
CD Messages........................................3-80, 3-85
Center Console Storage Area...........................2-40
Chains, Tires..................................................5-71
Check
Engine Light...............................................3-41
Gages Warning Light...................................3-46
Check Engine Light.........................................3-41
Checking Coolant............................................5-24
Checking Engine Oil........................................5-13
2

Fuses
Fuses and Circuit Breakers...........................5-93
Windshield Wiper.........................................5-92
G
Gage
Check Gages Warning Light..........................3-46
Engine Coolant Temperature.........................3-41
Engine Oil Pressure.....................................3-44
Fuel..........................................................3-46
Speedometer..............................................3-34
Tachometer.................................................3-34
Voltmeter Gage...........................................3-37
Gasoline
Octane........................................................ 5-5
Specifications............................................... 5-5
Glove Box.....................................................2-40
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hatch/Trunk...................................................2-11
Hatch/Trunk Lid Release..................................2-12
Hazard Warning Flashers................................... 3-4Headlamp High/Low-Beam Changer.................... 3-8
Headlamp Wiring............................................5-92
Headlamps....................................................5-48
Bulb Replacement.......................................5-48
Halogen Bulbs............................................5-48
Headlamps Doors...........................................3-14
Headlamps on Reminder................................... 3-8
Head-Up Display (HUD)...................................3-18
Highway Hypnosis...........................................4-26
Hill and Mountain Roads..................................4-26
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Hood, Carbon Fiber........................................5-89
Horn............................................................... 3-5
How to Add Coolant to the Coolant
Surge Tank.................................................5-31
How to Add Fluid............................................5-22
How to Check and Add Fluid............................5-23
How to Check Lubricant...................................5-47
How to Check Power Steering Fluid..................5-35
How to Remove and Replace the Floor Mats......2-41
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-11
Hydraulic Clutch.............................................5-22
Hydroplaning..................................................4-22
6

Mirrors (cont.)
Outside Power Heated Mirrors.......................2-38
Model Reference................................................ vi
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-19
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-34
Off-Road Recovery..........................................4-16
Oil
Engine.......................................................5-13
Engine Oil Pressure Gage............................3-44
Older Children, Restraints................................1-19
One to Four Shift Light (Manual Transmission)....2-30
Online Owner Center........................................ 7-3
Operating the Trunk-Mounted CD Changer
with the Radio with Cassette.........................3-83
Operating the Trunk-Mounted CD Changer
with the Radio with CD................................3-84
Other Warning Devices...................................... 3-5
Outlet Adjustment............................................3-31
Outside
Automatic Dimming Mirror.............................2-39
Convex Mirror.............................................2-39Outside (cont.)
Power Heated Mirrors..................................2-38
Overheated Engine Protection Operating Mode . . . 5-26
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Park (P)
Shifting Into................................................2-32
Shifting Out of............................................2-34
Parking
Brake........................................................2-31
Over Things That Burn.................................2-35
Parking Your Vehicle.......................................2-35
Passenger Position, Safety Belts.......................1-19
Passing.........................................................4-16
PASS-Key
®....................................................2-18
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape..................................3-73
Playing a CD.................................................3-79
Playing the Radio...................................3-70, 3-76
Power
Accessory Outlets........................................3-22
Antenna Mast Care......................................3-90
Door Locks.................................................2-10
Electrical System.........................................5-92
9

Transmission
Fluid, Automatic...........................................5-20
Fluid, Manual..............................................5-21
Transmission Operation, Automatic....................2-25
Transmission Operation, Manual........................2-28
Transportation Options...................................... 7-8
Trunk/Hatch...................................................2-11
Trunk-Mounted CD Changer.............................3-81
Turn and Lane-Change Signals.......................... 3-7
Turn Signal/Multifunction Lever........................... 3-6
Twilight Sentinel
®(Optional in United States,
Standard in Canada)....................................3-16
U
Understanding Radio Reception........................3-88
Uniform Tire Quality Grading............................5-67
United States – Customer Assistance.................. 7-4
Unlocking the Theft-Deterrent Feature After a
Power Loss................................................3-87
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... ivVehicle (cont.)
Loading......................................................4-33
Parking Your...............................................2-35
Symbols......................................................... iv
Vehicle Data Collection and Event Data
Recorders.................................................... 7-9
Vehicle Identification
Number (VIN).............................................5-91
Service Parts Identification Label...................5-92
Vehicle Personalization
Memory.....................................................2-57
Vehicle Storage..............................................5-41
Ventilation Adjustment......................................3-31
Visors...........................................................2-15
Voltmeter Gage..............................................3-37
W
Warning Lights, Gages and Indicators................3-32
Warnings
DIC Warnings and Messages........................3-58
Hazard Warning Flashers............................... 3-4
Other Warning Devices.................................. 3-5
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle......................................5-85
What Kind of Engine Oil to Use........................5-14
13

What to Do with Used Oil................................5-17
Wheels
Alignment and Tire Balance..........................5-68
Replacement...............................................5-68
When to Add Engine Oil..................................5-14
When to Change Engine Oil
(GM Oil Life System)...................................5-16
When to Check Lubricant.................................5-47
When to Check Power Steering Fluid................5-35
Why Safety Belts Work..................................... 1-8
Windows.......................................................2-14
Power........................................................2-15Windshield Washer........................................... 3-9
Fluid..........................................................5-36
Windshield Wiper
Blade Replacement......................................5-52
Fuses........................................................5-92
Windshield Wipers............................................ 3-8
Winter Driving................................................4-28
Y
Your Vehicle and the Environment....................... 6-2
14