check oil CHEVROLET CLASSIC 2004 User Guide

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.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended fluids 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.
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
fluid levels or the wrong tire inflation 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.
6-2

Long Trip/Highway Denition
Follow this scheduled maintenanceonlyif none of the
conditions from the Short Trip/City Scheduled
Maintenance are true. Do not use this schedule if the
vehicle is used for trailer towing, driven in a dusty area
or used off paved roads. Use the Short Trip/City
schedule for these conditions.
Driving a vehicle with a fully warmed engine under
highway conditions will cause engine oil to break down
slower.
Long Trip/Highway Intervals
Every 7,500 Miles (12 500 km):Engine Oil and Filter
Change (or every 12 months, whichever occurs
first). Tire Rotation.
Every 15,000 Miles (25 000 km):Engine Air Cleaner
Filter Inspection.
Every 30,000 Miles (50 000 km):Engine Air Cleaner
Filter Replacement.Every 50,000 Miles (83 000 km):Automatic Transaxle
Service (severe conditions only).
Every 100,000 Miles (166 000 km):Spark Plug Wire
Inspection. Spark Plug Replacement.
Every 150,000 Miles (240 000 km):Cooling System
Service (or every 60 months, whichever occurs
first). Engine Accessory Drive Belt Inspection.
These intervals only summarize maintenance services.
Be sure to follow the complete scheduled maintenance
on the following pages.Short Trip/City 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.
SeePart B: Owner Checks and Services on page 6-16
andPart C: Periodic MaintenanceInspections on
page 6-20.
6-6

Footnotes
†The 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 emission 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.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-21.
3,000 Miles (5 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
6,000 Miles (10 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 5-60for proper rotation pattern and
additional information.(See footnote +.)
9,000 Miles (15 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
12,000 Miles (20 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 5-60for proper rotation pattern and
additional information.(See footnote +.)
15,000 Miles (25 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Inspect engine air cleaner filter. If necessary, replace
the filter. If vehicle is driven in dusty/dirty conditions,
inspect filter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-17for more
information.An Emission Control Service. (See
footnote †.)
18,000 Miles (30 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 5-60for proper rotation pattern and
additional information.(See footnote +.)
21,000 Miles (35 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
6-7

Long Trip/Highway 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.
SeePart B: Owner Checks and Services on page 6-16
andPart C: Periodic MaintenanceInspections on
page 6-20.
Footnotes
†The 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 emission 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.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-21.
7,500 Miles (12 500 km)
❑Change engine oil and filter (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-60for proper rotation pattern and additional
information.(See footnote +.)
15,000 Miles (25 000 km)
❑Change engine oil and filter (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Inspect engine air cleaner filter. SeeEngine Air
Cleaner/Filter on page 5-17for more information.An
Emission Control Service. (See footnote †.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-60for proper rotation pattern and additional
information.(See footnote +.)
22,500 Miles (37 500 km)
❑Change engine oil and filter (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-60for proper rotation pattern and additional
information.(See footnote +.)
6-12

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals specified to
help ensure the safety, dependability and emission
control performance of your vehicle.
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
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant 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.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-19for 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.
SeeWindshield Washer Fluid on page 5-32for further
details.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are
inflated to the correct pressures. Don’t forget to check
your spare tire. SeeTires on page 5-52for further
details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-36for further details.
6-16

Body Lubrication Service..................................6-17
Brake
Parking......................................................2-23
System Inspection.......................................6-21
System Warning Light..................................3-27
Brake Adjustment............................................5-37
Brake Fluid....................................................5-34
Brake Pedal Travel.........................................5-37
Brake Wear...................................................5-36
Brakes..........................................................5-34
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-16
Bulb Replacement...........................................5-45
Center High-Mounted Stoplamp (CHMSL)........5-47
Front Turn Signal Lamps..............................5-47
Halogen Bulbs............................................5-45
Headlamps.................................................5-45
Replacement Bulbs......................................5-50
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-48
Buying New Tires...........................................5-62
C
California Fuel.................................................. 5-5
Capacities and Specifications............................5-95
Carbon Monoxide...................4-23, 4-38, 2-11, 2-27Care of
Safety Belts................................................5-83
Your Cassette Tape Player............................3-55
Your CD Player...........................................3-56
Your CDs ...................................................3-56
Cassette Tape Messages.................................3-50
Cassette Tape Player Service...........................6-16
CD Adapter Kits.............................................3-51
CD Messages........................................3-42, 3-53
Center Console Storage Area...........................2-31
Center High-Mounted Stoplamp (CHMSL)...........5-47
Center Rear Passenger Position, Safety Belts.....1-27
Chains, Tires..................................................5-66
Charging System Light....................................3-27
Check Engine Light.........................................3-30
Checking Coolant............................................5-21
Checking Engine Oil........................................5-13
Checking Your Restraint Systems......................1-62
Chemical Paint Spotting...................................5-86
Child Restraints
Child Restraint Systems...............................1-39
Infants and Young Children...........................1-35
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-45
Older Children.............................................1-32
Securing a Child Restraint Designed for the
LATCH System........................................1-48
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-50
2

Engine (cont.)
Coolant Temperature Gage...........................3-29
Cooling System Inspection............................6-21
Engine Compartment Overview......................5-12
Exhaust.....................................................2-27
Oil .............................................................5-13
Overheating................................................5-22
Starting......................................................2-18
Engine Compartment Fuse Block......................5-93
Engine Coolant Level Check.............................6-16
Engine Cooling When Trailer Towing..................4-44
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-16
Entry/Exit Lighting...........................................3-15
Event Data Records (EDR)..............................7-10
Express-Down Window....................................2-15
Extender, Safety Belt.......................................1-31
Exterior Lamps...............................................3-13
F
Filter
Engine Air Cleaner......................................5-17
Finding a Station....................................3-38, 3-44
Finding Program Type (PTY) Stations................3-46
Finish Care....................................................5-84Finish Damage...............................................5-85
Fixed Mast Antenna........................................3-56
Flash-to-Pass Feature....................................... 3-8
Flat Tire........................................................5-67
Flat Tire, Changing.........................................5-68
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-31
Windshield Washer......................................5-32
FM ...............................................................3-54
Folding the Seatback........................................ 1-6
Following Distance..........................................4-42
Footnotes................................................6-7, 6-12
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-35
Gasoline Octane........................................... 5-4
Gasoline Specifications.................................. 5-5
System Inspection.......................................6-20
Fuses
Fuses and Circuit Breakers...........................5-90
Windshield Wiper.........................................5-89
5

Mirrors
Manual Rearview Mirror................................2-29
Outside Convex Mirror.................................2-30
Outside Power Mirrors..................................2-30
Outside Remote Control Mirrors.....................2-29
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-16
Normal Maintenance Replacement Parts............5-96
O
Odometer......................................................3-24
Off-Road Recovery..........................................4-11
Oil
Engine.......................................................5-13
Pressure Light.............................................3-33
Older Children, Restraints................................1-32
Online Owner Center........................................ 7-3
Operation......................................................3-18
Operation Tips................................................3-21
Other Warning Devices...................................... 3-5
Outlet Adjustment............................................3-21Outside
Convex Mirror.............................................2-30
Power Mirrors.............................................2-30
Remote Controls Mirrors...............................2-29
Overseas – Customer Assistance........................ 7-5
Owner’s Information........................................7-12
P
Park (P)
Shifting Into................................................2-24
Shifting Out of............................................2-26
Parking
Brake........................................................2-23
Over Things That Burn.................................2-26
Parking Brake and Automatic Transaxle Park (P)
Mechanism Check.......................................6-19
Parking on Hills..............................................4-43
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-16
Part C - Periodic MaintenanceInspections..........6-20
Part D - Recommended Fluids and Lubricants.......6-22
Part E - Maintenance Record...........................6-23
Passing.................................................4-11, 4-42
Passlock
®......................................................2-16
9

Vehicle Data Collection and Event Data
Records.....................................................7-10
Vehicle Identification
Number (VIN).............................................5-88
Service Parts Identification Label...................5-88
Vehicle Storage..............................................5-38
Ventilation Adjustment......................................3-21
Visors...........................................................2-15
W
Warning Lights, Gages and Indicators................3-22
Warnings
Hazard Warning Flashers............................... 3-4
Other Warning Devices.................................. 3-5
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washer Fluid, Low Warning Light......................3-34
Washing Your Vehicle......................................5-83
Weatherstrip Lubrication...................................6-17
Weight of the Trailer........................................4-39
Weight of the Trailer Tongue.............................4-40
What Kind of Engine Oil to Use........................5-14
What to Do with Used Oil................................5-16
What to Use..........................................5-20, 5-32
Wheels
Alignment and Tire Balance..........................5-65
Replacement...............................................5-65When to Add Engine Oil..................................5-14
When to Change Engine Oil.............................5-16
When to Check..............................................5-60
When to Check Power Steering Fluid................5-32
When to Inspect the Engine Air Cleaner/Filter.....5-17
When You Are Ready to Leave After Parking
on a Hill.....................................................4-44
Where to Put the Restraint...............................1-42
Why Safety Belts Work..................................... 1-9
Window Lockout.............................................2-15
Windows.......................................................2-14
Power........................................................2-15
Windshield Washer........................................... 3-9
Fluid..........................................................5-32
Windshield Washer Fluid Level Check................6-16
Windshield Wiper
Blade Replacement......................................5-51
Fuses........................................................5-89
Windshield Wiper Lever..................................... 3-8
Winter Driving................................................4-23
Wiper Blade Check.........................................6-17
Y
Your Vehicle and the Environment....................... 6-2
14