2004 CHEVROLET CLASSIC service indicator

When It Is Time for New Tires
One way to tell when it’s
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire if any of the following statements
are true:
•You can see the indicators at three or more places
around the tire.
•You can see cord or fabric showing through the
tire’s rubber.
•The tread or sidewall is cracked, cut or snagged
deep enough to show cord or fabric.
•The tire has a bump, bulge or split.
•The tire has a puncture, cut or other damage that
can’t be repaired well because of the size or
location of the damage.
Buying New Tires
To find out what kind and size of tires you need, look at
the tire and loading information label. For an example
of this label and its location, seeLoading Your Vehicle
on page 4-32.
The tires installed on your vehicle when it was new had
a Tire Performance Criteria Specification (TPC Spec)
number on each tire’s sidewall. When you get new tires,
get ones with that same TPC Spec number. That way
your vehicle will continue to have tires that are designed
to give proper endurance, handling, speed rating,
load range, traction, ride and other things during normal
service on your vehicle. If your tires have an all-season
tread design, the TPC number will be followed by
an “MS” (for mud and snow).
If you ever replace your tires with those not having a
TPC Spec number, make sure they are the same size,
load range, speed rating and construction type (bias,
bias-belted or radial) as your original tires.
5-62

Inspection
Brake System.............................................6-21
Engine Cooling System................................6-21
Exhaust System..........................................6-20
Fuel System...............................................6-20
Part C - Periodic Maintenance.......................6-20
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-20
Throttle System...........................................6-21
Instrument Panel
Cluster.......................................................3-23
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-15
Instrument Panel Fuse Block
(Passenger’s Side).......................................5-92
Instrument Panel Fuse Block
(Driver’s Side).............................................5-91
Interior Lamps................................................3-15
J
Jump Starting.................................................5-39
K
Key Lock Cylinders Service..............................6-17
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-13
Interior.......................................................3-15
Lap Belt........................................................1-28
Lap-Shoulder Belt...................................1-14, 1-24
LATCH System
Child Restraints...........................................1-45
Securing a Child Restraint Designed for the
LATCH System........................................1-48
Leaving Your Vehicle.......................................2-11
Leaving Your Vehicle With the Engine
Running.....................................................2-25
Light
Air Bag Readiness.......................................3-26
Anti-Lock Brake System Warning...................3-28
Brake System Warning.................................3-27
Charging System.........................................3-27
Door Ajar...................................................3-34
Low Coolant Warning...................................3-29
Low Washer Fluid Warning...........................3-34
Malfunction Indicator....................................3-30
Oil Pressure...............................................3-33
Passlock
®Warning.......................................3-34
Safety Belt Reminder...................................3-25
Service Vehicle Soon...................................3-35
Loading Your Vehicle.......................................4-32
Lockout Protection..........................................2-11
7

Locks
Delayed Locking........................................... 2-8
Door........................................................... 2-7
Leaving Your Vehicle....................................2-11
Lockout Protection.......................................2-11
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-10
Long Trip/Highway Definition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-12
Loss of Control...............................................4-13
Low Coolant Warning Light..............................3-29
Low Washer Fluid Warning Light.......................3-34
M
Maintenance, Normal Replacement Parts............5-96
Maintenance Schedule
At Each Fuel Fill.........................................6-16
At Least Once a Month................................6-16
At Least Once a Year..................................6-17
At Least Twice a Year..................................6-17
Brake System Inspection..............................6-21
Engine Cooling System Inspection.................6-21
Exhaust System Inspection...........................6-20
Fuel System Inspection................................6-20Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.......6-12
Maintenance Requirements............................. 6-2
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
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-20
Throttle System Inspection............................6-21
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-44
Making Turns.................................................4-42
Malfunction Indicator Light................................3-30
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-5
Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico
and U.S. Virgin Islands) – Customer
Assistance................................................... 7-5
8

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