2002 CHEVROLET C3500 HD spark plugs

6-4 California Fuel
If your vehicle is certified to meet California Emission
Standards (see the underhood emission control label),
it is designed to operate on fuels that meet California
specifications. If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp may
turn on (see ªMalfunction Indicator Lampº in the
Index) and your vehicle may fail a smog
-check test.
If this occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is caused
by the type of fuel used, repairs may not be covered by
your warranty.
Additives
Some gasolines that are not reformulated for low
emissions may contain an octane
-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors
does not recommend the use of such gasolines.Fuels containing MMT can reduce the life of spark
plugs and the performance of the emission control
system may be affected. The malfunction indicator lamp
may turn on. If this occurs, return to your authorized
GM dealer for service.
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work properly.
You should not have to add anything to your fuel.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available
in your area to contribute to clean air. General Motors
recommends that you use these gasolines, particularly
if they comply with the specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that contains
methanol. Don't use fuel containing methanol. It can
corrode metal parts in your fuel system and also
damage plastic and rubber parts. That damage
wouldn't be covered under your warranty.

6-68
Normal Maintenance
Replacement Parts
Replacement part numbers listed in this section are
based on the latest information available at the time of
printing, and are subject to change. If a part listed in
this manual is not the same as the part used in your
vehicle when it was built, or if you have any questions,
please contact your GM truck dealer.
These specifications are for information only. If you
have any questions, see the service manual for the
chassis or refer to the body manufacturer's publications.VIN Code G. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Filter* PF454. . . . . . . . . . . . . . . . . . . . . . . .
Engine Air Cleaner Filter* A1300C . . . . . . . .
Spark Plugs*** TJ14R-P15 . . . . . . . . . . . . . . .
Fuel Filter* GF626. . . . . . . . . . . . . . . . . . . . . . .
Wiper Blades** 22154886. . . . . . . . . . . . . . . . .
Wiper Blade Type Trico. . . . . . . . . . . . . . . . . .
Wiper Blade Length 18 inches (45.0 cm). . . . . .
*ACDelco

part number
**GM part number
***Denso part number
A1301C high
-capacity air cleaner filter.

Short Trip/City Scheduled Maintenance
7-29
100,000 Miles (166 000 km)

Gasoline Engine Only: Inspect spark plug wires.
An Emission Control Service.

Gasoline Engine Only: Replace spark plugs.
An Emission Control Service.

Change automatic transmission fluid and filter. Manual transmission fluid
doesn't require change.
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
cooling system and pressure cap.
An Emission Control Service.
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE

Long Trip/Highway Scheduled Maintenance
7-43
100,000 Miles (166 000 km)

Gasoline Engine Only: Inspect spark plug wires.
An Emission Control Service.

Gasoline Engine Only: Replace spark plugs.
An Emission Control Service.

Change automatic transmission fluid and filter. Manual transmission fluid
doesn't require change.
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service.
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE