3-26
3. Press and hold the TAPE AUX button for five
seconds. The tape symbol on the display will flash
for two seconds.
4. Insert the scrubbing action cleaning cassette.
5. Eject the cleaning cassette after the manufacturer's
recommended cleaning time.
When the cleaning cassette has been ejected, the broken
tape detection feature is active again.
You may also choose a non
-scrubbing action, wet-type
cleaner which uses a cassette with a fabric belt to clean
the tape head. This type of cleaning cassette will not
eject on its own. A non
-scrubbing action cleaner may
not clean as thoroughly as the scrubbing type cleaner.
The use of a non
-scrubbing action, dry-type cleaning
cassette is not recommended.
After you clean the player, press and hold the EJECT
button for five seconds to reset the CLN indicator. 
The radio will display 
--- to show the indicator 
was reset.
Cassettes are subject to wear and the sound quality 
may degrade over time. Always make sure the cassette
tape is in good condition before you have your tape
player serviced.
Care of Your Compact Discs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust. If the surface of a disc is soiled, dampen a
clean, soft cloth in a mild, neutral detergent solution 
and clean it, wiping from the center to the edge.
Be sure never to touch the signal surface when handling
discs. Pick up discs by grasping the outer edges or the
edge of the hole and the outer edge.
Care of Your Compact Disc Player
The use of CD lens cleaner discs is not advised, due to
the risk of contaminating the lens of the CD optics with
lubricants internal to the CD mechanism.
Fixed Mast Antenna
The fixed mast antenna can withstand most car washes
without being damaged. If the mast should ever become
slightly bent, you can straighten it out by hand. If the
mast is badly bent, as it might be by vandals, you should
replace it.
Check every once in a while to be sure the mast is still
tightened to the cowl. If tightening is required, tighten
by hand, then with a wrench one quarter turn. 
6-67 Capacities
After refill, the level must be rechecked. See ªCooling
Systemº in the Index.
 Engine  VIN Quantity
ªVORTECº 8100 G 28.5 quarts (27.0 L)
Engine Oil with Filter
After refill, the level must be rechecked. Add enough
engine oil so that the fluid is within the proper operating
range. See ªEngine Oilº in the Index.
 Engine VIN Quantity
ªVORTECº 8100 G 6.6 quarts (6.3 L)
Fuel Tank Capacity
Type Quantity
Front Tank 22.0 U.S. gallons (79 L)
Rear Tank 18.0 U.S. gallons (68 L)
Air Conditioning 
Refrigerant Capacity
If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning 
Refrigerant R
-134a 2.0 lbs (0.91kg). . . . . . . . . . . . . 
Use Refrigerant Oil, R134a Systems 
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.