Page 279 of 436

Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airflow around it. This may cause wind noise
and affect windshield washer performance. Check with
your GM dealer before adding equipment to
the outside
of your vehicle.
Fuel (Gasoline Engine)
If your vehicle has a diesel engine, see “Diesel Fuel
Requirements and Fuel System”
in the Diesel Engine
Supplement. For vehicles with gasoline engines, please
read this.
Use regular unleaded gasoline rated at
87 octane or
higher. At a minimum, it should meet specifications
ASTM D4814 in the United States and CGSB
3.5-M93
in Canada. Improved gasoline specifications have been
developed by
the American Automobile Manufacturers
Association (AAMA) for better vehicle performance
and engine protection. Gasolines meeting
the AAMA
specification could provide improved driveability and
emission control system protection compared to
other gasolines. Be sure
the posted octane is at least 87. If
the octane is
less than
87, you may get a heavy knocking noise when
you drive. If it’s bad enough, it can damage your engine.
If you’re using fuel rated at
87 octane or higher and you
still hear heavy knocking, your engine needs service.
But don’t worry if you hear a little pinging noise when
you’re accelerating or driving up a
hill. That’s normal,
and
you don’t have to buy a higher octane fuel to get rid
of pinging. It’s the heavy, constant knock that means
you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated
on the underhood tune-up label),
it is designed to operate
on fuels that meet California
specifications. If such fuels are
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
on
your instrument panel may turn on andor your vehicle
may fail a smog-check test. If this occurs, return
to your
authorized GM dealer for diagnosis
to determine the
cause of failure. In the event it is determined that the
cause of
the condition is the type of fuels used, repairs
may not be covered by your warranty.
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Page 283 of 436
/1 CAUTION:
If you get gasoline on yourself and then
something ignites it, you could be badly burned. Gasoline can spray out on you if you open the
fuel filler cap too quickly. This spray can happen
if your tank is nearly full, and
is more likely in
hot weather. Open the fuel filler cap slowly and
wait for
any “hiss” noise to stop. Then unscrew
the cap all the
way.
When you put the cap back on, turn it to the right
(clockwise)
until you hear a clicking sound. Make sure
you fully install the cap.
NOTICE:
If you need a new cap, be sure to get the right
type.
Your dealer can get one for you. If you get
the wrong type, it may not
fit or have proper
venting, and your fuel tank and emissions system
might be damaged.
Be careful not
to spill gasoline. Clean gasoline from
painted surfaces as soon as possible. See “Cleaning the
Outside of Your Vehicle” in the Index.
6-7
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Page 353 of 436

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
Oil Filter*
Air Cleaner Filter*
PCV Valve*
Spark Plugs*
Fuel Filter* Wiper Blades**
Wiper Blade Type
Wiper Blade Length
W
PF52
A
1 300C
CV746C
4 1-932
GF626
22 154886
Trico 18 inches (45.0 cm)
M
PF1218T
A 1300C
CV796C
41 -932 GF626
22154886
Trico
18 inches (45.0 cm)
*AC part number
**GM part number
?Use a PF52 oil filter if your vehicle has four-wheel drive.
R
PF1218T
A 1300C
CV796C
4 1-932
GF626
22154886
Trico 18 inches (45.0 cm)
J
PF1218
A 1300C
cv774c
4 1-932
GF626
22154886
Trico
18 inches (45.0 cm)
6-77
ProCarManuals.com
Page 354 of 436

Fuel Tank Capacity (Approximate)
Type
Short Bed
Long Bed Standard Crew Cab
Chassis-Cab Side Tank
Chassis-Cab Rear Tank 3500
HD Models Side Tank
3500
HD Models Rear Tank
Cooling System Capacity (Approximate)
After refill, the level must be rechecked. See “Cooling
System” in the Index.
Engine
“VORTEC” 4300
“VORTEC”
5000
“VORTEC” 5700
“VORTEC” 7400
“VORTEC”
7400
w/3500 HD
VIN
W
M
R
J
J
Quantity
13 quarts (12.3 L)
17.5 quarts (16.6 L)
17.5 quarts (16.6 L)
25 quarts (23.5 L)
28.5 quarts (27 L)
Crankcase Capacity (Approximate)
After refill, the level must be rechecked. See “Engine
Oil” in the Index.
Engine
“VORTEC” 4300
“VORTEC”
5000
“VORTEC” 5700”
“VORTEC” 7400*
VIN
W
M
R
J
Quantity with Filter?
5 quarts (4.8 L)
5 quarts (4.8 L)
7 quarts (6.5 L)
4.5 quarts (4.3
L)
?Oil
filter should be changed at every oil change.
*Add one additional quart (.946
L) for C-3500 HD Models.
Quantity
26 gallons (98 L)
34 gallons (128 L)
34 gallons (128 L)
22 gallons (83 L)
18 gallons (68 L)
22 gallons (83 L)
18 gallons (68 L)
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the
air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant
is used.
If you’re not sure, ask your GM dealer.
See the refrigerant charge label under the hood for
information regarding refrigerant capacity.
6-78
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