1999 CHEVROLET SILVERADO fuel type

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6-4
If you're using fuel rated at 87 octane or higher and you
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 emission control
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 and/or your
vehicle may fail a smog
-check test. (See ªMalfunction
Indicator Lampº in the Index.) 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.Some gasolines that are not reformulated for low
emissions may contain an octane
-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask your service station operator whether or not
the fuel contains MMT. General Motors does not
recommend the use of such gasolines. If fuels containing
MMT are used, spark plug life may be reduced and your
emission control system performance may be affected.
The malfunction indicator lamp on your instrument
panel 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 deposits from forming in your engine and fuel
system, allowing your emission control system to
function properly. Therefore, you should not have to add
anything to the fuel. In addition, 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.

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6-7
To remove the cap, turn it slowly to the left
(counterclockwise).
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 ªhissº noise to stop. Then unscrew
the cap all the way.
Be careful not to spill gasoline. Clean gasoline from
painted surfaces as soon as possible. See ªCleaning the
Outside of Your Vehicleº in the Index.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. The diagnostic system can
determine if the fuel cap has been left off or improperly
installed. This would allow fuel to evaporate into the
atmosphere. See ªMalfunction Indicator Lampº in
the Index.
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 properly. This may
cause your malfunction indicator lamp to light
and your fuel tank and emissions system may be
damaged. See ªMalfunction Indicator Lampº in
the Index.

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6-46 Inflation -- Tire Pressure
The Certification/Tire label, which is on the rear edge of
the driver's door, shows the correct inflation pressures
for your tires when they're cold. ªColdº means your
vehicle has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:

Too much flexing

Too much heat

Tire overloading

Bad wear

Bad handling

Bad fuel economy.
NOTICE: (Continued)
NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:

Unusual wear

Bad handling

Rough ride

Needless damage from road hazards.
When to Check
Check your tires once a month or more. Also, check the
tire pressure of the spare tire.
How to Check
Use a good quality pocket
-type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.

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6-76 Crankcase Capacity (Approximate)
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 with Filter

VORTEC
4300 V6W 4.5 quarts (4.3 L)
VORTEC
4800 V8V 6.0 quarts (5.7 L)
VORTEC
5300 V8T 6.0 quarts (5.7 L)
VORTEC
6000 V8U 6.0 quarts (5.7 L)

Oil filter should be changed at every oil change.
Fuel Tank Capacity (Approximate)
Type Quantity
Short Bed 26 gallons (98 L)
Long Bed 34 gallons (128 L)
Chassis Cab 34 gallons (128 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 dealer.
See refrigerant charge label under the hood for charge
capacity information and requirements.

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6-77
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 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 W V T U
Oil Filter* PF52 PF59 PF59 PF59
Engine Air
Cleaner/Filter*A1519C
A1519C
A1519C
A1518C
Passenger Compartment
Air Filter Kit**52485513 52485513 52485513 52485513
PCV Valve* CV769C CV948C CV948C CV948C
Spark Plugs*
41
-932 41-952 41-952 41-952
Fuel Filter* GF626 GF626 GF626 GF626
Wiper Blades** 15706394 15706394 15706394 15706394
Wiper Blade Type ITTA ITTA ITTA ITTA
Wiper Blade Length 22 inches (56.0 cm) 22 inches (56.0 cm) 22 inches (56.0 cm) 22 inches (56.0 cm)
*AC part number
**GM part number

A1518C high
-capacity air cleaner filter may be substituted.

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9-7
Maintenance, Normal Replacement Parts 6-77 . . . . . . . . . . .
Maintenance Record 7-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-18 . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-23 . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-25 . . . . . . . . . . . . .
Scheduled Maintenance Services 7-4 . . . . . . . . . . . . . . . . . .
Maintenance Services 7-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance, Underbody 6-61 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Trailer Towing 4-64 . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp 2-77 . . . . . . . . . . . . . . . . . . . . . .
Manual Front Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Mirror 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Selectable Ride 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission
Check 7
-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-22, 7-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-24, 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Windows 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Seat 1-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Message Center 2-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Messages
Battery 2
-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cargo Lamp On 2-87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change Engine Oil 2-86 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Coolant Temp 2-84 . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Eng Oil Level 2-85 . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Eng Oil Pressure 2-85 . . . . . . . . . . . . . . . . . . . . . . . .
Engine Overheated 2-85 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Coolant 2-84 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Washer Fluid 2
-87 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reduced Engine Power 2-85 . . . . . . . . . . . . . . . . . . . . . . . .
Security 2-86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 4WD 2-86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trans Fluid Hot 2-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Methanol 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirrors 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Camper Type 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night Rearview 2-56 . . . . . . . . . . . . . .
Heated Outside Rearview 2-59, 3-6 . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview 2-56 . . . . . . . . . . . . . . . . . . . . .
Manual 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2-59 . . . . . . . . . . . . . . . . . . . . . . . . .
MMT 6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model Reference vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mountain Roads 4
-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
New Vehicle Break-In 2-13 . . . . . . . . . . . . . . . . . . . . . . . . . .
Night Vision 4-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Maintenance, Normal Replacement Parts 6-77 . . . . . .
Odometer 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer, Trip 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Driving 4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Recovery 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil, Engine 6-12, 7-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Filter 6-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Life Monitor 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OnStar
System 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opener, Garage Door 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . .