fuel cap CHEVROLET SUBURBAN 1994 Owners Manual

Listed are four situations you may experience with your fuel gage:
0 At the gas station, the fuel pump shuts off before the gage reads full.
0 It takes a little more or less fuel to fill up than the fuel gage indicated.
For example, the gage may have indicated the tank was half full, but it
actually took a little more or less than half the tank’s capacity to fill the
tank.
0 The gage moves a little when you turn a corner or speed up.
0 The gage doesn’t go back to empty when you turn off the ignition.
None of these indicate a problem
with the fuel gage.
For information
on how to fill your fuel tank, see “Fuel - Filling Your
Tank”
in the Index.
For your fuel tank capacity, see “Fuel -Tank Capacity”
in the Index.
This gage shows the engine coolant temperature. If the gage pointer moves
into the red area, about
260°F (145°C) or more, your engine is too hot! It
means that your engine coolant has overheated.
If you have been operating
your vehicle under normal operating conditions, you should pull
off the
road, stop your vehicle, and turn off the engine as soon as possible.
Hot Coolant Can Burn You Badly!‘
In “Problems on the Road,” this manual shows what to do. See “Engine
Overheating” in the Index.
2-75
ProCarManuals.com

To drain water:
1. Stop and park the vehicle in a safe place. Turn off the engine and apply
2. Remove the fuel tank cap.
the parking brake.
3. Place a
fuel-resistant container under the filter
drain hose.
4. With the engine
off, open the
water drain valve
2 to 3 turns.
When standing in
front of the
vehicle,
the valve
is located
on the
right side
of the
thermostat housing.
5. Start the engine and allow it to idle until clear fuel is observed.
6. Stop the engine and close the water drain valve.
7. Remove the fuel-resistant container and properly dispose of the
contaminated fuel. To find out how
to properly dispose of contaminated
diesel
fuel see “What to Do with Used Oil” in the “Engine Oil (Diesel
Engines)” part, later in
this section.
8. Install the fuel tank cap.
If the
WATER IN FUEL light comes on again after driving a short distance
or the engine
runs rough or stalls-a large amount of water has probably
been pumped into the fuel tank. The fuel tank should be purged.
6-8
ProCarManuals.com

3. Close the air bleed valve.
4. Turn the ignition key to “Start” for 10 to 15 seconas at a time until your
engine starts.
Fuel Filter Replacement (Diesel Engines)
If you want to change the fuel filter yourself, here’s how to do it:
Drain fuel from the filter by opening the air bleed valve and the water drain
valve. This prevents the
fuel from spilling as you replace the filter. Drain the
fuel into a fuel-resistant container and dispose
of it properly.
1. Turn off the engine and apply the parking brake.
2. Take off the fuel tank cap. This releases vacuum in the tank.
3. The filter is located at the rear of the intake manifold.
4;: .
4. Unscrew and
remove the ring
nut from the top
of the filter head.
6- 10
ProCarManuals.com

8.
9.
10.
5. Lift the element out of the filter
head.
6. If there is any dirt
on the element
sealing surface of
the filter head,
clean it off.
7. Line up the
writing
on the top
of the filter
so it
faces (is readable
from) the front of
the vehicle.
Push
the element in
until the mating
surfaces touch.
With the air bleed valve open, turn your ignition key to
RUN for 10 to
15 seconds. Wait one minute for your starter to cool.
Do this until you
can see clear fuel coming from the air bleed valve.
Close the air bleed valve and replace the fuel cap.
Start your engine and let it idle for five minutes. Check your fuel filter
and air bleed valve for leaks.
6-11
ProCarManuals.com

Fuels in Foreign Countries
If you plan on driving in another country outside the U.S. or Canada,
unleaded fuel may be hard to find.
Do not use leaded gasoline. If you use
even one tankful, your emission controls won’t work well or at all. With
continuous use, spark plugs can get fouled, the exhaust system can corrode,
and your engine oil can deteriorate
quickly. Your vehicle’s oxygen sensor
will be damaged. All of that means costly repairs that wouldn’t be covered
by your warranty.
To check on fuel availability, ask an auto club, or contact a major oil
company that does business
in the country where you’ll be driving.
You
can also write us at the following address for advice. Just tell us where
you’re going and give
your Vehicle Identification Number (VIN).
General Motors Overseas Distribution Corporation,
North American Export Sales
(NAES)
1908 Colonel Sam Drive
Oshawa, Ontario
LlH 8P7
Filling Your Tank
The fuel cap is behind
a hinged door on the
left side of your
vehicle.
6-12
ProCarManuals.com

While refueling, hang
the cap inside the fuel
door.
To take off the cap,
turn it slowly to the
left.
,
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.
When you put the cap back on, turn it to the right until you hear
a clicking
noise.
I 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.
6-13
ProCarManuals.com

Engine Oil (Except Diesel)
It's a good idea to check your engine oil every time you get fuel. In order to
get an accurate reading, the oil must be warm and the vehicle must be on
level ground.
Turn
off the engine
and give the oil a few
minutes to drain
back r"' ' '
1 into the oil pan. If you
don't, the oil dipstick
might not show the
actual level.
To Check Engine Oil
I
Pull out the dipstick and clean it with a paper towel or cloth, then push it
back in all the way. Remove it again, keeping the tip lower.
When to Add Oil
If the oil is at or below the ADD mark, then you'll need to add some oil. But
you must use the right kind. This section explains what kind of oil to use.
For crankcase capacity,
see "Capacities and Specifications" in the Index.
6-16
ProCarManuals.com

Malfunction Indicator
(SERVICE ENGINE SOON) Lamp
The Malfunction Indicator (SERVICE ENGINE SOON) Lamp on your
instrument panel lets you know when your emission system needs service.
The light
will come on briefly when you start your engine to let you know
that the system is working.
If it does not come on when you start your
engine,
or if it comes on and stays on while you're driving, your system
may need service. Your vehicle should still be driveable, but
you should
have your system serviced right away.
Secondary Air Injection Reaction (AIR) System
You may have this system. It has a control valve that will direct air to where
it is needed. If the AIR system needs service, your Malfunction Indicator
(SERVICE ENGINE SOON) Lamp on your instrument panel will come
on.
Loading Your Vehicle
MFD BY GENERAL MOT0 RSCORP
i IN EFFECT -
I
- MODEL [ISPEED w
u TIRE SIZE RTG FilM PSllKPA (COLD)
q----p nri
SEE OWNERS MANUAL FOR ADDITIONAL INFORMATION
The CertificatiodTire
label is found
on the
rear edge
of the
driver's door.
The label shows the size
of your original tires and the inflation pressures
needed to obtain the gross weight capacity
of your vehicle. This is called the.
GVWR (Gross Vehicle Weight Rating). The GVWR includes the weight
of
the vehicle, all occupants, fuel and cargo.
The Certificatioflire label also tells you the maximum weights for the
front and rear axles, called Gross Axle Weight Rating (GAWR).
To find out
the actual loads on your front and rear axles,
you need to go to a weigh
station and weigh your vehicle. Your dealer can help you with this.
Be sure
to spread out your load equally on both sides of the centerline.
6-59
ProCarManuals.com

You can operate some vehicles at reduced inflation pressures only when
you’ll be carrying reduced loads. On those vehicles, the minimum cold
inflation pressures for a typical reduced load are printed on the “Improved
Ride Tire Pressure” label located on the driver’s door. Weigh the vehicle to
find the load on each tire and see the label for the minimum cold inflation
pressures for that load.
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:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
If your tires have too much air (overinflation), you can get:
0 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. Simply looking
at the tires will not tell you the pressure, especially
if you have radial tires
- which may look properly inflated even if they’re underinflated.
If your tires have valve caps, be sure to put them back on. They help prevent
leaks by keeping out dirt and moisture.
ProCarManuals.com

Cooling System Capacity
ENGINE VIN
5.7L K
6.5L S
6.5L F
7.4L N
QTY Without AfC* QTY With A/C*
17.5 Quarts (1 6.5 Liters)
18 Quarts ( I7 Liters)
25 Quarts
(23.5 Liters) 25 Quarts (23.5 Liters)
26.5 Quarts (25 Liters)
26.5 Quarts (25 Liters)
23 Quarts (22 Liters)
25 Quarts (23.5 Liters)
After refill, the level MUST be checked as outlined under “Engine Cooling
System”
in Section 5.
*All quantities are approximate.
Crankcase Capacity
ENGINE
5.7L
6.5L
6.5L
7.4L
VIN
K
ST
F?
N
QTY Without Filter“
4 Quarts (3.8 Liters)
6 Quarts (5.7 Liters)
QTY With Filter:$
5 Quarts (4.8 Liters)
7 Quarts (6.5 Liters)
7 Quarts
(6.5 Liters)
7 Quarts (6.5 Liters)
After refill, the level MUST be checked
as outlined under “Engine Oil And
Filter Recommendations”
in Section 5.
*All quantities are approximate.
?Oil filter should be changed at
EVERY oil change.
Fuel Tank Capacity
TYPE
Gasoline/Diesel
Utility Model -Standard
Wagon Model-S tandard
QUANTITY
30 Gallons (I 13 Liters)
42 Gallons (I 59 Liters)
All quantities are for a completely dry tank and are approximate.
6-82
ProCarManuals.com