fuel cap CHEVROLET EXPRESS 1997 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries
out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently
as designed since small amounts of
air are sucked
into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure
to install the fuel cap properly. It
will take a few driving trips
to turn the light off.
Have
you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel (see
“Fuel” in the Index). Poor fuel quality will cause your
engine not
to run as efficiently as designed. You may
notice this
as stalling after start-up, stalling when you
put the vehicle into gear, misfiring, hesitation on
acceleration or stumbling on acceleration. (These
conditions may go away once
the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience one or more of these conditions,
change
the fuel brand you use. It will require at least one
full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
have your dealer or qualified service center check the
vehicle. Your dealer has
the proper test equipment and
diagnostic tools to
fix any mechanical or electrical
problems that may have developed.
2-56

Downloaded from www.Manualslib.com manuals search engine Listed are four situations you may experience with your
fuel gage:
0
0
0
0
At the gas station, the fuel pump shuts off before the
gage reads
FULL (F).
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.
The gage moves a little when you turn
a corner or
speed up.
The gage doesn’t
go back to EMPTY (E) when you
turn off the ignition.
None
of these indicate a problem with the fuel gage.
Engine Coolant Temperature Gage
This gage shows the engine
gage pointer moves into
the red area your engine is
coolant
temperature.
If the
’% 260
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.
In “Problems on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.

Downloaded from www.Manualslib.com manuals search engine Run your engine only as long as you must. This
saves fuel. When
you run the engine, make it go a
little faster than just idle. That is, push the accelerator
slightly. This uses less fuel for the heat that
you get
and it keeps the battery (or batteries) charged.
You will
need a well-charged battery (or batteries) to restart the
vehicle, and possibly for signaling later
on with your
headlamps. Let
the heater run for awhile. If you have a
diesel engine you may have to run it at a higher speed
to get enough heat.
Then, shut the engine
off and close the window almost
all the way to preserve the heat. Start the engine again
and repeat this only when you feel really uncomfortable
from the cold. But do it
as little as possible. Preserve the
fuel as long as you can. To help keep warm, you can get
out
of the vehicle and do some fairly vigorous exercises
every half hour or
so until help comes.
Loading Your Vehicle
fii I
in
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
GVWR (Gross Vehicle Weight Rating). The
GVWR
includes the weight of the vehicle, all occupants, fuel
and cargo.

Downloaded from www.Manualslib.com manuals search engine Towing a Trailer
A CAUTION:
If you don’t use the correct equipment and drive
properly, you can lose control when you pull
a
trailer. For example, if the trailer is too heavy, the
brakes
may not work well -- or even at all. You
and your passengers could be seriously injured.
Pull
a trailer only if you have followed all the
steps in this section.
Ask your GM dealer for
advice and information about towing a trailer
with your vehicle.
NOTICE:
Pulling a trailer improperly can damage your
vehicle and result in costly repairs not covered by
your warranty.
To pull a trailer correctly, follow
the advice in this part, and see your
GM dealer
for important information about towing
a trailer
with your vehicle.
Your vehicle can tow a trailer. To identify what the
vehicle trailering capacity is for your vehicle, you
should read the information in “Weight of the Trailer’’
that appears later
in this section. But trailering is
different than just driving your vehicle by itself.
Trailering means changes in handling, durability and
fuel economy. Successful, safe trailering takes correct
equipment, and it has
to be used properly.
That’s the reason for this section.
In it are many
time-tested, important trailering tips and safety rules.
Many
of these are important for your safety and that of
your passengers. So please read this section carefully
before you pull a trailer.

Downloaded from www.Manualslib.com manuals search engine Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There
is also technical information about your
vehicle, and
a part devoted to its appearance care.
6-2
6-3
6-5
6-5
6-7
6-1 1
6-12 6-17
6-18
6-22
6-22
6-25
6-26 6-26
6-27
6-28 6-32 Service
Fuel (Gasoline Engine)
Fuels in Foreign Countries
Filling Your Tank
Checking Things Under the Hood
Noise Control System
Engine Oil (Gasoline Engine)
Air Cleaner (Gasoline Engines)
Automatic Transmission Fluid
Rear Axle
Engine Coolant Radiator Pressure Cap
Thermostat Power Steering Fluid
Windshield Washer Fluid
Brakes
Battery 6-32
6-32
6-40
6-4
1
6-49
6-50
6-54
6-55
6-55
6-55
6-56
6-57
6-5 8
6-59
6-63
6-66
6-67 Bulb Replacement
Halogen Bulbs
Windshield Wiper Blade Replacement
Tires Appearance Care
Cleaning the Inside
of Your Vehicle
Cleaning the Outside of Your Vehicle
Cleaning Aluminum Wheels
(If Equipped)
Cleaning Tires Sheet Metal Damage
Finish Damage
Appearance Care Materials Chart
Vehicle Identification Number (VIN)
Electrical System
Capacities and Specifications
Air Conditioning Refrigerants
Lamp and Bulb Data

Downloaded from www.Manualslib.com manuals search engine A 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.
While refueling, hang the cap inside the fuel door.
To take off the cap, turn it slowly to the left
(counterclockwise). 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.

Downloaded from www.Manualslib.com manuals search engine 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.
Checking Things Under the Hood
To open the hood, first
pull this handle inside the
vehicle.
It is just in front of
the driver’s side door frame
near the floor.

Downloaded from www.Manualslib.com manuals search engine Inflation -- Tire Pressure
The CertificatiodTire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold.
“Cold” means your
vehicle has been sitting for at least three hours or driven
no more than
1 mile (1.6 lun).
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:
0 Too much flexing
Too much heat
Tire overloading
Bad wear
0 Bad handling
Bad fuel economy.
NOTICE: (Continued) NOTICE:
(Continued)
If your tires have too much air (overinflation),
you can get the following:
Unusual wear
0 Bad handling
0 Rough ride
0 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.
6-42

Downloaded from www.Manualslib.com manuals search engine Name
RH-HIBM
ECM-I
HORN LH-HDLP
LH-HIBM
FUEL SOL
IGN-E
ECM-B
Circuits Protected
Right-hand High-beam Headlamp (Export Only)
Ignition Coil, Crankshaft Position
Sensor, VCM, Fuel Injectors,
Coil Driver
Horn Relay, Underhood Lamp(
s)
Left-hand Headlamp
(Export Only)
Left-hand High-beam Headlamp (Export Only)
PCM,
Fuel Solenoid Driver,
Engine Shutoff Solenoid
Air Conditioning Clutch Relay
Fuel Pump Relay, VCM, PCM,
Fuel Pump and Engine Oil
Pressure Switch
Capacities and Specifications
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.

Downloaded from www.Manualslib.com manuals search engine Engine Identification -- Gasoline Engines
Type V6 V8 Engine
“VORTEC”4300 “VORTEC”5000
VIN Code W M
Fuel System CSFI~ CSFI 1
Central Sequential Fuel
Injection
2Sequential Fuel Injection
Wheel Nut Torque
MODEL
All
TORQUE
140 ft-lb (1 90 N-m)
Cooling System Capacity
ENGINE VIN
“VORTEC”4300 W
“VORTEC”5000 M
“VORTEC”5700 R
“VORTEC”7400 J
“VORTEC”5700
V8
R
CSFI 1
“VORTEC”7400
V8
J
SFI*
QTY Without Rear Heater*
1 1 Quarts (10.4 L)
17 Quarts ( 16 L)
17 Quarts ( 16 L)
23 Quarts (21.8 L)
QTY With Rear Heater*
14 Quarts (13.2 L)
20 Quarts (18.9 L)
20 Quarts (18.9 L)
26 Quarts (24.6 L)
After refill, the level MUST be checked as outlined under “Engine Cooling System” in Section 5.
*All quantities are approximate.