trailer CHEVROLET SUBURBAN 1993 Owner's Manual

Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutc\
h is engaged,
the fan spins faster
to provide more air to cool the engine. In most every day
driving conditions the clutch is not engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer towing \
and/or high
outside temperatures, the fan speed increases when the clutch e\
ngages.
So
you may hear an increase in fan noise. This is normal and sh\
ould not be
mistaken
as the transmission slipping or making extra shifts. It is merely the
cooling system functioning properly. The fan
will slow down when additional
cooling is not required and the clutch disengages.
You may also hear this fan noise when you start the engine. \
It will go away
as the fan clutch disengages.
If a Tire Goes Fiat
It’s unusual for a tire to “blow out” while you’re driving,\
especially if you
maintain your tires properly.
If air goes out of a tire, it’s much more likely to
leak out slowly. But if you should ever have a “blowout,” here are a few tips
about what
to expect and what to do:
If a front tire fails, the flat tire will create a drag that pulls the vehicle toward
that side. Take your foot
off the accelerator pedal and grip the steering wheel
firmly. Steer to maintain lane position, then gently brake
to a stop well out of
the traffic lane.
A rear blowout, particularly on a curve, acts much like a skid and may
require the same correction you’d use in a skid. In any rear blowout, remove
your foot from the accelerator pedal. Get the vehicle under co\
ntrol by steering
the way you want the vehicle
to go. It may be very bumpy and noisy, but
you can still steer. Gently brake to a stop, well off the road if possible.
If your tire goes flat, the next part shows how to use your jacking equipment
to change a flat tire safely.
Changing a Flat Tire
If a tire goes flat, avoid further tire and wheel damage by driving slowly to a
level place. Turn
on your hazard warning flashers.
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These numbers on an oil container show its viscosity, or thickness.
Do not use other viscosity oils such as SAE 1OW-40 or SAE 2OW-50.
Energy Conserving II
Oils with these words on the container will help you save fuel.
This doughnut-shaped logo (symbol) is used on most oil contai\
ners to help
you select the correct oil,
You should look for this on the
oil container, and use only those oils that
display the logo.
GM Goodwrench@ oil (in Canada, GM Engine Oil) meets all the requirements
for your vehicle.
Engine Oil Addifives:
Don't add anything to your oil. Your GM dealer is ready to advise if you think
something should be added.
When to Change Engine Oil:
See if any one of these is true for you;
Most trips are less than 4 miles (6 km).
It's below freezing outside and most trips are less than 10 miles (16 km).
The engine is at low speed most of the time (as in door to door
You tow a trailer often.
Most trips are through dusty places.
The vehicle is frequently operated off-road. delivery, or in stop-and-go
traffic),
If any one of these is true for your vehicle, then you need to change your oil
and filter every 3,000 miles (5000 km) or 3 months-whichever comes first.
Vehicles with Light Duty Emissions (8500 GVWR or less).
If none of them is true, change the oil every 7,500 miles (1 2 500 km) or 12
months-whichever comes first. Change the filter at the first oil change and at
every other oil change after that.
Vehicles with Heavy Duty Emissions (8501 GVWR or more).
If none of them is true, change the oil every 6,000 miles (1 0 000 km) or 12
months-whichever comes first. Change the filter at the first oil change and at
every other oil change after that if mileage determines when you change your
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I CAUTION
I 10 Operating the engine with the air cleaner off can cause you or others
to be burned. The air cleaner not only cleans the air, it
stops flame
if the engine backfires.
If it isn’t there, and the engine backfires, y(--
could be burned. Don’t drive with it
off, and be cr-ful working on
the engine with the air cleaner
off.
~
NOTICE I
If the air cleaner is off, a backfire can cause a damaging engine fire. And,
dirt
can easily get into your engine, which will damage it. Always have the
air cleaner
in place when you’re driving.
Ib remove the air cleaner filter on a gas engine, turn the wing nuts
counterclockwise. Remove the cover and change the filter.
-
Automatic Transmission Fluid
When to Check and Change:
A good time to check your automatic transmission fluid level is when the
engine
oil is changed. Refer to the Maintenance Schedule to determine when
to change your fluid. See “Scheduled Maintenance Services” in \
the Index.
How to Check:
Because this operation can be a little difficult, you may choose to have this
done at a General Motors dealership Sewice Department.
If you do it yourself, be sure to follow all the instructions here, or you could
get
a false reading on the dipstick.
NOTICE I
I
Too much or too little fluid can damage your transmission. Too much can
mean that some of the fluid could come out and fail
on hot engine parts,
I
starting a fire. Be sure to get an accurate reading if you check-your
transmission fluid.
Wait at least
30 minutes before checking the transmission fluid level if you
have been driving:
When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic-especially in hot weather.
While pulling a trailer.
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Service & Appearance Care
Windshield Wipers
The windshield wiper motor is protected by a circuit breaker and a fuse. If
the motor overheats due to heavy snow, etc., the wiper will stop until the
motor cools.
If the overload is caused by some electrical problem and not
snow, etc., be sure to get
it fixed,
Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power windows and other power
accessories. When the current load
is too heavy, the circuit breaker opens
and
closes, protecting the circuit until the problem is fixed or goes away.
Trailer Wiring Harness
The optional seven-wire trailer wiring harness is protected by an in-line fuse
in the battery feed wire. This fuse is near the junction
block. See “Trailer
Wiring Harness” in the Index for more information.
Fuse Block
m
, .. .
i
-+ lW -
-=
. . . . . . . . .
..
K2644
The fuse block is in
the instrument panel on the driver’s side.
You can remove fuses with a fuse extractor, if you have one. To remove
fuses
if you don’t have one, hold the end of the fuse between your thumb
and index finger and pull straight out.
Be sure to use the correct fuse.
If you ever have a problem on the road and
don’t have a spare fuse, you can “borrow” one of the correct value. Just pick
some feature of your vehicle that you can get along without-like the radio \
or
cigarette lighter-and use
its fuse, if it is of the value you need. Replace it
as
soon as you can. See “Fuses and Circuit Breakers” in the Index for more
information.
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Your warranty does not r-rer parts or co ~~ ronents that fail because -
If you put things inside your vehicle-like suitmes, LWWIY, pac;Kages, or
anything else-they will go as fast as the vehicle goes. If you have to stop
or turn quickly, or if there is a crash, they’ll keep going.
I
Things you put inside your vehicle can strike and injure people in a
, sudden stop or turn, or in a crash.
9 Put things in the cargo area of your vehicle. Try to spread the
Never stack heavier things, like suitcases, inside the vehicle so
weight evenly.
that some
of them are above the tops of the seats.
When you carry something inside the vehicle, secure it
whenever you can. I
I Don’t have a seat folded down unless you need to. I
Trailering Package
GROSS COMBINATION WEIGHT RATING
(GCWR)
PO340
If your vehicle comes with the Trailering Package, there is al\
so a load rating
which includes the weight of the vehicle
and the trailer it tows. This rating is
called the
Gross Combination Weight Rating (GCWR).
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Service & Appearance Care
When you weigh your trailer, be sure to include the weight of everything you
put in it. And, remember to figure the weight of the people inside as part of
your load.
Your dealer can help you determine your
GCWR.
Add-on Equipment
When you carry removable items, like snow plow blades, you may\
need to
put a limit on how many people you carry inside your vehicle. Be sure to
weigh your vehicle before you buy and install the new equipment.
NOTICE 1
rims
We don’t make tires. Your new vehicle comes with high quality tires made by
a leading tire manufacturer. These tires are warranted by the tire
manufacturers and their warranties are delivered with every new \
vehicle.
If
your spare tire is a different brand than your road tires, you will have a tire
warranty folder from each of these manufacturers.
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r ENGINE EMISSIONS CLASSIFICATION I
VIN Code
Z
H
K
C
J
F
N
Enaine Description
4.3L V6TTBI
with 8500 GVWR and below
with 8501 GVWR and above
5.0L V8TTBI
5.7L V8TTBI
with 8500 GWR and below
with 8501 GVWR and above
6.2L V8IDiesel
6.2L V8IDiesel
6.5L V8IDiesel
7.4L V8/TBI
.Except 454
SS Model
with 454
SS Model
L
Emissions I
LD
HD LD
LD
HD
LD
HD HD
HD LD TO268
NOTE: TBI is a throttle body injection system.
Selecting the Proper Maintenance Schedule
Here is how to tell which schedule to follow once you find the proper
maintenance chart
to use.
MAINTENANCE SCHEDULE I
Is any one of these true for your vehicle?
Most trips are less than 4 miles (6 kilometers).
Most trips are less than 10 miles (16 kilometers), and the outside
The engine is at low speed most of the time (as in door-to-door delivery,
temperatures
are below freezing.
stop-and-go traffic, or commercial use).
You operate in dusty areas or off-road frequently.
You tow a trailer
If any one (or more) of these is true for your driving, follow Schedule I.
Schedule 1 is shown by a plus sign (t) on the chart.
MAINTENANCE SCHEDULE II
Follow Schedule II ONLY if none of the above conditions are true. Schedule
II is shown by a dot (.) on the chart.
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6. AIR CLEANER FILTER REPLACEMENT* -Replace at every 30,000
miles (50 000 km) or more often under dusty conditions. Ask your dealer
for the proper replacement intervals for your driving conditions\
.
7. FRONT WHEEL BEARING REPACK (2 WHEEL DRIVE ONLY) -Clean
and repack the front wheel bearings at each brake relining,
or at the
specified interval, whichever comes first.
8.
TRANSMISSION SERVICE
Automatic Transmission
-Change the transmission fluid and filter every
15,000 miles (25 000 km) for vehicles under 8,600 GVWR or every
12,000 miles
(20 000 km) for vehicles over 8,600 GVWR if the vehicle
is mainly driven under one
or more of these conditions:
In heavy city traffic.
Where the outside temperature regularly reaches 90°F (32°C) or
In hilly or mountainous terrain.
higher.
Frequent trailer pulling.
Uses such as taxi, police, delivery or other commercial service.
If the vehicle is not used mainly under any of these conditions, change
the fluid and filter every
30,000 miles (50 000 km) for vehicles under
8600 GVWR or every
24,000 miles (40 000 km) for vehicles over 8600
GVWR. See “Automatic Transmission Fluid” in the Index for more
information.
Manual Transmission -Transmission fluid does not require periodic
changing.
9. CDRV SYSTEM INSPECTION* -Check the Crankcase Depression
Regulator Valve System
for any worn, plugged or collapsed hoses. Have
the system checked as described in the Service Manual.
10. FUEL FILTER REPLACEMENT --Replace the fuel filter at the specified
interval
or sooner if clogged.
11.
SPARK PLUGS REPLACEMENT” --Replace spark plugs with the type
listed in Section
6. See “Specification Charts” in the Index.
12.
SPARK PLUG WIRE INSPECTION* -Clean wires and inspect for burns,
cracks
or other damage. Check the wire boot fit at the distributor and at
the spark plugs. Replace wires as needed.
*An Emission Control Service
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23. EXHAUST PRESSURE EGULATOR VALVE INSPECTION* -Check that
the valve works properly. Correct any binding. Inspect hoses fo\
r cracks,
chafing or decay. Replace parts
as needed.
24. TIRE AND WHEEL ROTATION AND INSPECTION -For proper wear
and maximum tire life, rotate tires
at the first 6,000 miles (10 000
kilometers) for Schedule I (t) or 7,500 miles (12 500 kilometers) for
Schedule
II (.) and then every 15,000 miles (25 000 kilometers)
thereafter.
Follow the instructions and patterns shown in Section 6.
Check tires for uneven wear or damage. If irregular or premature wear is
apparent, check wheel alignment.
Also, check for damaged wheels. See
“Tires” in the Index for more information.
For dual wheels, whenever the vehicle, wheels, or fasteners are new\
,
have the wheel fastener torque set at the first 100,
1,000 and 6,000
miles
(160, 1600 and 10 000 km).
For
3500 H.D. Models, block the tires opposite those being removed to
keep the vehicle from rolling.
25.
DRIVE AXLE SERVICE -Check readfront axle fluid level and add as
needed. Check constant velocity joints and axle seals for leaki\
ng.
Locking differential-Drain fluid at first oil change and refill. Check
fluid level and add as needed at subsequent oil changes. In dusty
areas, or trailer towing applications drain fluid at every
15,000 miles
(24 135 kilometers) and refill$
every oil change. In dusty areas,
or trailer towing applications, drain
fluid every 15,000 miles
(24 135 kilometers) and refi1l.t
Standard differential -Check fluid level and add as needed at
More frequent lubrication may be required on heavy-duty or off-road
use.
26. BRAKE SYSTEM INSPECTION -When the engine oil is changed,
inspect the lines
and hoses for proper hookup, binding, leaks, cracks,
chafing, etc. Check the parking brake adjustment, and the fluid level in
the master cylinder.
A low fluid level can indicate worn disc brake pads
which may need to be serviced$
*An Emission Control Service
tA fluid loss in these systems may indicate a problem. Have them
inspected and repaired
at once.
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Section
A
Accelerator Control System ........ 6-35
Air Cleaner
.................................... 6-1 6
Air Conditioning
................... 3.5. 6-69
Rear (Wagon Models)
................ 3-8
Refrigerant Capacity
................. 6-69
System Controls
......................... 3-6
Antenna. Fixed Mast
................... 3-21
Antilock Brakes (See “Brakes”)
System Warning Light
............. 2-70
Appearance Care
.......................... 6-57
Materials
.................................... 6-64
Arbitration Program
........................ 8-3
Audio Systems
............................. 3-1 2
AM Radio
................................... 3-1 3
AM-FM Stereo Audio System
with Cassette Deck
.............. 3-14
AM-FM Stereo Audio System
with Cassette Deck and Equalizer
.............. 3-1 7. 3-1 9
Cassette Deck ............................... 3-1 6
Cassette Tape Player Care
.......... 3-21
Automatic Transmission
............... 2-1 7
FI uid
............................................ 6. 1 7
Axle
Front
................................ 2.32. 6-24
Rear
............................................ 6-24
Rear Locking
............................. 2-22
B
Battery ........................................... 6-37
Belts (See “Safety Belts”)
Better Business Bureau Mediation
..................................... 8-3
Blizzard
.......................................... 4-55
Brakes
Adjustment
................................. 4-18
Antilock
...................................... 4-15
Antilock Warning Light
............ 2-70
Fluid
........................................... 6-32
Four-wheel Antilock
................. 4-16
Hydro-Boost System
(Hydraulic Pump)
................. 6-33
Master Cylinder
........................ 6-32
Parking
....................................... 2-23
Pedal Travel
.............................. 4-18
Rear Drum Brakes
................... 4-18
Replacing Parts
........................ 6-33
System Warning Light .2-69, 4-17
Trailer
......................................... 4-60
Wear Indicators
........................ 4-17
Braking
.......................................... 4-13
In Emergencies
........................ 4-18
Break-In, New Vehicle
................ 2-11
Bulb Replacement ....................... 6-37
Replacement Chart
.................. 6-72
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