1993 CHEVROLET ASTRO PASSENGER check engine light

Downloaded from www.Manualslib.com manuals search engine Your Driving and the Road
On two-lane highways or undivided multilane highways that do not have
controlled access, you’ll want to watch for some situations not usually found
on freeways. Examples are: stop signs and signals, shopping cen\
ters with
direct access to the highway, no passing zones and school zones, vehicles
turning left and right
off the road, pedestrians, cyclists, parked vehicles, and
even animals.
Highway Hypnosis
Is there actually such a condition as “highway hypnosis?’’ Or is it just plain
falling asleep at the wheel? Call it highway hypnosis, lack of awareness, or
whatever.
There is something about an easy stretch
of road with the same scenery,
along with the hum
of the tires on the road, the drone of the engine, and the
rush
of the wind against the vehicle that can make you sleepy. Don’t le\
t it
happen to you!
If it does, your vehicle can leave the road in less than a
second, and you could crash and be injured.
What can you do about highway hypnosis? First, be aware that it can
happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a comfortably cool interior.
Keep your eyes moving. Scan the road ahead and to the sides. Check
your rearview mirrors frequently and your instruments from time \
to time.
This can help you avoid a fixed stare.
Wear good sunglasses in bright light. Glare can cause drowsiness. But
don’t wear sunglasses at night. They will drastically reduce \
your overall
vision at the very time you need all the seeing power you have.
If you get sleepy, pull off the road into a rest, service, or parking area
and take a nap, get some exercise, or both. For safety, treat\
drowsiness
on the highway as an emergency.
As in any driving situation, keep pace with traffic and allow adequat\
e
following distances.
4-34

Downloaded from www.Manualslib.com manuals search engine Will the trailer brake parts take 3,000 psi (20 650 kPa) of pressure? If
not, the trailer brake system must not be used with your vehi\
cle.
if everything checks out this far, then make the brake fluid tap at the
port on the master cylinder that sends fluid to the rear brak\
es. But don’t use copper tubing for this.
If you do, it will bend and finally break off.
Use steel brake tubing.
Driving with a Trailer
Towing a trailer requires a certain amount of experience. Before setting out
for the open road, you’ll want to get to know your rig. Acquaint yourself with
the feel of handling and braking with the added weight of the trailer. And
always keep in mind that the vehicle you are driving is now a good deal
longer and not nearly
so responsive as your vehicle is by itself.
Before you start, check the trailer hitch and platform, safety \
chains, electrical
connector, lights, tires and mirror adjustment.
If the trailer has electric brakes,
start your vehicle and trailer moving and then apply the trail\
er brake controller
by hand to be sure the brakes are working. This lets you check your
electrical connection at the same time.
If you have a rear-most window open and you pull a trailer with your
vehicle, carbon monoxide (CO) could come into your vehicle. You
can’t see or smell CO. It can cause unconsciousness or death (see
“Engine Exhaust” in the Index).
To maximize your safety when towing
a trailer:
Have your exhaust system inspected for leaks and make
Keep the rear-most windows closed.
If exhaust does come into your vehicle through a window in the
rear, or another opening, drive with your front, main heating \
or
cooling system
on and with the fan on any speed. This will
bring fresh, outside air into your vehicle.
Do not use MAX NC
because it only recirculates the air inside your vehicle. See
“Comfort Controls” in the Index.
necessary repairs before starting
on your trip.
During your trip, check occasionally to be sure that the load is secure, and
that the lights and any trailer brakes are still working.
4-47

Downloaded from www.Manualslib.com manuals search engine Your Driving and the Road
Following Distance
Stay at least twice as far behind the vehicle ahead as you w\
ould when
driving your vehicle without a trailer. This can help you avoi\
d situations that require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when you’re to\
wing a trailer.
And, because you’re a good deal longer, you’ll need
to go much farther
beyond the passed vehicle before you can return
to your lane.
Backing Up
Hold the bottom of the steering wheel with one hand. Then, to move the
trailer to the left, just move your hand to the left.
To move the trailer to the
right, move your hand to the right. Always back up slowly and\
, if possible,
have someone guide you.
Making Turns
When you’re turning with a trailer, make wider turns than n\
ormal. Do this so
your trailer wheels won’t strike soft shoulders, curbs, road \
signs, trees, or
other objects. Avoid jerky or sudden maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle has to have a different turn signal
flasher and extra wiring. The green arrows on your instrument \
panel will flash
whenever you signal a turn or lane change. Properly hooked up,\
the trailer lights will also flash, telling other drivers you’re about to turn, change lanes,
or stop.
When towing a trailer, the green arrows on your instrument pan\
el will flash for
turns even
if the bulbs on the trailer are burned out. Thus, you may think \
drivers behind you are seeing your signal when they are not. \
It’s important to
check occasionally
to be sure the trailer bulbs are still working.
Driving on Grades
Reduce speed and shift to a lower gear before you start down a long or
steep downgrade. If you don’t shift down, you might have to use your brakes
so much that they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your speed to \
around
45 mph
(70 km/h) to reduce the possibility of engine and transmission overheating.
You should use
D (or as you need to, a lower gear) when towing a trailer.
Operating your vehicle in
D when towing a trailer will minimize heat buildup
and extend the life
of your transmission.
4-48

Downloaded from www.Manualslib.com manuals search engine Parking on Hills
You really should not park your vehicle, with a trailer attached, \
on a hill. If
something goes wrong, your rig could start to move. People can be injured,
and both your vehicle and the trailer can be damaged.
But
if you ever have to park your rig on a hill, here’s how to do it:
1. Apply your regular brakes, but don’t shift into P (Park) yet.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the regular brakes until the
chocks absorb
the load.
4. Reapply the regular brakes. Then apply your parking brake, and \
shift to
P (Park).
5. Release the regular brakes.
When You Are Ready to Leave After Parking on a Hill
1. Apply your regular brakes and hold the pedal down while you:
Start your engine.
Shift into a gear; and
Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re pulling a trailer. See
the Maintenance Schedule for more
on this. Things that are especially
important in trailer operation are automatic transmission fluid (don’t ove\
rfill),
engine oil, axle lubricant, belt, cooling system, and brake adj\
ustment. Each of
these is covered in this manual, and the Index will help you find them
quickly. If you’re trailering, it’s a good idea
to review these sections before
you start your trip.
Check periodically
to see that all hitch nuts and bolts are tight.
mailer Light Wiring
See “Trailer Wiring Harness” in the Index.
4-49

Downloaded from www.Manualslib.com manuals search engine 2. Get the vehicles close enough so the jumper cables can reach, but be
sure the vehicles aren’t touching each other.
If they are, it could cause a
ground .connection you don’t want. You wouldn’t be able
to start your
vehicle, and the bad grounding could damage the electrical syst\
ems.
1 CAUTION
I
A You could be injured if the vehicles roll. Set the parking brake firmly
b on each vehicle. Put an automatic transmission in P (Park) or a
I manual transmission in N (Neutral).
3. Turn off the ignition on both vehicles. Turn off all lights that aren’t
needed, and radios. This will avoid sparks and help save both \
batteries.
And
it could save your radio!
1’ NOTICE
Iv dar li 1. The Pairs f you leave your radio on, it could be t
Nouldn’t be covered bv vour warrallLv I
4. Open the hoods and locate the batteries. Find the positive (t) and the
negative
(-) terminals on each battery.
1 CAUTION
A Using a match near a battery can cause battery gas to explode.
People have been hurt doing this, and some have been blinded. \
Use
a flashlight
if you need more light.
You don’t need
to add water to the Delco Freedom@ battery installed
in every new
GM vehicle. But if a battery has filler caps, be sure the
right amount of fluid is there.
If it is low, add water to take care of
that first. If you don’t, explosive gas could be present.
Battery fluid contains acid that can burn you. Don’t get
it on you. If
you accidentally get it in your eyes or on your skin, flush the place
I with water and get medical help immediately.
5. Check that the jumper cables don’t have loose or missing in\
sulation. If
they do, you could get a shock. The vehicles could be damaged\
, too.
Before you connect the cables, here are some things you should\
know.
Positive
(t) will go to positive (+) and negative (-) will go to negative
(-) or a metal engine part. Don’t connect (t) to (-) or you’ll get a
short that would damage the battery and maybe other parts,
too.
5-4

Downloaded from www.Manualslib.com manuals search engine Senrice & Appearance Care
Hood Latches and Hood Hinge
The Maintenance Schedule will tell you how often to lubricate the hood latch
and hood hinge assembly. See “Recommended Fluids and Lubricants”\
in the
Index for the proper lubricant
to use.
Propeller Shaft Slip Splines/Universal Joints
The Maintenance Schedule will tell you how often the slip splines must be
lubricated. See “Recommended Fluids and Lubricants” in the \
Index for the
proper lubricant
to use.
Constant Velocity Joints (All- Wheel Drive Only)
The Maintenance Schedule will tell you how often to lubricate the the
constant velocity joints. See “Recommended Fluids and Lubrican\
ts” in the
Index for the proper lubricant
to use.
Sliding Door Tracks
Your vehicle’s sliding door has three tracks which need lubricatio\
n.
For the upper and lower tracks, open the door, wipe the track\
clean and then
lubricate with Lubriplate@ White Grease.
For the outside middle track, close the door after you finish \
the upper and
lower tracks. Then, wipe the track clean and lubricate with Lu\
briplateB White
Grease.
Body
Normal use of your vehicle will cause metal-to-metal wear at some points \
on
the cab and body
if they are not lubricated.
tor exposed surfaces, such as door checks, door lock bolts, lock s\
triker
plates, dovetail bumper wedges, etc., a thin film
of engine oil should be
applied.
Where oil holes are provided in the body or cab, a dripless \
oil can be used.
The seat adjusters and seat track should be lubricated with chassis grease.
Door weatherstrips and rubber hood bumpers should be lightly coated with
a
rubber lubricant.
Never use
too much of any lubricant and be sure to wipe up any extra
lubricant when you are finished.
Some parts that need lubricating are hard
to get at. Window regulators and
controls are inside the doors. You can get to these by removing the trim
panels.
6-40

Downloaded from www.Manualslib.com manuals search engine Headlights
The headlight wiring is protected by a circuit breaker in the light switch. An
electrical overload will cause the lights
to go on and off, or in some cases to
remain
off. If this happens, have your headlight wiring checked right away.
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 s\
top until the
motor cools. If the overload is caused by some electrical prob\
lem 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 a\
nd other power
accessories. When the current load is too heavy, the circuit b\
reaker 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 bloc\
k. See “Trailer
Wiring Harness” in the Index.
Fuse Block
K3629
The fuse block is under the instrument panel on the driver’\
s side. You can
remove the cover with
a screwdriver and then remove fuses with a fuse
extractor. 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.
6-63

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Cam
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
cigarette lighter-and
as soon
as you can.
information.
Capacities
vehicle that you can get along without-like the radio or
use its fuse,
if it is of the value you need.. Replace it
See “Fuses and Circuit Breakers” in the Index for more
and Specification Charts
Replacement Parfs
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.
Engine Identification
IGINE IDENTIFICATION
Liter VIN
Fuel
Code
BY Displacement System
Engine
Type
Produced Emissions
4.3L
L.D. U.S. CPI** W V6 4.3L L.D.
us. TBI* Z V6
* Throttle Body Electronic Fuel Injection
** Central Port Electronic Fuel Injection
~0004
Wheel Nut Torque
I Base or Optional Wheel I 100 ft. Ibs. (140
N-m) I
I TO21 6 I
Cooling System
ENGINE With Rear Heater
Without Rear Heater
VIN CODE
QUANTITY
4.3L I Z
16.5 Quarts (1 5.5 Liters)
13.5 Quarts (1 2.8 Liters)
4.3L I w
16.5 Quarts (I 5.5 Liters) 13.5 Quarts (1 2.8 Liters)
All quantities are approximate.
After refill, the level
MUST be checked.
TO006
6-64