ECU CHEVROLET ASTRO PASSENGER 1994 1.G User Guide

Downloaded from www.Manualslib.com manuals search engine 8. Press BAND and 000 will appear again. Now you are ready to enter the
last three digits of your code.
9. Repeat steps 6 and 7 for the last three digits of your code.
10. Press
BAND and rEP will appear for 5 seconds and then 000 will
11. Repeat steps
6 through 10. This time SEC will appear-indicating that
appear.
the radio
is secure.
To Unlock The System After A Power Loss
When battery power is reapplied to a secured radio, the radio won’t turn on
and
LOC will appear on the display.
Enter your secret code as follows: pause no more than
15 seconds between
steps.
1. Turn the ignition on. (Radio off.)
2. Depress the SET button. The display will show 000.
3. Enter the six digits of the code following steps 6-9 above. The display
4. Depress the BAND knob and the time appears - indicating that the
disabling sequence was successful. If the display indicates
SEC, the
numbers did not match and the unit is still secured.
will show the numbers as entered.
Disabling The Theft System
1.
2.
3.
4.
5.
6.
Depress presets 1 and 4 for 5 seconds with ignition on and radio power
off. The display will show
SEC, indicating the unit is in the secure
mode.
Depress the
SET button. The display will show 000.
Enter the first three digits of the code following steps 6 and 7 of the
preceding paragraphs. The display
will show the numbers as entered.
Depress
the BAND knob. The radio will display 000.
Enter the second three digits of the code. The display will show the
numbers as entered.
Depress the
BAND knob. If the display shows bb- - - ”, the disabling
sequence was successful. The numbers matched the user-selected code
or the factory back-up code, and the unit
is in the UNSECURED mode.
If the display shows
SEC, the disabling sequence was unsuccessful and
the numbers did not match either of the codes and the unit will remain
in the SECURED mode.
3-24

Downloaded from www.Manualslib.com manuals search engine Winter Driving
Here are some tips for winter driving:
Have your vehicle in good shape for winter. Be sure your engine
coolant
mix is correct.
You may want to put winter emergency supplies in your vehicle.
Include an ice scraper, a small brush or broom, a supply of windshield
washer fluid, a rag, some winter outer clothing,
a small shovel, a flashlight,
a red cloth, and a couple
of reflective warning triangles. And, if you will be
driving under severe conditions, include a small bag of sand, a piece of old
carpet or a couple of burlap bags to help provide traction. Be sure you
properly secure these items in your vehicle.
Driving on Snow or Ice
Most of the time, those places where your tires meet the road probably have
good traction.
However, if there is snow or ice between your tires and the road, you can
have a very slippery situation. You’ll have a lot less traction or “grip” and
will need to be very careful.
4-20

Downloaded from www.Manualslib.com manuals search engine 0 Will the trailer parts take 3,000 psi (20 650 kPa) of pressure? If not, the
trailer brake system must not be used with your vehicle.
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 brakes. 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 t\
he
trailer brake controller by hand to be sure the brakes are working. This lets
you check your electrical connection at the same time.
During your trip, check occasionally to be sure that the load is secure, and
that the lights and any trailer brakes are still working.
4-27

Downloaded from www.Manualslib.com manuals search engine Storing The Jack and Spare Tire
Put the tire on the ground at the rear of the vehicle, with the valve stem
pointed down.
Pull the retaining bar through the center of the wheel, making sure it is
properly attached. Attach the ratchet, with the
UP side facing you, to the
extension.
Put the flat end
of the extension on an angle through the hole in the rear
door frame, above the bumper. Turn the ratchet to the right until the tire is
against the underside
of the vehicle.
You will hear two"c1icks" when the tire is all the way.
Try to move the tire
with your hands to make sure it is securely in place.
Return the jack, ratchet, extension and wheel blocks to the proper location
in the rear storage area. Replace all bolts, retainers and wing nuts in the
proper location. Secure the jacking equipment in its proper location and
replace the jack storage cover.

Downloaded from www.Manualslib.com manuals search engine 10. Remove the two screws
at the
engine cover
using
a long
handled screwdriver. The
screws are
not
supposed to come
out of the cover,
only from the
front of dash.
When removing the cover, be careful
not to damage the instrument panel or
the trim.
11. Grasp the bottom
of the cover and
slide it
backwards. Then,
lift
it up and out
of the vehicle.
To Install the Engine Cover:
1. Lift the engine cover into the vehicle and slide it all the way forward.
Make sure the rubber seal is over the latches.
2. Install the two screws at the engine cover. Do not tighten the screws all
the way.
3. Press down on each of the two latches at the bottom of the cover. Make
sure they are secure.
4. Tighten the two screws at the engine cover.
5. Turn the bracket into position and install the bolt. Tighten the nut at the
other end
of the bracket.
6. Put the heater duct over the engine cover studs. Push up on the duct
gently until it snaps into place.
7. Reconnect the electrical connector for the cigarette lighter.
6- 18

Downloaded from www.Manualslib.com manuals search engine If you have the 4.3L engine (VIN Code W) with the square air cleaner, you
can change the air cleaner filter without removing the engine cover. Just lift
the hood, unsnap both clips and remove
the top. After changing the filter,
snap both clips to secure
the air cleaner. Be sure air cleaner lid is correctly
positioned to seal out dust and contaminants that are harmful
to your engine.
Refer to the Maintenance Schedule to determine when to replace the air
filter.
See “Scheduled Maintenance Services”
in the Index.
NOTICE:
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 drivin\
g.
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 GM dealership Service Department.
If you do it yourself, be sure to follow all the instructions here,
or you could
get a false reading on the dipstick.
6-20

Downloaded from www.Manualslib.com manuals search engine Tire Chains
NOTICE:
If your vehicle has P245/60R15 size tires, don’t use tire chains;
they can damage your vehicle.
If you have other size tires, use tire chains only where legal and
only when you must. Use only
SAE Class “S” type chains that
are the proper size for your tires. Install them on the rear axle
tires and tighten them
as tightly as possible with the ends
securely fastened. Drive slowly and follow the chain
manufacturer’s instructions. If you can hear the chains
contacting your vehicle, stop and retighten them.
If the contact
continues, slow down until it stops. Driving too fast with chains
on will damage your vehicle.
Appearance Care
P
Remember, cleaning products can be hazardous. Some are toxic. Others can
burst into flame if you strike a match or get them on a hot part
of the
vehicle. Some are dangerous if
you breathe their fumes in a closed space.
When you use anything from
a container to clean your vehicle, be sure to
follow the manufacturer’s warnings and instructions. And alway\
s open your
doors or windows when you’re cleaning the inside.
6-54