maintenance CHEVROLET ASTRO PASSENGER 1994 1.G User Guide

Downloaded from www.Manualslib.com manuals search engine How to Check Lubricant
If the level is below
the bottom of the filler
plug hole, you’ll need
to add some lubricant.
Add enough lubricant
to raise the level to the
bottom of the filler
plug hole (top arrow
shows filler plug hole,
lower arrow shows
drain plug hole.)
What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids and Lubricants”
in the Index.
Front Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant and when to change it. See “Scheduled Maintenance Services”
in
the Index.
How to Check Lubricant
x.
If the level is below
the bottom of the filler
plug hole, you’ll need
to add some lubricant.
Add enough lubricant
to raise the level to the
bottom of the filler
plug hole.
6-25

Downloaded from www.Manualslib.com manuals search engine What to Use
Refer to the Maintenance Schedule to determine what kind of lubricant to
use. See “Recommended Fluids
and Lubricants” in the Index.
Engine Coolant
The following explains your cooling system and how to add coolant when it
is low. If
you have a problem with engine overheating, see “Engine
Overheating” in the Index.
The proper coolant for your vehicle will:
0 Give freezing protection down to -20°F (-29”C), or -34°F (-37°C) in
0 Give boiling protection up to 258°F (125 “C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning gages work as they should.
Canada
and for vehicles with the cold climate option.
What to Use
Use a mixture of one-half clean water (preferably distilled) and one-half
antifreeze
that meets “GM Specification 6038-M,” which won’t damage
aluminum parts. You can also use a recycled coolant conforming to
“GM
Specification 603%”’ with a complete coolant flush and refill. If you use
this mixture,
you don’t need to add anything else.
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Downloaded from www.Manualslib.com manuals search engine Unscrew the cap and
wipe the dipstick with
a clean rag. Replace
the cap and
completely tighten it.
Then remove the cap
again and look at the
fluid level
on the
dipstick.
When the engine compartment is hot, the level should be at the HOT
mark.
When the engine compartment is cool, the level should be at the FULL
COLD mark.
What to Add
Refer to the Maintenance Schedule to determine what kind of fluid to use.
See “Recommended Fluids and Lubricants’’ in the Index.
6-30

Downloaded from www.Manualslib.com manuals search engine Brakes
Brake Master Cylinder
Your brake master cylinder is here. It is filled with DOT-3 brake fluid.
There
are only two reasons why the brake fluid level in your master cylinder
might go down. The first is
that the brake fluid goes down to an acceptable
level during normal brake lining wear. When new linings
are put in, the
fluid level goes back up. The other reason is that fluid
is leaking out of the
brake system.
If it is, you should have your brake system fixed, since a leak
means that sooner or later your brakes won’t work well, or won’t work at
all.
So, it isn’t a good idea to “top off’ your brake fluid. Adding brake fluid
won’t correct a leak. If
you add fluid when your linings are worn, then
you’ll have
too much fluid when you get new brake linings. You should add
(or remove) brake fluid, as necessary, only when work is done
on the brake
hydraulic system.
Refer
to the Maintenance Schedule to determine when to check your brake
fluid. See “Periodic Maintenance Inspections” in the Index.
6-32

Downloaded from www.Manualslib.com manuals search engine Other Maintenance Rems
Front Suspension and Steering Linkage
Refer to the Maintenance Schedule to determine how often to lubricate the
fittings and what type of lubricant to use.
Front Wheel Bearing (Two-Wheel Drive)
If your vehicle is two-wheel drive, it has wheel bearings that must be
cleaned and repacked.
Refer to the Maintenance Schedule to determine how often this must be
done.
Single Belt Accessory Drive
Your new vehicle uses a serpentine belt that is lighter, and more durable
than systems with several belts.
The belt runs over or around the pulleys on the engine.
A tensioner is used
to keep the belt tight at all times. The tensioner also makes replacing the
belt easier. If you need to replace the belt, be sure to get the correct
replacement belt. Your dealership or parts supplier can help you with this.
The Accessory Drive Belt Routing label on your vehicle will show you how
to route the belt your vehicle uses.
Windshield Wiper Blade Inserts
To replace your
windshield wiper
blade inserts, lift the
wiper
arm away from
the windshield. Pinch
the two tabs on the
wiper
arm and slide
the insert out of the
blade. Slide the new
one in place. Make
sure the tabs are
locked into position.
6-41

Downloaded from www.Manualslib.com manuals search engine Air Conditioning
Every now and then have your dealership check your air conditioning
system to be sure it has not
lost any cooling ability. If you think the system
is not working properly, have your dealership
check it out as soon as
possible.
The air conditioning will not work when the temperature is below
40°F
(4 O C).
Lubrication
Accelerator Control System
Refer to the Maintenance Schedule to determine how often the accelerator
linkage pivot points must be lubricated and what type of lubricant
to use.
Accelerator cables and cruise control cables should not be lubricated. Any
cables that are worn or are hard to pull should be replaced.
When cleaning the engine compartment with water or steam, avoid directing
the flow onto the throttle linkage in a manner that would cau\
se moisture
to
enter the cables.
Hood Latches and Hood Hinge
Refer to the Maintenance Schedule to determine how to lubricate the hood
latch and hood hinge assembly.
Sliding Door Tracks
Your vehicle’s sliding door has three tracks which need lubrication.
For the upper and lower tracks, open the door, wipe the track\
clean and then lubricate with Lubriplate
TM 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
Lubriplate
TM 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.
For exposed surfaces, such as door checks, door lock bolts, lock striker
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.
6-42

Downloaded from www.Manualslib.com manuals search engine Door weatherstrips and rubber hood bumpers should be wiped clean with a
wet cloth and 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.
Refer to the Maintenance Schedule to determine how often to lubricate
these items and what type
of lubricant to use.
Lock Cylinders
To be sure your locks operate properly, they must be lubricated.
Refer to the Maintenance Schedule to determine how often to lubricate them
and what type of lubricant to use.
You should not use penetrating oils because they could wash out
the factory
installed lubricant and cause the lock to bind. De-icers which contain
alcohol could also
wash away the lubricant, so be sure to lubricate the lock
after using a de-icer of this type.
Exhaust System
To help prevent damage to your exhaust system, do not continue to drive
your vehicle if you notice:
Engine misfiring
Loss of performance
Other unusual operating conditions
Have your engine and exhaust system serviced regularly.
Three- Way Catalytic Converter
Your vehicle’s three-way catalytic converter is designed to reduce the
pollutants in your vehicle’s exhaust. Use only unleaded fuel in your vehicle.
If you use leaded fuel, you could damage your three-way catalytic converter
and other engine components.
Engine Control Module System
This system has an oxygen (02) sensor that helps keep your engine’s
air-fuel mixture at a proper level. Use only unleaded fuel in your vehicle.
If
you use leaded fuel, you could damage your oxygen (02) sensor and affect
your vehicle’s emissions.
6-43

Downloaded from www.Manualslib.com manuals search engine Tire Inspection and Rotation
To make your tires last longer, have them inspected and rotated at the
mileages recommended
in the Maintenance Schedule. See “Scheduled
Maintenance Services” in the Index.
Use this rotation
pattern.
Do not
include compact spare
tire
in rotation.
If your vehicle has front tires
with different load ratings or tread designs
(such as all season
vs. on/off road) than the rear tires, don’t rotate your tires
front to rear.
After the tires have been rotated, adjust the front and rear inflation pressure
as shown on the CertificationEire label. Make certain that all wheel nuts are
properly tightened. See “Wheel
Nut Torque” in the Index.
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Downloaded from www.Manualslib.com manuals search engine Finish Damage
Any stone chips, fractures or deep scratches in the finish should be repaired
right away. Bare metal will corrode quickly and
may develop into a major
repair expense.
Minor chips and scratches can be repaired with touch-up materials available
from your dealer or other service outlets. Larger areas
of finish damage can
be corrected in your dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust control can collect on
the underbody. If these are not removed, accelerated
corrosion (rust) can
occur on the underbody parts such as fuel lines, frame, floor pan, and
exhaust system even though they have corrosion protection.
At least every spring, flush these materials from the underbody with plain
water. Clean any areas where mud and other debris can collect. Dirt packed
in closed areas of the frame should be loosened before being flushed. Your
dealer or
an underbody vehicle washing system can do this for you.
Fiberglass Springs
I NOTICE:
Don’t use corrosive or acidic cleaning agents, engine degreas\
ers,
aluminum cleaning agents
or other harsh solvents to clean
fiberglass springs; they’ll damage the springs.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a chemical fallout.
Airborne pollutants can fall upon and attack painted surfaces on your
vehicle. This damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched into the paint surface.
Although no defect in the paint job causes this,
GM will repair, at no charge
to the owner, the surfaces
of new vehicles damaged by this fallout condition
within
12 months or 12,000 miles (20 000 km) of purchase, whichever
comes first.
6-61

Downloaded from www.Manualslib.com manuals search engine Scheduled Maintenance Services
I
Section
This section covers the maintenance required for your vehicle . Your vehicle
needs these services to retain its safety. dependability. and emission control
performance
.
A Word About Maintenance ................. . . 7-2
Your Vehicle and the Environment
......................... 7-2
Scheduled Maintenance Services
............................... 7-3
Selecting The Proper Maintenance Schedule
................. 7-3
Maintenance Schedule I
.............................. 7-4
Maintenance Schedule I1
................................ 7-6
Explanation
of Scheduled Maintenance Services .............. 7-7
Owner Checks and Services
................................ 7-10
At Least Once a Month .............. ............... 7-10
At Least Once a Year
............. ........... .... 7-10
Periodic Maintenance Inspections
............... ...... 7-12
Recommended Fluids
& Lubricants ........................... 7-13
MaintenanceRecord
....................................... 7-15
Service Station Checks
................................... 7-16
Protection
Plan
Have you purchased the GM Protection Plan? The Plan supplements
your new vehicle warranties
. See your Vehicle dealer for details .
7-1