1998 CHEVROLET ASTRO lock

Downloaded from www.Manualslib.com manuals search engine Underhood Electrical Center
c
SThRTER ENABLE ENABLE =CLAY
(,,,) (-) (COLI-
I
I
[ LIGHTING 1
(7)
(T)
(-)
(-)
The underhood electrical center is located toward the
rear
of the engine compartment on the driver’s side.
Lift the hood and open
the cover to gain access to this
fuse block.
Feed Usage
AUX B Upfitter Battery Feed
AUX A Upfitter Accessory Feed
Relay
A/C Relay (Rear Heat and A/C)
Upfitter Accessory Relay
Starter Enable Relay
A/C Enable Relay
Export Only Relay
Fuel Pump Relay
6-64

Downloaded from www.Manualslib.com manuals search engine Rear Axle Capacity
Standard Rear Axle . . . . . . . . . . . . . . 3.5 pint (1.7 L)
Locking Rear Axle . . . . . . . . . . . 3.5 pint (1.7 L)
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used. If
you’re not sure, ask your dealer.
Refrigerant should be added only by a qualified
NC technician.
Air Conditioning Refrigerant Capacity
mPe
R- 134a
R- 134a
System
C-60**
C-69***
*All quantities are approximate.
**Front
A/C only.
***Front and Rear A/C.
Quantity*
2 lbs. (0.91 kg)
3 lbs,
(1.36 kg)
NOTICE:
R-134a refrigerant is not compatible with R-12
refrigerant in an air conditioning system. R-12 in
an R-134a system
will cause compressor failure,
refrigerant oil sludge
or poor air conditioning
system performance.
6-68

Downloaded from www.Manualslib.com manuals search engine Short TripKity Maintenance Schedule
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals. The services shown
at 150,000 miles
(240 000 km) should be performed at
the same interval after 150,000 miles (240 000 km).
See “Owner Checks and Services’’ and “Periodic
Maintenance Inspections” following.
Footnotes
The U.S. Envlronmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will
not nullify
the emission warranty or limit recall liability prior to the
completion
of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the maintenance
be recorded.
# Lubricate the front suspension, ball joints and kingpin
bushings, steering linkage and transfer case shift linkage,
parking brake cable guides, and brake pedal springs.
+ A good time to check your brakes is during tire
rotation. See “Brake System Inspection” under “Periodic
Maintenance Inspections” in Part
C of this schedule.
** Drive axle service (see “Recommended Fluids and
Lubricants”
in the Index for proper lubricant to use):
0
0
0
Locking Differential -- Drain fluid and refill at first
engine oil change. At subsequent oil changes, check
fluid level and add fluid as needed. If driving
in
dusty areas or towing a trailer, drain fluid and refill
every 15,000 miles
(25 000 km).
Standard Differential
-- Check fluid level and add
fluid as needed at every oil change. If driving in
dusty areas or towing a trailer, drain fluid and refill
every 15,000 miles
(25 000 km).
More frequent lubrication may be required for
heavy-duty use.
7-8

Downloaded from www.Manualslib.com manuals search engine Long TripMighway Maintenance Schedule
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals. The services shown
at
150,000 miles (240 000 km) should be performed at
the same interval after
150,000 miles (240 000 km).
See “Owner Checks and Services” and “Periodic
Maintenance Inspections” following.
Footnotes
The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will
not nullify
the emission warranty or limit recall liability prior to the
completion
of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at
the indicated intervals and the maintenance
be recorded.
## Lubricate the front suspension, ball joints and
kingpin bushings, steering linkage and transfer case
shift linkage, parking brake cable guides, and brake
pedal springs.
+ A good time to check your brakes is during tire
rotation. See “Brake System Inspection” under “Periodic
Maintenance Inspections”
in Part C of this schedule.
#’* Drive axle service (see “Recommended Fluids and
Lubricants”
in the Index for proper lubricant to use):
0 Locking Differential -- Drain fluid and refill at first
engine
oil change. At subsequent oil changes, check
fluid
level and add fluid as needed.
fluid as needed at every engine oil change.
0 Standard Differential -- Check fluid level and add
7-29

Downloaded from www.Manualslib.com manuals search engine At Least Twice a Year Automatic lkansmission Check
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. If your vehicle has a built-in child
restraint, also periodically make sure the harness straps,
latch plates, buckle, clip, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt and built-in child restraint system parts. If
you see anything that might keep a safety belt or built-in
child restraint system from doing its
job, have it
repaired. Have any torn or frayed safety belts or harness
straps replaced.
Also look for
any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag system
does
not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace blade
inserts that appear worn or damaged or that streak or
miss areas
of the windshield. Also see “Wiper Blades,
Cleaning” in the Index. Check the transmission fluid
level; add if needed.
See
“Automatic Transmission’’ in the Index. A fluid loss
may indicate a problem. Check the system and repair
if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified in Part
D.
Body Lubrication Service
Lubricate all body door hinges, the body hood, fuel
door and rear compartment hinges, latches and locks
including interior glove box and console doors, and any
moving seat hardware. Lubricate the hood safety lever
pivot and prop rod pivot. Part
D tells you what to use.
More frequent lubrication may be required when
exposed to a corrosive environment.
7-42

Downloaded from www.Manualslib.com manuals search engine Starter Switch Check
I A CAUTION: I
When you are doing this check, the vehicle could
move suddenly.
If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake (see “Parking
Brake” in the Index if necessary) and the
regular brake.
NOTE: Do not use the accelerator pedal, and be
ready to turn off the engine immediately
if it starts.
3. Try to start the engine in each gear. The starter
should work only
in PARK (P) or NEUTRAL (N).
If the starter works in any other position, your
vehicle needs service.
Brake-Transmission Shift Interlock (BTSI) Check
A CAUTION:
When you are doing this check, the vehicle could
move suddenly.
If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough
room around the vehicle. It should be parked
on a level surface.
2.
3.
Firmly apply the parking brake (see “Parking Brake”
in the Index if necessary).
NOTE: Be ready to apply the regular brake
immediately if the vehicle begins to move.
With the engine
off, turn the key to the RUN position,
but don’t start
the engine. Without applying the regular
brake,
try to move the shift lever out of PARK (P) with
normal effort. If the shift lever moves out of
PARK (P), your vehicle’s
BTSI needs service.
7-43

Downloaded from www.Manualslib.com manuals search engine Ignition Transmission Lock Check While parked, and with the parking brake set, try
to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the shift
lever is in PARK
(P).
0 The key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK (P) Mechanism Check
I A CAUTION: I
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front
of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move. Park
on a fairly steep hill, with the vehicle facing
downhill. Keeping your
foot on the regular brake, set the
parking brake.
0 To check the parking brake’s holding ability: With
the engine running and transmission
in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal.
Do this until the vehicle is
held
by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift
to PARK (P). Then
release all brakes.
Underbody Flushing Service
,At least every spring,
use plain water to flush any
corrosive materials from
the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
7-44

Downloaded from www.Manualslib.com manuals search engine I
Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
Engine Oil
Engine Coolant
FLUIDLUBRICANT
Engine Oil with the American
Petroleum Institute Certified For
Gasoline Engines “Starburst”
symbol of the proper viscosity.
To
determine the preferred viscosity
for your vehicle’s engine, see
“Engine Oil” in the Index.
50/50 mixture of clean water
(preferably distilled) and use only
GM Goodwrench@ DEX-COOL@
or Havoline@ DEX-COOL@
Coolant. See “Engine Coolant” in
the Index.
USAGE
Hydraulic Brake
System
Parking Brake Cable Guides
Power Steering
System
Automatic
Transmission
Key Lock
Cylinders
FLUIDLUBRICANT
Delco Supreme 11 @ Brake Fluid
(GM Part
No. 12377967 or
equivalent DOT-3 Brake Huid).
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI
# 2, Category LB
or GC-LB.
GM Power Steering Fluid (GM
Part No. 1052884
- 1 pint,
10500 17
- 1 quart, or equivalent).
DEXR0N’-I11 Automatic
Transmission Fluid.
Multi-h ose Lubricant,
Superlube
% (GM Part
No. 12346241 or equivalent).
7-47