1996 CHEVROLET ASTRO air filter

Installing 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 bolts at the engine cover.
3. Put the heater duct over the engine cover studs. Push
up
on the duct gently until it snaps into place.
4. Reconnect the electrical connectors.
5. Install the engine cover extension by gently squeezing
the sides and sliding
it into place. Make sure all of the
fastener clips engage, and the extension fits properly
in place. Replace and tighten the two screws.
5. Install the two nuts to secure the extension in place.
Air Cleaner
"""""".
To remove the air filter, lift the hood, unsnap both clips
and remove the top. After changing the filter, snap both
clips
to secure the air cleaner. Be sure the air cleaner lid
is correctly positioned to seal
out dust and contaminants
that are harmful to your engine.
Make sure the fresh air hose
is still attached after the
filter change.
6-19

Refer to the Maintenance Schedule to determine when to
replace the air filter and the crankcase ventilation filter.
See “Scheduled
N ntenance Services” in the Index.
Operating th, mgine 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, you could be burned. Don’t
drive with it
off, and be careful working on the
engine with the
air cleaner off.
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 driving.
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,
Change both the fluid and filter every
15,000 miles
(25 000 km) if the vehicle is mainly driven under one
or more of these conditions:
In heavy city traffic where the outside temperature
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery service.
If
you do not use your vehicle under any of these
conditions, change
the fluid and filter every
30,000 miles (50 000 km).
See “Scheduled Maintenance Services” in
the Index.
regularly reaches
90°F (32°C) or
higher.
6-20

Normal Maintenance Replacement
Parts
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 truck dealer.
Oil Filter..
......................... PF52
Air Cleaner Filter
.................. A 1 163C
Automatic Transmission
Filter Kit
............ ... 24200796
PCV Valve
...................... CV774C
Spark Plugs
....................... 41-932
Spark
Plug Gap ...... 0.060 inches (1.52 mm) Fuel
Filter
...
Radiator Cap .......
Wiper Blades (Front) .
Wiper Blade (Rear) . .
. . GF481
............ RC27
. . 22110158, Pin Type
. . 22154396, Pin Type
Vehicle Dimensions*
Wheelbase .............. 189.8 inches (482 cm)
Width
................... 77.5 inches (1 96.8 cm)
Height.
.................. 76.2 inches (193.5 cm)
Wheelbase
.............. 11 1.2 inches (282.4 cm)
Front Tread Width
......... 65.1 inches (165.4 cm)
Rear Tread Width
........ 65.1 inches (1 65.4 cm)
*Figures reflect base equipment only.
6-69

Maintenance Schedule
Short TripKity Definition
Follow the Short TripKity Maintenance Schedule if any
one
of these conditions is true for your vehicle:
0
0
0
0
0
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such
as frequent
driving in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
your vehicle.
If the vehicle is used for delivery service, police, taxi
or other commercial application.
One of the reasons yo~l should follow this schedule if
you operate your vehicle under any of these conditions
is
that these conditions cause engine oil to break
down soonex
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change (or
3 months, whichever occurs first). Chassis
Lubrication (or
3 months, whichever occurs first). Drive
Axle Service (or
3 months, whichever occurs fust).
At 6,000 Miles (10 000 km) -- Then Every
12,000 Miles
(20 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection,
if driving in dusty conditions. Front
Wheel Bearing Repack (2WD only) (or at each brake
relining, whichever occurs first). Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement.
Fuel Filter Replacement. Automatic
Transmission Service (Normal Conditions).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel
Tank, Cap and Lines Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Spark Plug Wire Inspection. Spark Plug Replacement.
Positive Crankcase Ventilation (PCV) Valve Inspection.
These intervals only summarize nzaintenance services.
Be sure to follow the complete maintenance schedule on
the following pages.
7-4

Maintenance Schedule
Long Tripmighway Definition Long Trip/Highway Intervals
Follow this maintenance schedule only if none of the
conditions from the Short Trip/City Maintenance
Schedule is true.
Driving a vehicle with nf.lly warmed engine under
highway conditions causes engine oil to break
down sloweE
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Char,ge (or every 12 months, whichever occurs first).
Chassis Lubrication (or every 12 months, whichever
occurs first). Drive Axle Service.
At 7,500 Miles (12 500 km) -- Then Every
15,000 Miles
(25 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement. Air Cleaner Filter Replacement. Front
Wheel Bearing Repack (2WD only)
(or at each brake
relining, whichever occurs first). Automatic
Transmission Service (Normal Conditions).
Accessory Drive Belt Inspection.
Fuel Tank,
Cap and Lines Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Spark Plug Wire Inspection. Spark Plug Replacement.
Positive Crankcase Ventilation (PCV) Valve Inspection.
These intervals only swnnzarize maintenance services.
Be sure to
follow the complete maintenance schedule on
the following pages.
Every 60,000 Miles (100 000 km): Engine
7-5

I Short Trip/City Maintenance Schedule I
15,000 Miles (25 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components; see
An Emission Control Service.
footnote ## (or every 3 months, whichever
occurs first).
0 Inspect air cleaner filter if you are driving
in dusty conditions. Replace filter
if
necessary. An Emission Control Service.
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
**
For Two-Wheel-Drive vehicles only: Clean
and repack the front wheel bearings (or at
each brake relining, whichever occurs first).
0 Change automatic transmission flr lid and
filter
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 higher.
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
[f you do not use your vehicle under my of
these conditions, change the fluid and filter every
30,000 miles (50 000 km).
7-9

30,000 Miles (50 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components; see
footnote
# (or every 3 months, whichever
occurs first).
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
**
0 For Two-Wheel-Drive vehicles only: Clean
and repack the front wheel bearings (or at
each brake relining, whichever occurs first).
0 Replace fuel filter.
An Emission Control Service.
0 Replace air cleaner filter.
0 Change automatic transmission fluid and
filter
if the vehicle is mainly driven under
one or more of these conditions:
- In heavy city traffic where the outside
temperature regularly reaches
90 OF
(32°C) or higher.
An Emission Control Service.
- In hilly or mountainous terrain.
Short TripKity Maintenance Schedule
7-12

I Short Trip/City Maintenance Schedule I
45,000 Miles (75 000 km) (Continued)
Change automatic transmission fluid and
filter
if the vehicle is mainly driven under
one or more of these conditions:
- In heavy city traffic where the outside
temperature regularly reaches
90 O F
(32°C) 'or higher.
- In hilly or mountainous terrain.
- ' When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
lfyou do not use your vehicle under any of these
conditions, change the fluid and filter every
30,000 miles (SO 000 km).
i
I.
,#-.
0 Inspect air cleaner filter if you are driving
in .dusty conditions. Replace filter if
necessary. An Emission Control Service.
DATE ACTUAL MILEAGE SERVICED BY: