change wheel CHEVROLET ASTRO 1996 User Guide

Tire Inspection and Rotation
Tires should be inspected every 6,000 to 8,000 miles
(10 000 to 13 000 km) for any signs of unusual wear.
If unusual wear is present, rotate your tires as soon as
possible and check wheel alignment. Also check for
damaged tires or wheels. See “When It’s Time for New
Tires” and “Wheel Replacement” later in this section for
more information.
The purpose of regular rotation
is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services” in the Index for scheduled
rotation intervals. When
rotating your tires, always use the correct rotation
pattern shown here.
Don’t include the compact spare tire in your tire rotation. \
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the
CertificatiodTire label. Make certain that all wheel nuts
are properly tightened. See “Wheel
Nut Torque” in
the Index.
’ A CAUTIO1
Rust or dirt on a wheel, or on the parts to which
it
is fastened, can make wheel nuts become loose
after a time. The wheel could come
off and cause
an accident. When you change a wheel, remove
any rust or dirt from places where the wheel
attaches to the vehicle. In an emergency, you can
use a cloth or a paper towel to do this; but be
sure to use a scraper or wire brush later,
if you
need to, to get all the rust or dirt
off. (See
“Changing
a Flat Tire” in the Index.)

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

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
42,000 Miles (70 000 km)
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).
Check readfront axle fluid level and add, fluid
as needed. Check constant velocity joints and
axle seals for leaking.
**
0 Rotate tires, See ‘Tire Inspection and Rotation”
I. - .: . in the Index for proper rotation pattern and
’,_ ,,4. 1 ’ additional information. During tire rotation,
check brake calipers for fieedom of movement.-
Refer
to the appropriate GM service manual for
proper caliper service procedures.
I
ACTUAL MILEAGE SERVICED BY:
45,000 Miles (75 000 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 reliningj whichever occurs first).
(Continued)
.. . .- - 7-15 ,,

I Short TripJCity Maintenance Schedule I
60,000 Miles (100 000 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 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).
Change a1 ltomatic transmission fl .uid 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.
If you do not use your vehicle under any of
these conditions, change the fluid and filter every
30,000 miles (50 000 km).
(Continued)
7-19

Short TripKity Maintenance Schedule
72,000 Miles (120 000 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.
**
I DATE I ACTUAL MILEAGE SERVICED BYI
75,000 Miles (125 000 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 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 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 O C) or higher.
- In hilly or mountainous terrain.
7-22

1
w
Short. TripKity Maintenance Schedule
87,000 Miles (145 000 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.
**
6
ACTUAL MILEAGE SERVICED BY:
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first). 8,
An Emission Control Sewice.
0 Lubricate chassis componenis; 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 leaki,ng.
**
0 For Two-Wheel-Drive vehicles only: Clean
and repack the front wheel bearings (or at
each brake relining, whichever occurs first).
(Continued)
7-25
6'
'i

I Long Tripmighway Maintenance Schedule
30,000 Miles (50 000 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components; see
footnote
# (or every 12 months, whichever
occurs first).
0 Chekk 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 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.
- 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 andfilter every
30,000 miles (50 000 km).
0 Replace fuel filter.
0 Replace air cleaner filter.
An Emission Control Service.
An Emission Control Service.
I DATE ACTUAL MILEAGE SERVICED BY:
7-32