Page 238 of 372

When to Change Engine Oil
See if any one of these is true for you:
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.
The vehicle
is used for delivery service, police, taxi
or other commercial application.
Driving under these conditions causes engine oil to
break down sooner. If any one of these is true for your
vehicle, then you need to change your oil and filter
every
3,000 miles (5 000 km) or 3 months -- whichever
occurs first.
If none of them is true, change the oil and filter every
7,500 miles (1 2 SO0 km) or 12 months -- whichever
occurs first. Driving a vehicle
with a fully warnled
engine under highway conditions causes engine oil to
break down slower.
What to Do with Used Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer'? Don't let used oil stay on your skin
for very long. Clean your skin and nails with soap and
water, or a
good hand cleaner. Wash or properly throw
away clothing or rags containing used engine
oil. (See
the manufacturer's warnings about the use and disposal
of oil products.)
Used oil can be a real threat to the environment. If you
change your own
oil, be sure to drain all free-flowing oil
from the filter before disposal. Don't ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle
it by taking it to a place that collects used oil. If
you have a problem properly disposing of your used oil,
ask your dealer,
a service station or a local recycling
center for help.
6-14
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Page 240 of 372

Automatic Transmission Fluid
7 ’ ~ n 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 50,000 miles
(83 000 km) if the vehicle’s GVWR is over 8,600 or
if
the vehicle is mainly driven under one or more of
these conditions:
0 In heavy city traffic where the outside temperature
0 In hilly or mountainous terrain.
0 When doing frequent trailer towing.
regularly
reaches
90°F (32°C) or higher.
0 Uses such as found in taxi, police or delivery service.
If your vehicle’s GVWR is not over 8,600 and you do
not use your vehicle under any of these conditions, the
fluid and filter do not require changing.
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 your GM dealer
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.
NOTICE:
Too much or too little fluid can damage your
transmission.
Too much can mean that some of
the fluid could come out and fall on hot engine parts or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
ProCarManuals.com
Page 290 of 372
Cooling System Capacity
ENGINE VIN
“VORTEC” 4300 W
“VORTEC” SO00 M
“VORTEC” 5700 R
“VORTEC” 7400 J
QTY Without Rear Heater*
1 1 quarts ( 10.4 L)
17 quarts ( 16 L)
17 quarts (16 L)
23 quarts (2 1.8 L)
QTY With Rear Heater*
14 quarts (13.2 L)
20 quarts (18.9 L)
20 quarts (1 8.9 L)
26 quarts (24.6 L)
After refill, the level MUST be checked as outlined under “Engine Cooling System” in Section 5.
*All quantities are approximate.
Crankcase Capacity
ENGINE VIN
“VORTEC” 4300 W
“VORTEC” 5000 M
“VORTEC” 5700 R
“VORTEC” 7400 J
Quantity With Filter
4.5 quarts (4.3 L)
5 quarts (4.8 L)
5 quarts (4.8 L)
7 quarts (6.5 L)
All quantities are approximate.
After refill, the level
MUST be checked as outlined under “Engine Oil And Filter Recommendations” in Section 5.
*Add an aS;lditis.ad quart (1 L) for RPO 5ZI and RPO KL5 Models.
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Page 291 of 372
Fuel Tank Capacity
TYPE
Standard Tank
Cutaway Standard Tdnk
Cutaway Optional Tank
All quantities are approximate.
QUANTITY
3 I gallons (I 17.3 L)
35 gallons (132 L)
55 gallons (208.2 L)
Normal Rc --' :ermt Parts
Engine "VORTEC" 4300
VIN W
Oil Filter PFS2
Air Cleaner Filter'l'
A9 17C
PCV Valve CV789C
Spark Plugs
4 1-932
Fuel Filter GF48 1
Radiator Cap RC36 VORTEC"
5000
M
PF1218
A9 17C
cv774c
4 1-932
CF48
1
RC36
'"For severe dusty conditions, use AC Air Filter, Part No. 1236C. "VORTEC"
5700 "VORTEC" 7400
R J
PF1218
PF1218
A9 17C A917C
cv774c cv774c
4 1-932 4 1-932
GF48
1 GF48 I
RC36 RC36
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Page 300 of 372

Maintenance Schedule
Short TripKity Definition -- Gasoline Engines i
Follow the Short Trip/City Maintenance Schedule if any
one of these conditions is true for your vehicle:
0
0
0
0
0
e
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 j.
Most trips are through dusty areas.
You frequently tow
a trailer or use a carrier on top of
your vehicle.
You frequently tow
a trailer or us-e a carrier on top of
your vehicle. (With some models, you should never
tow
a trailer. See “Towing a Trailer” in the Index.)
If the vehicle is used for delivery service, police, taxi
or other commercial application.
Short Trip/City Intervals -- Gasoline Engines
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 first).
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. Shields and
Underhood Insulation Inspection (GVWR above
8,500 Ibs. only). Thermostatically Controlled Engine
Cooling Fan Check (or every
12 months, whichever
occurs first). Front Wheel Bearing Repack (or at each
brake relining, whichever occurs first).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (vehicles over
8600 GVWR
or driven under severe conditions only).
7-4
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Page 302 of 372

Maintenance Schedule
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (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): Shields and
Underhood Insulation Inspection (GVWR above
8,500 lbs. only). Thermostatically Controlled Engine
Cooling Fan Check
(or every 12 months, whichever
occurs first).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement. Air Cleaner Filter Replacement.
Front Wheel Bearing Repack (or at each brake
relining, whichever occurs first).
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (vehicles over
8600 GVWR or
driven under severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel
Tank, Cap and Lines
Inspection. Exhaust Gas Recirculation System
Inspection. Evaporative Control System Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or every
60 months, whichever occurs fist).
Spark Plug Wire Inspection. Spark
Plug Replacement.
Positive Crankcase Ventilation (PCV) Valve Inspection.
These intervals only sumnarize maintenance services.
Be sure to follow the complete maintenance schedule on
the.following pnges.
7-6
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Page 304 of 372
I Short TripKity Maintenance Schedule -- Gasoline Engines I
3,000 Miles (5 000 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).
as needed. **
CI Check axle fluid level and add fluid
DATE ACTUAL MILEAGE SERVICED BY
6,000 Miles (10 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Servic-e.
0 Lubricate chassis components; see footnote ##
(or every 3 months, whichever occurs first).
0 Check axle fluid level and add fluid
as needed. **
0 Rotate tires. See “Tire Inspection and
Rotation” in the Index for proper rotation
pattern and additional information. During
tire rotation, check brake calipers for
freedom
of movement. Refer to the
appropriate
GM service manual for proper
caliper service procedures.
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Page 305 of 372
I Short TripKity Maintenance Schedule -- Gasoline Engines I
9,000 Miles (15 000 ks:)
CI Change engine oil and filter (or every
3 months, whichever occurs first).
0 Lubricate chassis components; see
AH Emission Control Service.
footnote # (or every 3 months, whichever
occurs first).
as needed. :$*
0 Check axle fluid level and add fluid
DATE ACTUAL MILEAGE
SERVICED BY: I
12,000 Miles (20 000 km)
Change engine oil and filter (or every
3 months, whichever occurs first).
I7 Lubricate chassis components; see
An Emission Control Service.
footnote # (or every 3 months, whichever
occurs first).
0 Check axle fluid level and add fluid
as needed :%:I:
DATE
SERVICED BY ACTUAL MILEAGE
7-9
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