2004 CHEVROLET ASTRO CARGO VAN radiator cap

❑Replace fuel lter.An Emission Control Service.
(See footnote †.)
❑Replace engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-21for more information.
An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +.)
93,000 Miles (155 000 km)
❑Change engine oil and lter (or every 3 months,
whichever occurs rst).An Emission Control Service.
❑Lubricate chassis components (or every 3 months,
whichever occurs rst).(See footnote #.)
96,000 Miles (160 000 km)
❑Change engine oil and lter (or every 3 months,
whichever occurs rst).An Emission Control Service.
❑Lubricate chassis components (or every 3 months,
whichever occurs rst).(See footnote #.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +.)
99,000 Miles (165 000 km)
❑Change engine oil and lter (or every 3 months,
whichever occurs rst).An Emission Control Service.
❑Lubricate chassis components (or every 3 months,
whichever occurs rst).(See footnote #.)
100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission
Control Service.
❑Replace spark plugs.An Emission Control Service.
❑If you have not used your vehicle under severe
service conditions listed previously and, therefore,
have not changed your automatic transmission
uid, change both the uid and lter.
❑Change transfer case uid.
❑Inspect Positive Crankcase Ventilation (PCV) valve.
An Emission Control Service.
150,000 Miles (240 000 km)
❑Drain, ush and rell cooling system (or every
60 months since last service, whichever occurs rst).
SeeEngine Coolant on page 5-26for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test cooling system and
pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.
An Emission Control Service.
6-15

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 uid and lter every
50,000 miles (83 000 km).
❑Replace fuel lter.An Emission Control Service.
(See footnote †).
❑Replace engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-21for more information.
An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +).
97,500 Miles (162 500 km)
❑Change engine oil and lter (or every
12 months, whichever occurs rst).
An Emission Control Service.
❑Lubricate chassis components (or every 12 months,
whichever occurs rst).(See footnote #).
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-71for proper rotation pattern and additional
information.(See footnote +).
100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission
Control Service.
❑Replace spark plugs.An Emission Control Service.
❑If you have not used your vehicle under severe
service conditions listed previously and, therefore,
have not changed your automatic transmission uid,
change both the uid and lter.
❑Change transfer case uid.
❑Inspect Positive Crankcase Ventilation (PCV) valve.
An Emission Control Service.
150,000 Miles (240 000 km)
❑Drain, ush and rell cooling system (or every
60 months since last service, whichever occurs rst).
SeeEngine Coolant on page 5-26for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.
An Emission Control Service.
6-21

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).You should let your dealer’s
service department do these jobs. Make sure any
necessary repairs are completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-12.
Steering, Suspension and Front
Drive Axle Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chang, etc. Clean and then inspect the
drive axle boot seals for damage, tears or leakage.
Replace seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the oor pan or could let
exhaust fumes into the vehicle. SeeEngine Exhaust
on page 2-29.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
6-26

Power
Accessory Outlets........................................3-15
Door Locks.................................................. 2-8
Electrical System.......................................5-100
Seat............................................................ 1-3
Steering Fluid.............................................5-38
Windows....................................................2-16
Power Steering................................................ 4-9
Programmable Automatic Door Locks.................. 2-8
Programming the HomeLink
®Transmitter...........2-33
Q
Questions and Answers About Safety Belts.........1-17
R
Radiator Pressure Cap....................................5-28
Radios..........................................................3-35
AM-FM Radio.............................................3-36
Care of Your CD Player...............................3-47
Care of Your CDs........................................3-47
Radio with CD............................................3-38
Rear Seat Audio..........................................3-43Radios (cont.)
Setting the Time for Radios with
HR and MN Buttons.................................3-36
Setting the Time for Radios with
the Set Button.........................................3-36
Theft-Deterrent............................................3-44
Understanding Reception..............................3-47
Reading Lamps..............................................2-38
Rear Air Conditioning System...........................3-20
Rear Axle......................................................5-51
Locking........................................................ 4-8
Rear Doors....................................................2-12
Rear Heating System......................................3-20
Rear Safety Belt Comfort Guides......................1-32
Rear Seat Audio (RSA)....................................3-43
Rear Seat Operation......................................... 1-7
Rear Seat Outside Passenger Positions.............1-29
Rear Seat Passengers, Safety Belts..................1-29
Rear Window Defogger....................................3-18
Rearview Mirrors.............................................2-31
Reclining Seatbacks.......................................... 1-4
Recreational Vehicle Towing.............................4-29
Reinstalling the Engine Cover...........................5-21
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
11