2005 CHEVROLET ASTRO CARGO VAN cooling

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Maintenance Requirements..............................6-2
Your Vehicle and the Environment....................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using the Maintenance Schedule......................6-4
Selecting the Right Schedule...........................6-5
Short Trip/City Scheduled Maintenance..............6-6
Long Trip/Highway Scheduled Maintenance......6-16
Part B: Owner Checks and Services................6-24
At Each Fuel Fill..........................................6-24
At Least Once a Month.................................6-24
At Least Twice a Year...................................6-24At Least Once a Year...................................6-25
Part C: Periodic Maintenance Inspections.........6-28
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection............................6-28
Exhaust System Inspection............................6-28
Fuel System Inspection..................................6-28
Engine Cooling System Inspection...................6-28
Throttle System Inspection.............................6-29
Transfer Case and Front Axle (All-Wheel
Drive) Inspection.......................................6-29
Brake System Inspection................................6-29
Part D: Recommended Fluids and Lubricants. . . .6-29
Part E: Maintenance Record...........................6-31
Section 6 Maintenance Schedule
6-1

Selecting the Right Schedule
First you will need to decide which of the two schedules
is right for your vehicle. Here is how to decide which
schedule to follow:
Short Trip/City Denition
Follow the Short Trip/City Scheduled Maintenance if any
one of these conditions is true for your vehicle:
Most trips are less than 5 miles (8 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.
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 you should follow this schedule if
you operate your vehicle under any of these conditions
is that these conditions cause engine oil to break
down sooner.
Short Trip/City Intervals
Every 3,000 Miles (5 000 km):Engine Oil and Filter
Change (or 3 months, whichever occurs rst). Chassis
Lubrication (or 3 months, whichever occurs rst).
Every 6,000 Miles (10 000 km):Tire Rotation.
Every 15,000 Miles (25 000 km):Engine Air Cleaner
Filter Inspection. Front Wheel Bearing Repack
(two–wheel drive only) (or at each brake relining,
whichever occurs rst). Automatic Transmission Service
(severe conditions only).
Every 30,000 Miles (50 000 km):Fuel Filter
Replacement.
Every 45,000 Miles (75 000 km):Engine Air Cleaner
Filter Replacement.
Every 50,000 Miles (83 000 km):Automatic
Transmission Service (normal conditions). Transfer
Case Fluid Change.
Every 100,000 Miles (166 000 km):Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150 000 Miles (240 000 km):Cooling System
Service (or every 60 months, whichever occurs
rst). Engine Accessory Drive Belt Inspection.
6-5

These intervals only summarize maintenance services.
Be sure to follow the complete scheduled maintenance
on the following pages.
Long Trip/Highway Denition
Follow this scheduled maintenance only if none of the
conditions from the Short Trip/City Scheduled
Maintenance are true. Do not use this schedule if the
vehicle is used for trailer towing, driven in a dusty area,
or used off paved roads. Use the Short Trip/City
schedule for these conditions.
Driving a vehicle with a fully warmed engine under
highway conditions will cause engine oil to break down
slower.
Long Trip/Highway Intervals
Every 7,500 Miles (12 500 km):Engine Oil and Filter
Change (or every 12 months, whichever occurs
rst). Chassis Lubrication (or 12 months, whichever
occurs rst). Tire Rotation.
Every 15,000 Miles (25 000 km):Engine Air Cleaner
Filter Inspection. Automatic Transmission Service
(severe conditions only).
Every 30,000 Miles (50 000 km):Fuel Filter
Replacement. Front Wheel Bearing Repack (two–wheel
drive only) (or at each brake relining, whichever
occurs rst).Every 45,000 Miles (75 000 km):Engine Air Cleaner
Filter Replacement.
Every 50,000 Miles (83 000 km):Automatic
Transmission Service (normal conditions). Transfer
Case Fluid Change.
Every 100,000 Miles (166 000 km):Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km):Cooling System
Service (or every 60 months, whichever occurs
rst). Engine Accessory Drive Belt Inspection.
These intervals only summarize maintenance services.
Be sure to follow the complete scheduled maintenance
on the following pages.Short Trip/City Scheduled
Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of this
vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of this
vehicle.
6-6

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 5-63for 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).
This service can be complex; you should have
your dealer perform this service. SeeEngine Coolant
on page 5-25for 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. Visually inspect
belt for fraying, excessive cracks, or obvious
damage. Replace belt if necessary.An Emission
Control Service.
6-15

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).
This service can be complex; you should have
your dealer perform this service. SeeEngine Coolant
on page 5-25for 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. Visually inspect
belt for fraying, excessive cracks, or obvious
damage. Replace belt if necessary.An Emission
Control Service.
6-23

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 7-11.
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 2-26.
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.
6-28

Check
Engine Light...............................................3-31
Gages Warning Light...................................3-36
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-89
Child Restraints
Child Restraint Systems...............................1-42
Infants and Young Children...........................1-36
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-50
Older Children.............................................1-33
Securing a Child Restraint Designed for the
LATCH System........................................1-52
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-55
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-53
Securing a Child Restraint in the Right Front
Seat Position...........................................1-57
Top Strap...................................................1-46
Top Strap Anchor Location............................1-48
Where to Put the Restraint...........................1-45
Cigarette Lighter.............................................3-18
Cleaning
Aluminum Wheels........................................5-88
Exterior Lamps/Lenses.................................5-86
Fabric/Carpet..............................................5-84
Finish Care.................................................5-87
Inside of Your Vehicle..................................5-83Cleaning (cont.)
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-85
Leather......................................................5-85
Tires..........................................................5-88
Underbody Maintenance...............................5-89
Washing Your Vehicle...................................5-86
Weatherstrips..............................................5-86
Windshield and Wiper Blades........................5-87
Climate Control System...................................3-19
Outlet Adjustment........................................3-21
Rear Air Conditioning System........................3-22
Rear Heating System...................................3-22
Comfort Guides, Rear Safety Belt.....................1-31
Compact Spare Tire........................................5-82
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-38
Coolant
Engine Temperature Gage............................3-30
Heater, Engine............................................2-19
Cooling System..............................................5-30
Cruise Control................................................3-11
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
3

Customer Assistance Information (cont.)
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the
Canadian Government..............................7-10
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Doing Your Own Service Work........................... 5-4
Dome Lamps.................................................3-17
Door
Locks.......................................................... 2-6
Power Door Locks......................................... 2-7
Programmable Automatic Door Locks............... 2-7
Rear Doors.................................................2-11
Sliding Side Door.......................................... 2-8
Driver
Position, Safety Belt.....................................1-19
Driver Information Center (DIC).........................3-38
Driving
At Night.....................................................4-13
City...........................................................4-18
Defensive..................................................... 4-2
Drunken....................................................... 4-2Driving (cont.)
Freeway.....................................................4-19
Hill and Mountain Roads..............................4-21
In Rain and on Wet Roads...........................4-15
Rocking Your Vehicle to Get it Out.................4-28
Winter........................................................4-23
E
Electrical System
Add-On Equipment......................................5-92
Fuses and Circuit Breakers...........................5-93
Headlamp Wiring.........................................5-92
Instrument Panel Fuse Block.........................5-93
Power Windows and Other Power Options......5-92
Underhood Fuse Block.................................5-96
Windshield Wiper Fuses...............................5-92
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-40
Check and Service Engine Soon Light............3-31
Coolant......................................................5-25
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-30
Cooling System Inspection............................6-28
Cover........................................................5-17
Engine Compartment Overview......................5-12
Exhaust.....................................................2-26
Fan Noise..................................................5-34
4