Scheduled Maintenance
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7-6
Short Trip/City Intervals
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 first).
These intervals only summarize maintenance services.
Be sure to follow the complete scheduled maintenance
on the following pages.
Long Trip/Highway Definition
Follow this scheduled maintenance only if none of the
conditions from the Short Trip/City Scheduled
Maintenance is 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 causes engine oil to break
down slower.
Summary of Contents for 1999 Astro
Page 6: ...yellowblue vi Model Reference This manual covers these models Cargo Van Passenger Van...
Page 70: ...yellowblue 1 64 NOTES...
Page 126: ...yellowblue 2 56 Instrument Panel...
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Page 212: ...yellowblue 4 40 NOTES...
Page 238: ...yellowblue 5 26 Front Position Rear Position...
Page 246: ...yellowblue 5 34 NOTES...
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Page 366: ...yellowblue 7 50 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED...
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