
Scheduled Maintenance
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Short Trip/City Intervals -- Gasoline Engines
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Automatic
Transmission Service (normal conditions). 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 -- Gasoline Engines
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 Suburban
Page 6: ...yellowblue vi Model Reference This manual covers these models 4 Door Utility Suburban ...
Page 70: ...yellowblue 1 64 NOTES ...
Page 138: ...yellowblue 2 68 Instrument Panel ...
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Page 397: ...yellowblue 7 47 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED ...
Page 398: ...yellowblue 7 48 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED ...
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