Chevrolet 1998 Tracker Owner's Manual page 347

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Maintenance Schedule
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90,000 Miles (150 000 km) (Continued)
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Drain, flush and refill cooling system (or every 30 months, whichever occurs
first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean
radiator, condenser, pressure cap and neck. Pressure test the cooling system
and pressure cap.
An Emission Control Service. (See footnote?.)
Replace spark plugs.
An Emission Control Service.
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines and any hoses for damage or leaks. Replace
fuel tank cap gasket.
An Emission Control Service. (See footnote
?.)
Change manual transmission fluid.
Change transfer case fluid.
Change differential fluid.
Replace fuel filter (or every 30 months, whichever occurs first).
An Emission Control Service. (See footnote?.)
Inspect the locking front hubs (if equipped) for correct operation (or every
3
months, whichever occurs first). Repair or replace
if
necessary.
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