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Chevrolet
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1986
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Forward Control 7.4 W, Automatic, 400/M40
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Repair and Diagnosis
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Engine Performance
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Adjustment
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Tune-Up - Diesel
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Specifications
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Service Intervals
Service Intervals
REPLACEMENT INTERVALS
Component
Interval (Miles)
Air Cleaner Element
30,000
Auto. Trans. Filter (Heavy Use)
15,000
EGR Pressure Valve
(1)
15,000
Fuel Filter
15,000
Oil Filter
Heavy Use
2500
Normal Use
5000
(1)
Check every 5000 miles.