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Home >> Chevrolet >> 1990 >> Step Van 3.9 L >> Repair and Diagnosis >> Transmission >> Manual Trans >> Servicing - M/T >> Lubrication >> Service Intervals >> Notes
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Service Intervals: Notes

NOTE: There are 2 light duty truck emission control classifications: Light Duty (up to 8500 lbs. Gross Vehicle Weight) and Heavy Duty (vehicles more than 8500 lbs. GVW).
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