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GMC Workshop Service and Repair Manuals

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Crankcase Ventilation System - Revised Maintenance|Page 4096 > < Crankcase Ventilation System - Revised Maintenance|Page 4094

Yukon 4WD V8-393 6.5L DSL Turbo VIN S (1995)

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in the crankcase. As the intake vacuum decreases, the spring pushes the diaphragm away from the top of the outlet tube to prevent the crankcase
pressure from going positive.

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