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99 Yukon whistle when it gets hot, wtf is it?
I just replaced spider injectors with updated, and repaired ac, now when the engine gets hot and no load it whistles sounds exactly like a bearing or squeaky pully so I removed belt and inspected. During test drive under a load it goes away when you turn the engine off you can hear the vacuum...- ocdismex
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- Forum: Engine & Drivetrain
