Engine making whining/whistling noise from TBI or EGR valve.


Asked by Feb 16, 2016 at 09:14 PM about the 1993 GMC Suburban K1500 4WD

Question type: Maintenance & Repair

1 Answer


Is your check engine light on? generally a vacuum leak will trigger a DTC. Whining noises are also common with bearings such as idler pulleys and other front engine components

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