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

2 Answers

5,845

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

2 of 2 people found this helpful.

i have 1994 gmc truck it started to whistling noise i could not find it so i work on it more then i found it it was the gaskit in between valvlebody and intake

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