Buzz sound from engine

[Carolina85]

2015 Silverado 5.3 sometimes at operating temp has a loud buzzing sound coming from driver side bottom of the engine. There are a few old post on here and one video that is my exact problem but there was no outcome of the problem 

[JimCost2014]

3 hours ago, Carolina85 said:

2015 Silverado 5.3 sometimes at operating temp has a loud buzzing sound coming from driver side bottom of the engine. There are a few old post on here and one video that is my exact problem but there was no outcome of the problem 

Welcome to the site.

 

Have you had your vacuum pump replaced?

 

 

[Carolina85]

No 

[JimCost2014]

2 hours ago, Carolina85 said:

No 

What was the problem that you are trying to describe from the old posts?