2014 chevy Silverado loud engine noise when first starting up

[Dion Greenlaw]

Just purchased certified 2014 Silverado loud engine noise sounds like some kind of pump when first starting engine

[newdude]

Is it like a Rrrrr for a couple seconds?

[Super sierra]

My 2016 gmc does the same thing. Like a decently high pitch rarrrr

[Daryl Z71]

*Moved to correct section*

[rickytickyshorth]

Air in the oil pump. Normal.

 

Sent from my SM-G930R4 using Tapatalk

[07Softail]

DI pump

 

RT

[15_silverado]

Just purchased certified 2014 Silverado loud engine noise sounds like some kind of pump when first starting engine

 

Today, 11:01 PM

Is it like a "rasp" noise for just a second upon startup up?

 

If so GM says that's normal; it's air that had entered the oil pump from normal drain back.

 

They say that's normal, and won't hurt anything, but we shall see in the long run if people start having oil pump isues, hopefully all will be fine, fingers crossed.

 

http://sandyblogs.com/techlink/?p=3134

 

http://www.gm-trucks...rt-noise/page-2

[Donstar]

Welcome! The suggestions here are useful but what did your dealer say? You just bought a "certified" vehicle and there should be some sort of guarantee/warranty.