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2017 5.3L Engine noise

15_silverado
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15_silverado Enthusiast

15_silverado

Posted
Posted (edited)

Please watch/listen to this video. This is not my video, but my truck is making the exact same noise as the one in this video.

 

Please read the video discription, it is the exact same thing as mine, starts loudest at cold start, then fades away, but not totally away in mine.

 

I haven't really checked it out yet, just wondering if any of you have already come across this particular noise, as it is a very distinct noise. Kinda sounds like an old grandfather clock tick/tocking. Thanks.

 

 

Edited by 15_silverado
ShamrockShooter Senior Enthusiast

ShamrockShooter

Posted
Posted

My 16 5.3 makes the same noise. I was just wondering the other day what that was as I don't remember hearing it over the first 10k miles.

 

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Bikemobile Enthusiast

Bikemobile

Posted
Posted

The chatter noise is the direct injection. That metallic clank sound is probably something in the belts. It sounds like it happens once per revolution of the accessory drive system.

2strokesmoke Enthusiast

2strokesmoke

Posted
Posted

Valve lifter knock or injector, this will occur until valve lifters fill with oil, as they leak down when engine is at a 4hr cold soak. They fill within 30 seconds of running, but sometimes if there was traped air oil "foaming" they can make a knocking noise for closer to a minute.

 

It sounds like an engine rotational sound, it could be the tensioner pulley?

 

Listen at the front of engine with a hose, then the valve cover to close in on the sound. Do it when the engine sat cold for 4hrs though.

 

 

Thxs

15_silverado Enthusiast

15_silverado

Posted
  • Author
Posted

I really don't think it's anything to do with the lifters or valve train. And it's not a normal DI sounds. It sounds like an accessory to me, most likely the vacuum pump. I just haven't had a chance to check it out yet, I'll put a mechanics stethoscope on it to narrow down where it's coming from.

 

It's a distinct sound, that's why I was wondering if anyone had this.

 

Thanks all.

15_silverado Enthusiast

15_silverado

Posted
  • Author
Posted

My 16 5.3 makes the same noise. I was just wondering the other day what that was as I don't remember hearing it over the first 10k miles.

 

Sent from my SM-G930V using Tapatalk

If you go to the dealer for this, or figure out what it is, please let me know.

 

Thank you.

ShamrockShooter Senior Enthusiast

ShamrockShooter

Posted
Posted (edited)

If you go to the dealer for this, or figure out what it is, please let me know.

 

Thank you.

I've been to the dealer over 20 times in 9 months for this truck. If I come in and tell them I hear another noise they will tell me I am crazy. I noticed it this morning when it was cold start, but didn't hear it once it warmed up. It is a distinct noise with a pulse about once every 1/2 second. I would think it was just normal if it had always made this noise.

 

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Edited by ShamrockShooter
15_silverado Enthusiast

15_silverado

Posted
  • Author
Posted (edited)

 

I've been to the dealer over 20 times in 9 months for this truck. If I come in and tell them I hear another noise they will tell me I am crazy. I noticed it this morning when it was cold start, but didn't hear it once it warmed up. It is a distinct noise with a pulse about once every 1/2 second. I would think it was just normal if it had always made this noise.

 

Sent from my SM-G930V using Tapatalk

I hear you. I got a mechanics stethoscope coming, I'll poke around with it to narrow down where it's coming from. I'll let you know, but it may be a while.

 

It's probably not serious, but it can't be normal because not many other trucks make this same sound, or more people would have commented on this, it seems we're just lucky!

Edited by 15_silverado
15_silverado Enthusiast

15_silverado

Posted
  • Author
Posted

Oh, and the guy that originally made the video hasn't answered any comments/questions on it, so I don't know if he ever figured it out.

ShamrockShooter Senior Enthusiast

ShamrockShooter

Posted
Posted

Oh, and the guy that originally made the video hasn't answered any comments/questions on it, so I don't know if he ever figured it out.

Lucky? Sure. I guess that is one way to look at it... lol.

 

I first heard it when I was checking for exhaust leaks from my new exhaust. Sounded real loud when your head is under the truck near the front of the exhaust.

 

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  • 1 month later...
deputy Enthusiast

deputy

Posted
Posted

I had the same noise(squeak chirp) on my 2016.

After numerous attempts this is what my dealership found. And it fixed it.

post-132382-0-80510600-1497017731_thumb.jpg

post-132382-0-80510600-1497017731_thumb.jpg

post-132382-0-80510600-1497017731_thumb.jpg

post-132382-0-80510600-1497017731_thumb.jpg

  • 1 year later...
haider320 Enthusiast

haider320

Posted
Posted

I know this is an old thread, but has anybody determined what this sound is? My 18 makes the same sound.  

300 Blackout Enthusiast

300 Blackout

Posted
Posted
I know this is an old thread, but has anybody determined what this sound is? My 18 makes the same sound.  

[mention=126037]Haider320[/mention] I was just going to send you a message to make sure you saw the video in the first post. It certainly sounds like what you were describing by a blinker type noise. The post above yours says they replaced the high pressure fuel pump and it fixed the issue for another member who was experiencing the same noise.
haider320 Enthusiast

haider320

Posted
Posted (edited)
7 hours ago, 300 Blackout said:
10 hours ago, haider320 said:
I know this is an old thread, but has anybody determined what this sound is? My 18 makes the same sound.  

 

[mention=126037]Haider320[/mention] I was just going to send you a message to make sure you saw the video in the first post. It certainly sounds like what you were describing by a blinker type noise. The post above yours says they replaced the high pressure fuel pump and it fixed the issue for another member who was experiencing the same noise.

Yes, thanks.  I just read that.  On the YouTube link, there are several guys saying they have the same sound. Either GM has some faulty fuel pumps, or some of them just sound like that. My best friend has an 18 and he says his makes the same sound like mine.  Kinda like the vibration issue.  Some have it, some don't. 

Edited by haider320

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