Noise when starting 2016 5.3 6 speed

[nluchau]

When the temps get a little cooler this noise when starting is more noticable. You can hear it at the link. It's not the noise after it starts, it's during the cranking. It sounds like something squeaking. Anyone got any ideas? I have 28k miles. Link: https://drive.google.com/file/d/1GHoOHmix49UI0-qSNMnlSh2CrErCEeOw/view?usp=drivesdk

 

Sent from my SM-G950U using Tapatalk

 

 

[L83_Z71]

Sounds like a belt to me. Have you checked tension on everything?

[nluchau]

Sounds like a belt to me. Have you checked tension on everything?

Thanks for the reply! No I haven't. I don't even know the first thing to check. Thinking I may schedule an appt with the dealer. I'm still under the bumper to bumper.

Sent from my SM-G950U using Tapatalk

[nluchau]

Truck is at dealer now for issue.  I had a service writer listen to the noise I posted above.  

[nluchau]

Service writer called and said they pulled the belts off and everything is tight and they can't find a source of the noise.  She said its quite common it makes this noise and on another like vehicle in their lot.  I have yet to hear that myself.  She is claiming the noise is from the fuel pressure building.  I am not buying this answer at all.  I told her to show me a TSB or some sort of documentation where it says this is a normal characteristic.  She only brought up there is one for the extended cranking (which I know about).  I am calling bull butter on this being normal.  

 

Thoughts?!?!