What could this noise be???

[Ec22champ]

Recently purchased 2014 Silverado 1500 z71 and noticed this sound and cannot figure out what it is. Any ideas? 

 

Edited October 5, 2021 by Ec22champ

[Z45]

I wonder if it could be exhaust system components, maybe a tailpipe with a broken hanger?  Sounds like something loose touching frame or body??

[CrawlSlow]

Record another video with your guage, seems related to v4.

[Ec22champ]

@CrawlSlow thank you so much for your input. It definitely has to do with the v4. I kept it from going into v4 and no more noise! 

[pokismoki]

datalog the transmission, could be the TC shutter or another trans issue, what tranny you got?

 

try driving in M4 or M5 see if it goes away, if not hit towhaul  and leave in M5 mode. this might disable the tcc , M4 or M5 will shut off v4 mode manually

Edited October 7, 2021 by pokismoki

[jdm22]

Do you have an aftermarket or muffler delete on the truck? I know I had one that when the fuel management system kicked in it would sound like a helicopter rotor.