(2016 Silverado) Faint fluttering noise in the motor during accelerati

[bigbosschevyman16]

So I have a 2016 Chevy Silverado Z71 LT. I have a little under 5700 miles on it and have had it for 3 weeks. I loove this truck and especially when i first got it. But right now not so much! So anyways, I will be driving per usual, and its kind of random when it happens but once it starts it does not stop. So whenever i accelerate there is this faint fluttering noise that comes from the motor especially when i put it to the floor. The noise can be kind of described as a card stuck in some bicycle spokes maybe? I don't know, i have taken it to two different dealerships (chevy) and have driven around with some service guys and both have told me that this is a normal sound. For some reason I just cannot stomach that. So i went back and test drove another 2016 and it didn't make the noise at all so there is no way its "normal". Please if anyone can help let me know. Also I have read online that maybe its a U joint, Direct Injector or lifters? I don't know but any info will be great!

Edited July 19, 2016 by bigbosschevyman16

[Dodgersfan]

What does service guy say when you tell him the other trucks on lot don't make that sound?

[Beagleguy]

Hello,

 

I have a 2018 GMC Denali 6.2 that is a month and a half old, 2000 miles.  Since new it pulsates or flutters under mid take off.  It seems to me a fuel management or torque converter program issue???  It just does not have a smooth pull as other vehicles do.  The dealer has no answers since it does not throw a code but it is obviously there.  Runs the same on 91 and/or 87 octane, literally no difference.  Love the truck other than the acceleration issue, Any Suggestions Please? 

[Kpels]

What ended up to be the problem? I have the same issue and GM has no idea. ! 

Edited July 21, 2021 by Kpels