Flutter on cold start

[Morgasm11]

Every once in a while I notice a fluttering sound on a cold start, lasts around 5 seconds. Anyone else had this problem?

 

[Geno]

yep, on my 10 6.2 and now my 11 screw

 

[INI]

do you have a intake?
if so its the void in the start up air being stirred up.
happens anytime you have a mass air flow sensor trying to gauge airflow.

 

[Geno]

Does it every once in a while on both aftermarket and stock intakes.

 

[pirate air]

My 2010's done it off and on since day one. At this point I'd say its normal for the 6.2.

 

[Raptoyd11]

Same here, doesn't do it every time just once in a while. Wierd

 

[SilverBolt]

100% bone stock and does it here. I believe there is a TSB for a re-flash that is supposed to fix it.