[omnc449]

I'm getting the sputter also. I thought it may the turbo since the sound comes from the front. But now after reading this thread im thinking i'm the same as everyone else.
I get the shutter after having a light load on the engine in the winding hills and as soon as i get on somewhat level ground i sometimes get the shutter.

 

[omnc449]

No mods. All stock. I have larger than stock tires with a leveling kit. Its at the dealer now and they say there are no codes on the computer and want to drive it home tonight to see if than can duplicate the prob.

 

[omnc449]

and you were right!!!! They couldnt duplicate it but the did a TCM flash update. Its running fine right now but I'll test it out this weekend. Crossing my fingers!