2011 v6 automatic drivetrain chatters on acceleration. New r axle made it worse.
I had this problem under warrantee and the dealer replaced the r axle and it cured the issue. Since then the car has new lowering springs (1.5") and new stiffer shocks. The r axle was replaced last week and the chatter is worse. Gets worse during hard acceleration. With no load on the engine etc. it goes away. Any help here would be great.

 

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It may be stupid, but this has happened to me. Check your lug nuts. I had my CV axle replaced in my car, and then a week later I had a hell of a vibration and chatter coming from the same wheel. Ended up that my lug nuts came loose causing the wheel to chatter and shake.