06 G35x Sedan Auto --What causes a 3rd gear bang ?

[alaninfiniti]

I have noticed when I am under heavy throttle and manually shifting through the gears every gear is smooth except 3rd... it bangs.

Any thoughts ???

Using mostly premium gas, letting car warm up properly, seems to be located around the trans area below the shifter or lower...

[jibnasty]

myne does it in second...a little bit in third, too.I guess using the hard shifting formulas at any kragen works, but there isnt any transmission inlets under the hood.

[jimmy4645]

I have a 06 sedan and mine does the same when i switch into third gear..

[G_whizz]

I have an 05' and mine has never made a BANG when I'm kick'n it through the gears....have any of you spoken to your dealer about this???