i've read the threads with people dealing with transmission slippage on the g37x, but my 2011 g37x had transmission slippage, over heated, and started leaking coolant freeze. i got it towed into a repair shop, and he is telling me he has to replace the pcm ( i hope he meant TCM) because the coolant leaked into it because of the design flaw of the nissan transmission....has anybody gone through this problem and can validate this?