smitty67

I've got an 07 vmax with a ghost in my trans. occasionally when I launch hard the 1/2 shift hangs up, the speedo bails out, then I've got neutral until I come to a complete stop after that everything is back to normal .I've been trying to narrow down what triggers this 3rd or OD same result. If I leave it in 3rd when it bails and throttle up it will move at 5000rpm but still no speedo and lots of slippage no noticable change in trans temp.between 140-186. It happens anytime now and getting worse . Dealer says no codes "bring it back in a box" any suggestions?