my 06 GS300 started shifting kind of rough and when coming to a stop it would downshift from 3rd to 1st (skipping 2nd) causing a harsh thump as if the car just got rear ended. also the overdrive would kick in late when the accelerator is pressed hard. Took it to the Lexus stealearship' and they said it needed a $6500 transmission, saying the computer inside the tranny went bad. so my extended warranty company covered the cost and now the car is still shifting the same!! now they're saying it is the ECU, which is about another $2000! My warranty company is gonna flip when they hear this! They will probably not even cover it knowing they just wasted money in a part thats was not even the problem. Anyone with similar problems or any suggestions??
THanks