Car Bangs When Shifting Into Overdrive

My simple bet is the solenoid that does this "shifting" in the transmission is on it's way to failure. I'm thinking it isn't overdrive but the mechanical "lock-up" that occurs in these transmissions as a fuel savings effort.

It means a trip to the shop - and if you haven't had the transmission serviced it's way overdue anyway. I've used Cottman several times. If my bet is wrong, it's something more serious and means a shop trip anyway.

It sounds like a transmission problem.

SOUNDS LIKE IT COULD BE THE U JOINTS GOING OUT