Bad torque converter?

Hey guys, torque converter question for you all. I searched and I found out about the shuddering associated with a bad converter, which I'm experiencing, but there's something else happening that I can't find any information on. I'll try my best to explain. I have an 09 V6 auto and when accelerating, the transmission will shift as it should, but the engine RPMs don't change past 3rd gear. Allow me to clarify, the tachometer indicates a change in RPMs like it has shifted, but the engine noise under the hood doesn't, it just keeps revving higher without "shifting." I've taken it up to 65 and the engine noise keeps climbing. Does anybody have any clue if that's related to the torque converter as well or if it's something else? Thanks

-Ryan

 

If the RPM's don't change, I'm not sure the transmission is "shifting as it should". Could be a bad shift solenoid. Your ECU may think its shifting but its not. But I'm just pulling this out of my but from my limited understanding of how these transmissions work.

Unless the clutches are worn down and slipping heavily, causing your engine speeds to stay high, I don't think you're shifting gears. If the clutches are slipping like that, stop driving your truck until you rebuild the transmission. Otherwise you'll overheat and shear the fluid, causing a loss of protection and lubrication and the rest of your transmission will begin to fail.