Thanks KKX5, my original thought was the Torque Converter too, however the transmission repair shop, who do a lot of work on the ZFs, couldn't find any real problems with it. It worked perfectly fine sitting around 1200rpm on a very steep hill under load. In that situation, there was no shuddering ...

After traipsing through many threads on transmission and/or transfer case issues I couldn't find something that fully matched up with my issues so I thought I would start a new thread. I have the E53 diesel with ZF 6 speed. My issue: Under medium to hard acceleration (through the lower gears ...