I was reading somewhere here about a shudder ( bucking ) problem going up hills, which is what I was experiencing as well. FIXED IT!! All that I had to do was to change the tranny filter! I had replaced the tiny stock filter with the Perma Cool unit that is 3x larger than the crappy stock filter and had a 50,000 mile filter life. After 25,000 miles the tranny started shudder and buck going up hills and run @210 degrees on the freeway at 70 mph. Changed the filter and it climbs hills (torque converter in lock up mode) without bucking and the temps have dropped to less than 180 degrees at 70 mph.
I am so happy now
Matt K.