Okay another 700R4 going?...Well really its called a 4L60E (I know a 700R4). Anyway the last 2 days I was driving down the road in Overdrive (I know don't do that!!) at about 45 Mph and its starts to shudder. I press the gas and it down shifts no more stutter. If I'm on the gas it runs fine but if I'm just moseying along its jerks. Today I was driving in Drive and shifted to OD (I know) and it CLUNKED..needless to say I went back to Drive. Well what do ya think..rebuild?? Only has 80,000 miles no hard 4X4ing although..I think??? it had a plow on it. Also no Tranny cooler. A buddy said MAYBE a solenoid went bad..sound familiar? Just dont want to hear that $1000.00 rebuild..neither does the wife around Xmas. THANKS!!