I'm trying to troubleshoot my 700. History on the tranny: rebuilt twice in the past 70k miles. Once by a shady local shop and the 2nd time by Mr. Transmission. It seems to make a little whine when shifted into drive from neutral/park. Once in gear it used to drive and shift fine until recently. I was barely able to make it home. After a few weeks i went back out started it up, and was able to drive it down the street and back and then up my steep driveway with no issues. After letting it run for about 20 minutes, i pulled it back down the drive and attempted to drive down the street again, but it wouldnt move. it seemd like when i shifted it into gear nothing happened, but when i gave some throttle it made that whining sound again and appeared to somewhat drop into gear. I've also noticed that the Service Engine light goes out immediately after engine startup. It should stay on for a few seconds. I was told when i had it rebuilt the first time that this was caused by a bad ECU which i then replaced. Did the ECU go bad and in turn screw up the tranny? I guess my question is, is this an issue with the torque convertor, transfer case, or the actual 700r4 itself? I'll be damned if i drop another penny on someone asshat to rebuild the thing only to have it last another 20k miles.