92' Lumnia APV Minivan Trans Troubles

Hey hows it going, im new to the board, i found you guys/girls while searching google for trans helps. My minivan is having some troubles. It started about 2-3 weeks ago, out of no where i was driving and the van started to studder, but for only a few seconds and then everything was fine. I came to a red light a few minutes later and the car stalled really hard. It was almost like you let the clutch out on an manual trans without giving it enough gas. So immediatly i thought it was the torque converter. So luckily i was able to push it into a near by gas station and i checked the fluid and it seemed like i needed some, so i filled it up and waited alittle for things to cool down (incuding myself). And everything was fine, i drove home like nothing happened, the trans shifted great and everything. So fast foreward 2 weeks, everything has been fine and the van wasn't acting up. Until today, i was driving and it started to studder again and then it stalled. So i put it in nuetral and everything was fine. Once i put it back in drive the car stalled. So i reved up alittle and dropped it into Drive and was able to get myself to a gas station. The only concern i have is i heard a slight grinding noise while driving. I was able to make it back home with the car wanting to stall every minute. The weird thing though is when i got about a block away from my house, the van was fine. The whole way home the trans felt sluggish and felt like the car wanted to stall. As soon i got near my house it felt fine and even when i was parking (using drive and reverse) it was like nothing was wrong. Any ideas what could be the problem? Also for the past 2 years i have a weird thing when i go from reverse to forward i hear something moving, like a peice of metal locking in place. Any ideas what the could be as well?

Im hoping that the trans will hold up for just a few more days or so, i have some important things comming up where i need to move some equipment. so if anyone could give some suggetsions that would be great. I was contemplating, flushing the trans and putting a new filter in it.

Car Specs:
92' Chevy Lumina Minivan APV
3.1L V6 Motor
150K miles
never had the trans rebuilt or flushed.
Owned it since it was brand new.


Thanks,
Chris

Remove the connector (probably blue) from the front of the tranny - driver's side toward radiator. That's your TCC and, though it helps with your mileage, can be disabled. Sounds like it's getting stuck!