After reading many of the threads and doing the tests recommended by many, it is clear that my TCC Selenoid has gone bad. Is there a simple way to replace the faulty one? I've read that it requires dropping the engine slightly to get to it, but I don't think I have the tools necessary to hold up the engine while I do that. Is there any other way? thanks...

I just unplugged my TCC and its been unplugged for a year now and it runs just fine

With the TCC unplugged, the car stays in 3rd gear. I have to manually shift from second into 3rd. It will not go into 1st with it unplugged. Is this similar to what you are experiencing?

Before I unplugged my TCC it would surge when I tried to take off but after taking off and having it die couple times it would run fine until i slow down and stop and try to take off again, after I unplugged it, it never did it again and I have never had a problem with it shifting or anything

With the TCC unplugged, the car stays in 3rd gear. I have to manually shift from second into 3rd. It will not go into 1st with it unplugged. Is this similar to what you are experiencing?

This isn't right. You sure you didn't unplug the shift solenoids? That's what it sounds like...

:nono: LOL

A 91 Lumina could have a 4L60 trans, which has a vacuum modulator and a 4 wire TCC switch. On those models, you can just unplug it and all you'll lose is lock-up. On the 93 Lumina, it has the 4L60E electronic transaxle (optional on the 91 also) with the 6 wire TCC plug. Since this plug also controls the shift solenoids, you cannot just unplug it or the car will go into limp home mode which is 3rd gear.

Thanks for that information. I do have that 6-wire and that's exactly what happens. I feel like I'm driving my grandpas old '53 Dodge pickup with the H-shift on the fly. :smile:

I guess I better get this car up on the blocks. The fuse for the TCC also controls the primary cooling fan, so I am not getting out of this one easily. I suspect that the gasket that keeps fluid off these 2 selenoids has gone out and fluid is getting in there and shorting them out. Is this a Saturday afternoon job that I won't loose my religion over, or should I bring this into the shop and let them do it. I just replaced my Ignition Control Module:banghead: , so compared to that, what?

Thanks again.

http://autorepair.about.com/cs/doityourself/l/aa011703c.htm

This is typical for the job...