1990 chevy tran's

Depending upon mileage, which you don't state, and maintenance, which you don't state, and service, which you don't state, and engine, which you don't state, the problem just might be that you need a transmission rebuild. I suppose you could have a pan full of gunk and a clogged filter screen so I would try changing them just to see if it helped.

Your forgot the most important part...................TYPE OF TRANSMISSION. It's gunna be a TH400 (3-speed) or TH700R-4 (4-speed).

Doc

You're right, of course, Doc, but a guy that doesn't know what he doesn't know doesn't know what transmission he has. With a 14 year old product and those symptoms, he's probably at the tranny shop now getting screwed.

Thanks for the vote of confidence

It's always feels hard not to feel like your getting screwed when you can't afford the gas to run the vehicle, and then it breaks. The only way you wouldn't be in a nasty mood about it is if you got paid to fix it. :-)

~KJ~

I have great confidence in older GM products, especially well maintained ones. By the time it's slipping though, the game is usually over. I sure don't have much confidence in newer GM products and never trusted a transmission shop.

Good for you, you generalizing blow-hard (and that's toning it down considerably from the first draft).

TRANSMISSION.

Sure he does.......... 1-2-D it's a TH400, 1-2-D-OD it's a 700R4. It ain't rocket science..........

Doc