98 Tahoe Problems!!!

I have a 98 tahoe and have it parked right now because the transmission is going out. It stopped going into gear, so i changed the fluid and filter and worked fine for about 6-8 months. Well it started doing it again. It won't go forward or reverse after it reaches a certain temperature. There is sort of a grinding noise after it reaches that certain temperature. but if i turn it off and then back on it will work fine again. Has anyone else had this problem? I am thinking about taking it to the dealer so they can put a new one in instead of rebuilding it. they quoted $2,500 for labor and parts. What should I do? any suggestions.

Another thing. I finally noticed where it is leaking coolant. it is coming from under the truck where the manifold is. I think that is what it is called. it is what connects all the way down to the muffler. anyone know about this? thanks!

your clutches are gone. whats happening is that they keep get eaten up. the material get sucked up to the filter then when you turn it off and back on again it pulls cleaner fluid. you should be able to get it rebuilt for under 1500.00. the water sound like you need to replace the intake gaskets, an afternoon job for most. good luck

Thanks for the help! would you happen to know how much the intake gaskets would cost, parts and labor? I am still trying to decide whether I want to rebuild or put a new transmission in.

When the transmission went in my '97 Tahoe at 77,000 miles, a factory rebuilt transmission had a 3 year 50,000 mile warranty, and the transmission repair shop where it was towed to, only offered a 1 year 12,000 mile warranty. The shop wanted my business and I was able to negotiate the same warranty as the factory, so I went ahead and had the independent shop do the rebuild. I saved a few hundred dollars. Well, I was told later that with a factory rebuilt unit, the only piece of the old transmission that is used is the old case. Everything inside is replaced, not just the parts the mechanic
doing the job seems to think need replacing. After hearing that I decided to have the shop do a pan drop and fluid and filter change every year, plus I wanted to see the pan each time, to make sure no metal was in the pan. My warranty is up now, and so far everything is still working fine. If I had known what I know now, I probably would have had the dealer do it and spent the extra cash for them to do it. Why? Well, I was in Florida at the time, and I live in New York. Consequently, If issues developed, I had to either go back to the shop that did the job, or find a shop here who belonged to the same transmission rebuilding orginization the Florida shop did, to receive any warranty work. If the dealer did the job, no mater where I happened to be, I could take it to any Chevy dealer for warranty repair. Luckly, after 50,000 miles and 4 years later, the transmission is still working ok. Just some thoughts to ponder over before making a final decision. Good luck.