1st 2nd slipping??
 

im so confused now

I realize you trying to figure out exactly whats wrong with your transmission but if the transmission has over a 100K and it slipping and you sure the filter has been replaced and the fluid is fairly clean then 98% of the time its going to need a rebuild. Even if you find something you can fix you slip a 100K tranny a dozen times or so and you then fix the problem your most likely going to have to rebuild the trans anyway. There could be any one of a 100 things wrong with your tranny and even some odd ball combination but they are all things that can be tracked down once it is a part.

Without pulling the tranny you can access the valve body and the accumlators. These control shifting and not slipage. Once you pull a high mile tranny to work on it you want to install a master kit and get everything tested. It is not worth repairing one thing and putting it back together.

definetly. but in OD on the highway it drives fines, it wouldnt be the TC would it?

Might be, most likely its your 1st/3rd gear clutch pack or pressure problem. You wont know till you pull it a part. Even if it the TC your going to need a rebuild because when the TC fails it put small metal fargment into the trans, these will cut the seals in the tranny at some point. Most of the time when a TC fails it never really cause much slippage, normally it starts to fail then destorys the tranny before the TC completely fails.

your the man. i appreciate the help.. me n the fiance r gonna jack it up and drop the trans. cant wait to get into it

You are going to rebuild the tranny yourself?

yea man, ive been in the army the past 4 years as a mechanic ( which i know doesnt mean much in that aspect) but while i was in a worked on my MS6 alot. dropped the subframe, trans, and replaced the ****ty ACT clutch and flywheel for a beastly Clutchmaster FX400 6 puck kit.. so when it comes to dropping the trans its cake. but once its out and i start to disassemble it is where i start learning about that. i got the time to do anything now that im out

There are a ton of special tools and very specific tools even from one transmission to the next. The first thing you have to pull is the front pump. You you have a pump puller? Do you have a manual? Any manual should have the list of tools you would need.

When you repair a transmission all it takes is one mistake and it will either not work or wear out very quickly. I am a GM trained master tech and a former transmission rebuilder and I would not want to try it at home without a huge investment in tools.

if you r+r yourself and have a means to transport it, you should be able to get a decent bench rebuild and rebuilt TC for well under $700. Toss in an upgraded sunshell and sprags for an extra $100

12 quarts of fluid, a new rear main seal in the engine, new tranny mount, 2 new ujoints

Agreed^^ the cheapest way to do it is to know someone that does this all day long. You pull it and take it to him at his house as a side job. The reason I like to use guys that still do it full time is because they are constantly new upgrades and these guys will even tell what kits they like to use to get the best job.