Ok so i changed out one of the cooler lines as i discovered it was leaking...ran for 2 days without a leak...i then noticed a tranny leak from up top, right below the slave master cylinder on the left side facing the engine? Any idea where it could be leaking from? I wasnt aware of any transmission lines going up there...

I don't know exactly where you are talking about, but is it the accumulator piston cover?

Can you post a pic??

I've read the post a few times and I can't figure out which side of the tranny you are talking about. If you are on the driver's side near the gear selector, then we could be talking about the seal behind the neutral safety switch. The accumulator piston cover is on the passenger side...

it is on the passenger side of the truck just next to the wheel well

Sounds like possibly your overflow/breather.

When was the last time you changed fluid? Slightly overfilled by chance?? doesn't happen normally with our goofy set-up, but I guess it's possible.

That vent could also release fluid if you ATF is overheating.

i just added more fluid when i replaced the cooling line to the casing of the transmission...approx 3.5 quarts as i was unaware of how much actually leaked out we had driven it a while before we noticed the leak. the transmission itself doesnt feel hot when i put my hand on the tunnel but i noticed that it only leaks after its up to its opp temperature and driven a while.

they arent the greatest pics i took then with my phone http://i80.photobucket.com/albums/j161/billindelicato/IMAGE_045.jpg
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Did you add fluid into the fill plug; i.e. hand pump it in from upside down WITH the truck running in neutral?

You mentioned you added fluid into the casing - I just want to make sure you didn't add fluid through the ATF cooling lines, as that's not the correct way to measure fluid for this tranny.

With this tranny, dipstickless years, you have to check the level by having the engine at normal operating temp, to accomplish this, on a normal temperature day, just start the truck and let it idle for 2-3 minutes, then shift truck through all gears, pausing for 10 seconds in each gear, put truck in neutral (emergency brake on of course), LEAVE truck running, and slowly unscrew the fill-plug on the transmission pan, if fluid drips out, put the bolt back in, you're good to go.

If NO fluid drips out, pump in more ATF until it starts to drip out. Bolt her up and you're good to go.

Do NOT pull the fill plug without the truck running, or after having driven for more then 3-4 miles, I did the latter and, because fluid expands, truck dropped out 1-2 qts the minute I pulled the fill plug, this left the transmission 1-2 qts low on fluid, cause the level had been near perfect prior to this.

IF you added fluid into the cooling system line, sounds to me like your ATF level is high - NOT GOOD; in which case, follow the above ATF fluid level procedure, but start with a cold or cool truck/transmission.

Also, keep in mind, if your tranny blew out extra ATF because it was too full, it could easily become too LOW.

Keep us posted.

FWIW - are those your original heater core hoses I see next to your firewall, running alongside your A/C pipe line?? If so, take a GOOD hard look at those babies, mine on my '97 Rodeo, blew out last year from brittle rot. These hoses are not too easy to find, only Napa and the dealer are your sources, and they're not cheap, but they will cause a hell of a pickle should they blow on the road.

no those are replacement hoses actually and yes was a hell of a time to find them...i did add via cooling line...when you say start with a cool tranny its been sitting in my driveway all night should i start it let it run a few then drain it? or just drain it cold? when draining from the fill plug how much do i let it drain? would it better to just take it to the dealer and let them service it thus giving me proper ammount? it hasnt been done in 20000 miles or so that i can remember. atleast a year and a half.

No, I'm not saying *drain* it.

If you get under your truck, there are 2 plugs on the transmission pan - a lower plug, and an upper plug, the upper plug is your fill plug.

Yes, start with a cool transmission on a VERY level surface. After following the warm-up procedures - but do NOT get the tranny hot, VERY slowly loosen your fill plug, if fluid comes POURING out, your too full; let it settle to a moderate drip.

If it's dripping out, put your plug back in, you're good to go.

If it's been 20k miles, you ARE do for a fluid change - in which case, just take it in if you're not comfortable.

Your ATF level is too high, do not be driving it until the level is corrected or you could be doing major damage.