For all that dont know this is your transmission pan.  Inside here youll find your filter, and valve body and about 4 quarts of tranny fluid usually :)
Take off all but 2 of the 13mm bolts and drain the pan...then pull it off.  Carefully removed the filter by pulling strait down and taking out the seal...i used some needlnose pliers and this is what youll find a big hoobajoop of crap, now were gettin somwhere.
There were 6 connections to unclip and then just let them hang out of the way while you take out all of the 8 and 10mm bots that hold the valve body onto the tranny...once thats done remove the valve body itself and place it safely to the side.  Try to keep the checkballs in place but its not a big deal as TCI has a guide on where they go...the body is pretty heavy so be careful and there is some fluid topside so keep that in mind.
Next removed the accumulator housing from the transmission.  The TCI directions said there would be one spring on the valve body side and one on the transmission side.  I found I had 2 springs one large one small inside the accumulator itself.  I removed both and replaced with the spring provided.
I then refocused on the valve body...you dont need to move the checkballs unlike the transgokit but i did just so i wouldnt loose any of them in the long run.  There are 3 bolts you must take out and just keep track of everything then replace the large spring in the accumulator with the new one and put the acc. back together.  Then its on to the smaller spring...i used a screwdriver to get out the little stopper and made up a little clip using a cotterpin but you could use a paperclip to get the same effect this is used to get out the assembly you need access to.  Put that back together with the new red colored spring installed and the valve body is done.