95 Saturn SL2 transaxle codes 22, 23, 24 - slips when warm u

I'm having the same exact problems with the 22, 23 and 24 trouble codes
along with a slew of other codes including Quad-driver malfunction (anyone
know wtf that is?) and egr fault code, but mainly it ****es me off when i'm
driving 70 in the middle lane and my rpms decide to jump from 3000 to 4000
because my torque converter wants to take a little nap for a few minutes.

I have a 1993 saturn SL2 @ 140,000 mi, the only major difference is that
its got vacuum egr versus the electrical one thats in the '94s and newer
that you all have.

Heres the pincher tho. If i was having egr problems, my car would be
running like dookie. In reality i've won drag races at stoplights. I also
drive 40 miles to college on the highway every single day and if i had no
2nd, 3rd or 4th gear i'd be walking so thats out of the question. Now lets
say its a bad valve-body. If i got my mechanics straight that is sort of a
hydraulic controler of ATF flow and yeah theres quite a possibility that
this could be causing the failure perhaps because of a lack of ATF. Did i
mention it takes an average 5 seconds to shift into reverse gear and when
it does it SLAMS unless i have my foot solid on the brake?
The thing is tho, its not reliant upon heat when the TC acts up, it's just
touchy whenever it wants to be.

punchline: the engine codes (egr/quad driver) lead me to believe i have
computer problems but theres a chance i have valve-body problems too. I've
heard of saturns having terrible computers in them so that could be it too.
Not bad for a $250 car tho. pt a to pt b.