engine light came on.. i ranned the codes its the(tcm)and 3 and 4 gear ratio...

What is your question?

when i am driving down the road it use to shift out perfectly. but here lately my engine light doesnt go off.. as soon when i put my key in the ignition the light pops on... i can drive down the road and it shifts out perfect until i get around 39 mph. when it get ready to change out to 3rd gear.. it get to not want to go in gear. it picks up speed real slow. but i dont hear any noise coming from my transmission. but i did had a front seal leak for about a year or two now. but would that seal leak have any thing to do with my transmission not wanting to go in the correct gear at the correct speed.