ive done lot of stuff to my car but my check engine light came on and it shows its the quad driver module circuit #1 my cars a 93 trans am with a 6speed i think it control computer grounds but im not sure which one or if it even does any help on this subject would be appreciated

 

You need to visit LS1Tech as your '93 (4th gen) isn't covered here on these forums. Also, try using some punctuation.