Cadillac Repair: 92 elderado cadillac, oxygen sensors, cadillac service

Question
service ride control ison the codes are as follow: eo13,eo17,eo30,eo42,eo46,io39,io52,ao11, no sir codes, and ecm?  

Answer
E013 = right oxygen sensor fault.
E017 = left oxygen sensor fault.
e030 = Idle spedd control motor out of range.
E042 = oxygen sensor fault.

I would FIRST CLEAR (erase) all the codes from the computer and see which ones return.

Either you have low fuel pressure or both oxygen sensors are faulty.