1993 cadallic allante emissions
 

I got DTC codes on an OBD1&2 test unit DTC 19, 55, 54, 115, and 113:( The 115 code calls for replacement of the engine control module. I've bought a remnf. unit and would like to know if i can replace it or if a special programing tool is required for the learn process. If any one can help it would be greatly appreciated.