I have a 96 9c1 that had a 4.3 but I put in a 5.7 from my 94 fleetwood and kept the 96 tranny and i wanted to find out about adding oil and transmission coolers also programing the pcm that i got out of a 95 9c1 N WASSUP 2 EVRY1
You may not want to put the 95 PCM in to this 96 car. Reason is that 95 was the last year for the OBD-I series computers, 96 came out with the OBD-II computers. They may not interchange. Have that checked before installing. There are some more and/or different sensors on the OBD-II than the previous series. One example is the O2 sensor(s) behind the cat.