After some time I have located a pcm same year same numbers on pcm as original and installed it in my saturn. Transmission problem GONE! Shifting is very smooth now, over pressure problem had been going on for some time but did not notice it(transmission seemed to go into overdrive somewhat hard at low speeds CLUNK!) This is also gone. But I still have a few problems. Obd system is now not giving code 25 (i guess that's good)but I am getting code 26 (quad driver mod a fault)and code 81(tcs fault) even though the numbers match on the pcm, s I think I may have gotten one from a car with tcs/abs. My car does not have tcs/abs. This would explain code 81 am I correct? Also the quad driver fault is due to the fact that pcm does not "see"the tcs/abs as there is none installed (open circuit fault) am I thinking correctly or am I up a tree! The question is if im correct will this affect driving my car! (I can live with the "ce" light or perhaps some black tape please.)Id hate to break something, repair was cheep ($27.00 bucks. Cant beat that)but as part came from a bone yard im still aprehensive? Can you shed some light on this for me. You were ABSOLUTLY RIGHT on the pcm YAAAA! If I can go forward from here into the saturn sunset of driving destiny it would be great but demons may still lurk under my hood! Please get back to me THANK YOU!
Saturday, March 31st, 2012 AT 11:32 PM