[thenextyou]

Hi I have a 2001 Impala with the 3400 engine. The BCM is bad and I know that I can't just go to the junk yard and get another one and slap it in there without programing from the dealer of course because its coded together to the ECM and the radio. My question is if I do go to the junk yard and get all three from the same car would it know the difference?

I want to add too that so far my car is completely derivable I have 205,000 miles on it and just when the car gets warm will I get the picture of a car with a wrench on it and my dash and radio lights go out, on longer trips of 35 miles or so when the light comes on will the transmission start to act up and I get a code of the TCC stuck open. When its cold I don't get any lights and the car runs perfectly fine. I have had it to the dealer and they said it needs a BCM. I just have a chance at both computers cheap is why Im asking.