I need to know, how can you tell if you have a bad ECM or BCM?

Tiny
JUSTINCOLE1125
  • MEMBER
  • 2002 SATURN VUE
  • 3.0L
  • V6
  • AWD
  • AUTOMATIC
  • 69,000 MILES
I'm going to purchase a used car and the dealer is giving it to me for a lot cheaper than it is worth mainly because he believes it has a bad BCM, but when I called back the 2nd time, he said something about the ECM.

So, I was just curious as to what signs to look out for in order to determine which one in fast needs to be replaced, the ECM or the BCM.

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Sunday, June 15th, 2014 AT 4:01 PM

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Tiny
SATURNTECH9
  • MEMBER
Honestly there are alot of different symptoms for both I have seen way more bad bcms on those then bad ecms. Call them and ask the details why the computer needs to replaced and which one is?
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Sunday, June 15th, 2014 AT 9:35 PM

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