ECM installation

Tiny
STEVE B
  • MEMBER
  • 2003 DODGE CARAVAN
  • 10,300 MILES
My ECM failed on my 2003 Dodge Caravan. I bought a used one that was a match to the old one, installed it and the car started fine. I drove for approximately 25 miles and it was running great. Once I turned it off it wouldn't start. I was told the used one would reprogram for my vehicle as I drove. Is the problem that I need one programmed by a technician specifically for my vehicle?
Saturday, July 14th, 2012 AT 9:21 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You were misinformed about the pcm.

It has to be flashed to your vehicle. You need a dealer to perform this, if it can be done. Used pcms somtimes do not work and require new units only.

Roy
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Tuesday, October 29th, 2019 AT 3:20 PM

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