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Old 03-11-2014, 07:14 AM
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Dealer having to replace the PCM

Has anyone had to have their power control module replaced yet? The dealer found out ours had to be replaced when the alternator and battery burned up last week.

I have been doing some digging and I can not find out much about the PCM or where it is located in the jeep? Also how much these things run?

Its covered under warranty but I am just curious if any of you guys have had to have yours replaced or have any knowledge on the subject.
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Old 03-11-2014, 07:58 AM
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Re: Dealer having to replace the PCM

Mine was replaced when my Jeep was a couple of months old. This is during the time that Chrysler was trying to figure out what was causing the "Christmas Tree Dash".

I believe it is the silver colored thing that sits on the right (passenger) side under the hood. It's right up front, looks like a big heat sink, with a bunch of wires plugged in.

It was done in a very short time, while I waited. It was under warranty, so I never paid attention to cost.

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Old 03-11-2014, 08:34 AM
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Re: Dealer having to replace the PCM

This sometimes happens with bad grounds. If a major ground comes loose, the circuit energy tries to return through smaller weaker grounds burning them out. I would be concerned that something else may have burned as well.

That being said, ECUs do burn out though and they are not cheap new, >$1000. Luckily, anytime I've had to replace one, I was able to find it at a junk yard for substantially less. I don't have a 12+ jeep so I can't tell you where it is specifically.
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Old 03-13-2014, 07:49 AM
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Re: Dealer having to replace the PCM

2011 summit. had mine changed this past summer......34000 miles.
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