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Unread 10-04-2012, 03:00 PM   #1
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Location: omaha, ne
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jeep cherokee pcm

i have a jeep cherokee that needs to have the pcm replaced. do i have to get it flashed to my vin or can i just switch it out with another one. it is a 2000. please help

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Unread 10-06-2012, 10:18 PM   #2
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1990 MJ Comanche 
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flashed to your vin?? not sure what you mean, but it shouldnt really matter if it is what i think it is. It comes preprogrammed with "default" settings and will "learn" ,if you will, how your engine operates best. The best thing to do is to replace it and then drive a couple gentle laps around the block.

question, how do you know your PCM is what is bad?
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Unread 10-07-2012, 12:57 AM   #3
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Unless you have the SKIM security, you don't need to have it reflashed. Make sure the new one you get is the same.part number, or at least an updated one. Usually it works by adding 2 letters to the end of the part number. IE, 123456789AD has revisions made and is still able to replace 123456789AB.
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Unread 10-08-2012, 02:44 PM   #4
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when the auto mechanic ran a test the everything was working and he overrode the system and started it. after i shut it off it would not start. the fuel pump was working so the mech said it was the pcm
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Unread 10-08-2012, 11:12 PM   #5
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1991 XJ Cherokee 
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What do you mean he 'overrode' the system? If your key is gray, you have SKIS/SKIM. You need a DRBIII scan tool (about 5 grands) to reprogram the VIN in the ECU.
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Unread 10-09-2012, 06:45 AM   #6
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Had to replace it on the 97 TJ. I bought it online and the company I bought it from flashed it with the vin. So, I would assume your 2000 needs it as well. Did you post this on teh Cherokee forum? This is the comanche forum.
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