PCM replacement with used??

I have a 1999 durango with a verified defective PCM (engine computer).

I have been told by 2 seperate Dodge service depts. that PCM has a one time (burn-in) program procedure, and cannot be reprogrammed, therefore only replacement can be with a new computer at about $565.00.

Can a used computer with a different vin# work as an economical replacement?

Will this affect other modules that are also vin# burned?

What other modules are vin burned?

Can these problems be avoided by replacing modules together?

I would really appreciate any help from someone who has actually faced this issue. I'm a mechanic, and I can make educated guesses, but I'm looking for some facts to help me through this problem.

Thank you!

Check with your scrap yard they will know. I do know the computer numbers have to match. Same size engine and ect. Most scrap yards give a 30 day warranty so they will tell you.
Rebuilt units are listed on http://www.ebay.com/ for around $199.00 search dodge computer.

The salvage yards, and the dealers both say that the PCM will not work..... because the vin# cannot be re-programmed.

However what I want to know is whether or not a PCM with a different vin# will still operate the vehicle without any adverse reaction since they have bus communication between modules.

2nd I would like to know what modules interact via the bus communications; and if they will not interact with eachother (because of different vin#s); can multiple modules from the same salvage vehicle be replaced as a set to operate properly?

FYI: I know that the dash cluster (speedo/odometer) can be interchanged with no adverse reaction. display odometer mileage is kept in this unit.

How did you verify that your problem was the pcm?I have a problem with my dodge,the only code it throws out is map sensor,map sensor tests fine.Turn key method for codes does noy work.

the pcm will start the vehicle if you have no skim(gray key). but the abs and brake light will flash and throw a dtc for a mismatched vin..