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Old 04-23-2008, 09:38 PM   #1
minamay2008
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Join Date: Apr 2008
Location: minnesota
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91 Buick Regal

I have removed the computer out of my 91 Buick Regal, I am getting a different one, I was told i need to keep my original Prom chip, does anyone know how i would get this out?
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Old 04-26-2008, 03:05 AM   #2
tbaxleyjr
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There should be a cover on the ECM which may involve using a screwdriver, nut driver or similar tool to open. The PROM is removed by GENTLY prying it out after verify any hold down brackets etc, if there are any, have been released. Do not damage the pins and install it in the new ECM. Be careful and follow proper static discharge /grounding procedures when handling the ECM or PROM

The PROM calibrates the ECM for your specific car.
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