Question about 1995 Buick Park Avenue

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If I change the ecm, does it need to be programmed? I'm purchasing a new one from a local parts store and have never done one.

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Late 95 into 96 is when the changed from an ecm that had a replaceable (prom) to one that was made into the computer that would have to be programmed.Check you original ecm for a plate covering a removeable prom if it has one swap it into the new one and your good to go If not you will need to get the new one programmed

Posted on Sep 08, 2010

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