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Old 12-25-2011, 07:18 AM   #6
ChevyTech
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Join Date: May 2004
Location: Minnesota
Posts: 4,620
Re: Advice on new PROM?

When you had the ECM removed, did you ground the terminal for the check engine light to test the bulb and circuit and make sure the light works?
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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