Honestly, many things could cause this, a bad ground, body control module. Has the check engine light come on? You may want to have the computer scanned to see if there are any trouble codes stored. Many nationally recognized parts stores will do it for free, and that way we will have a better idea where to start.
Have that done and let me know what they find.
Joe
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Friday, July 31st, 2009 AT 5:47 PM