Just go to bestbuy and tell them what you need. I got mine there "2007 grand prix gt" all they asked is if it had onstar, monsoon system and three our five button. Wiring harness cost me 99 bucks
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11-24-2011
Just go to bestbuy and tell them what you need. I got mine there "2007 grand prix gt" all they asked is if it had onstar, monsoon system and three our five button. Wiring harness cost me 99 bucks
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