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Troubleshooting Programmer of 2006 GMC Sierra that Stopped Powering On  

Question:

Hi i have a 2006 gmc Sierra with a performance chip. A few days ago the little box on the dash stoooes working .no power no nothing. What would be my first things to check for ? Everything under the dash appears to be plugged in . help?

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Expert Reply:

Most likely you blew a fuse. Typically on a GMC Sierra of your generation the OBDII port shares a power circuit for the cigarette lighter/aux power circuit. Sometimes radio circuit as well.

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Jameson C

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