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ReedsMax 09-16-2009, 08:07 AM My Bullydog programmer is not recognized when I plug it into my diagnostic port under my dash. I had work done to my AC about 2 months ago, could the mechanic have reset something on the computer to not recognize my programmer. The programmer worked fine the last time I used it. Philbilly2 09-16-2009, 08:31 AM by not reconginze, do you mean that the unit does not light up, like it is not getting power? Or is it not finding the ECM? wreedLBZ 09-16-2009, 09:04 AM check the odb fuse ReedsMax 09-16-2009, 04:17 PM It does not light up, no power. Where is the odb fuse? Is it under the hood or in the cab. wreedLBZ 09-16-2009, 06:43 PM under hood i believe, check owners manual RedG 09-16-2009, 08:41 PM Also check the cig lighter fuse. That's usually what's wrong. Philbilly2 09-17-2009, 04:12 AM Also check the cig lighter fuse. That's usually what's wrong. Bingo, check the aux 12v power fuse. That is the fuse that sends the 12v to the ODB port. ReedsMax 09-17-2009, 03:09 PM Bingo. That's exactly what it was. The cig. lighter fuse. Thanks ReedsMax 09-17-2009, 03:11 PM Another thing. Two codes showed up on my Programer, P0380 and P1621. Does anyone know what they are or can help me find out what they are? RedG 09-17-2009, 04:33 PM Another thing. Two codes showed up on my Programer, P0380 and P1621. Does anyone know what they are or can help me find out what they are? P0380 Glow Plug/Heater Circuit "A" Malfunction P1621 ECM Control Module Long Term Memory Performance ReedsMax 09-24-2009, 06:45 AM Would those codes be covered under the GM Warranty. | ||