Glow plugs dont work after programmer

CUMMINSTD

New Ride, Poor Wallet :/
Joined
Sep 2, 2009
Messages
388
My buddy installed a bully dog downloader in his 06 duramax, and after the install none of the glow plugs work. He took the bully dog out and they still wont work. He is getting trouble codes po671 through po678. Could the programmer have messed anything up or could the module just be bad?
 
the 2 codes mean glow plug #1 and #8 are not functioning.
 
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