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GMC Sierra Bully Dog Performance Chips

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Latest Customer Reviews

Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


bully dog rating

Reviewed By Tim B (CORINNE, UT) Reviewed for a 2003 GMC Sierra —2/24/2016 5:28 AM

i would have thought that you could adjust between performance , towing ect. without redoing the whole set up. other than that i am completely satisfied.

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Bully Dog Triple Dog GT Tuner (50-State Legal) Reviews


06 Gmc

Reviewed By Olivia C (OKTAHA, OK) Reviewed for a 2006 GMC Sierra —3/17/2015 8:14 PM

Best ever well worth the money my truck runs great

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Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


Made no difference

Reviewed By Nolan S (MERRILL, MI) Reviewed for a 2008 GMC Sierra —12/18/2015 4:38 AM

Installed this product and it made no differnce, played with settings and still no difference. Installation is pretty difficult.

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