Taz56 Posted September 6, 2019 Posted September 6, 2019 Hi I had the Black Bear Performance tune on my 2014, when I bought the 2019 they told me they can not tune this truck because the codes are locked down. Anyone else using anything else? I am running a 2019 GMC Sierra AT4
BringTheRain403 Posted September 6, 2019 Posted September 6, 2019 There's nothing out there. The encryption hasn't been cracked yet...Sent from my Pixel 2 XL using Tapatalk
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