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G-525371
I recently bought a 2022 GMC 3500 HD, 6.6 gas 6 speed trans, I have only owned GM trucks, very disappointed in the power in this gas engine, I have 373 gears, just has no performance!!!!!!, no passing power, also i have been trying to find anyone that can put any type of power adder and tune it, and come to find out today GM has locked out anyone from tuning this truck!!!!, I really wish I would of spent the extra money and bought DMAX version, really sucks!!!! no after market products to make this turd some what entertaining to drive!!!!! any help would be great!!!!