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Hey thanks a lot

I'm a noob and put an aftermarket intake on my truck (2018 Colorado 2.8 duramax.) I'm trying to learn slow but every strategy I've seen to calabrate isn't working for me because they're all on...

So what does one do from here. these tuners arent cheap and we cant access the DTC's any tips on how I can access them by any means?

Hi can you please give me a better understanding of how you found that? I'm having a lot of trouble finding the DTC's for my 2018 2.8 duramax.