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I have a 2018 duramax denali hd, it has been in the shop more times then I can count. I am having issues with the regen, I have 42.000+ miles on it and it only completed 1 full regen. what can I do? the dealership tells me that I need to use it like it is intended for and that is hauling a trailer since driving it hundreds of miles at a time doesn't complete the regen.

Hey man , I’m new to this forum and have some questions. Could you get back to me on here or email?

We are a couple of weeks away to finish valave body kit.

Best mods to improve MPG and Go :
1). Full exhaust or slip on ?
2) programmer ?
3) EGR delegate ?
4) Aftermarket Airfilrer ?

2019 Silverado Duramax 2500 HD 4WD Crew Cab High Country