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Called my GMC dealer today, I do have updates. The one update he mentioned was for the DEF and Regen cycles. He said the computer is using to much DEF and the regen cycles are too often and there is a software update to address these issues. Heading in first thing in the morning.
Tony
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2018 3920fb 2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover. 50gal titan in bed transfer tank. Onan 6500 lp genset installed by me ! Had: 2 HF 3500 Inverters with Parallel Kit
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