2022 Chevrolet HD Duramax

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**hiperf69** · #1 06-14-2022, 11:18 PM

Hi Larry, when I bought my 2020 it would get 24-24.9 on road trips.
It’s been in for service work this year,
(61 day in the first 3 months) and thanks to the General it now gets
17-17.5 on the good days.
Can’t seem to cure it so, I think I’ve had enough.
4 Dura-Max trucks in 13 years.
I think GM has decided that I will just be OK with it.
They are wrong.
Your 10.9-11.6 is terrible and they should be able to help that, I would think.
Good Luck, Joe.

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