2012 2500HD CC SB with 6.0L and 3.73 ratio
Hi all, Took our first long trip with my newer tow vehicle. I went from a 2006 chevy Duramax to a 2012 6.0L gas with the 3.73 ratio. Now I fully understood there would be a difference due to it b...
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I have the 4.10 gears. 6th gear is not for towing. 8 1/2 mpg sounds about right. Honestly, the downshifts are smooth enough and the noise fairly subtle enough that I'm usually the only one who can notice it out of the four of us inside the cab.
