GM 6.0 gear searching.....

goducks10 wrote:
All GM 2500 trucks now come with 4.10 standard. Must be a reason.

I had a 2011 2500 HD CC with the 6.0 and 3:73. I traded it in on a 2015 3500 CC with 4.10 and it was much better. With a size larger tires than OEM I got 13-14 mpg not towing and down to 5-6 at 30K combined. If you are really working the suburban your actual towing mileage my go from not changing to perhaps improving slightly with the 4:10's. I think it is the best bang for the buck improvement you can make for what you use the SUV for. You might see a 1 mpg reduction in hwy nontowing mpg. The 4:10's are a much better match for the 6.0 than is the 3:73 if you towing with it. Love that motor.