6.0/3.73/6speed in mountains pulling 8000 lbs
I have 2013 suburban 2500 pulling my new Creekside 27 bh which is 8,000 loaded. First trip with this combo over Stevens pass hwy 2 in Washington state. Once the serious climbing started I was 2nd gea...
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The elevation is a big issue. I can tell you that my 6.0 6 speed with 4.10 gear pulls fine up to 5500'. Haven't been higher than that. I have pulled loads of 12k and have not has issue. With an 8-10% grade I can hold 55 mph much easier than I can with my old 5.3 half ton. Usually in 4th and sometimes in 3rd. Our current camper is about 6k unloaded.
