Sluggish towing with GMC Yukon
I just picked up a used 2007 Jayco Exp 17C & towed it home last night with my 2011 GMC Yukon SLT. The drive was 2 hrs & lots of hills in TN. I had the tow mode on. It seemed to struggle up the big hil...
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It sounds to me like your trucks performance was perfectly normal. Most people get between 8-10mpg while towing a travel trailer. As has already been mentioned, it is not the weight but the wind resistance that is getting you. I would think many folks would be very happy to tow 60mph up large hills and average 8 mpg overall while doing it. :)
Barney
Barney
