Looking at the 10th generation of GMC Yukon XL (Chevrolet Suburban). Thinking about 2012 or so. When did it get the 8-speed transmission?
I am mostly interested in the 6.2L engine as I hear it gets similar mileage to the 5.3L. I've had the 6.0L engine which got 11MPG consistently.
I now have the 2008 Tahoe with the 5.3L and the old 4L60E. I tuned the PCM myself in the Tahoe and the MPG came down a bit to 15MPG on the highway and worse in the city but the 5.3L got a considerable increase in power running 91 or 93 Octane.
I hear 6.2L should do at least as well as that and even higher with the 8-speed.
which years are best for the Yukon XL between 2007-2014? What gearing is available? 3.42? 3.73?
Second question, what's the largest gas tank one can install instead of the 31 gallon tank? Will the 2500-series Suburban 39 gallon tank fit?
I might tow occasionally but not enough to justify the 2500 series Suburban/GMC. (Not sure there was a 3/4-ton Yukon XL).
I am mostly interested in the 6.2L engine as I hear it gets similar mileage to the 5.3L. I've had the 6.0L engine which got 11MPG consistently.
I now have the 2008 Tahoe with the 5.3L and the old 4L60E. I tuned the PCM myself in the Tahoe and the MPG came down a bit to 15MPG on the highway and worse in the city but the 5.3L got a considerable increase in power running 91 or 93 Octane.
I hear 6.2L should do at least as well as that and even higher with the 8-speed.
which years are best for the Yukon XL between 2007-2014? What gearing is available? 3.42? 3.73?
Second question, what's the largest gas tank one can install instead of the 31 gallon tank? Will the 2500-series Suburban 39 gallon tank fit?
I might tow occasionally but not enough to justify the 2500 series Suburban/GMC. (Not sure there was a 3/4-ton Yukon XL).