I was a GM guy for years, not saying that I would never buy one again but since I began towing a travel trailer I switched to Ford for two reasons: 1) a bigger gas tank, and 2) better choice of axle ratios. As the gas mileage while towing seems to be about 10 mpg the range was just too short and since I was planning on a trip to Alaska the range would have been way too short. Then found that the 3.42 axle ratio left me short on power as it resulted in a lot of shifting and high RPM's while towing. Got to hating the engine revving way up and the shifting between gears. Am not wanting to get into a Ford vs. Chevy argument but if GM would have had options more conducive to towing I would probably still be driving a GM.
