Real world experience with current 4.3 liter 6 cyl?

[TanCanMan]

I am looking towards retirement and more travel in the next year or two and planning on making a move from my 6.0 Minuet to a 24-26 ft Airstream/Argosy for more comfortable travels for two adults and an old dog. Current 6.0 Argosy is dandy little trailer but will not cut it for weeks or months on the road.

Also looking for a new to me truck and came across what seems like a good deal (asking $25K) on a 4 door 2014 Silverado 4x4 W/T with tow package, stability assist and payload upgrade. Pretty much an oil field service truck but with only 17k miles. Due to the downturn in the local economy caused by the cutbacks in oil & gas spending there are a number of companies getting rid of surplus equipment, but it usually the beat up equipment they dispose of first.

My only concern is it has the 4.3 liter 6 cyl motor coupled to a 6 speed auto. The literature claims 7,200 lb tow capability and 2,100 payload; should be more than enough for a 4,000 lb - 5,000 lb trailer. Anyone out there with thoughts, opinion and experience with this motor? Seems like a fit if you can believe the GM propaganda. Another plus for me is the 2,100 payload in case I want to get a camper for more rugged excursions when it is just me and the old dog.

Would really appreciate your thoughts. GM claims upto 22 mpg which would be great as it will also be used as a solo traveler for road trips. Has GM come up with the perfect truck?

Thanks!