Bought this 4 years ago at 44K miles and am the 3rd owner. I had to replace the 4WD solenoid ($25) and both 4WD IWEs ($150 for 2) shortly after purchase. These are common issues on the 4WD system from my research. Absolutely no problems since, at 93K. This continues to be an extremely dependable and capable truck.
Surprisingly good mileage for a full sized 4x4 truck. I routinely get 15-16 average, and as good as 20+ mpg on extended highway at about 60 mph.