2010 1500 4wd with 80k ......... is this typical for these trucks ? truck not off roaded etc 33" tires 4.11 gears daily driver & towing original pinion went about 50k now its goin again rarely in 4wd although in winter I do leave in auto a lot

 

No not normal something with the setup or bearing quality.

 

OK not typical Tks

 

Probably not related but what weight and type of oil are you running in it. These trucks come with 80/90 dino oil in the front axle only. Theres a TSB for shift problems in really cold weather due to dino oil and you put 75/90 synthetic back in. Why they didn't put same oil front and rear from the factory is beyond me. No where in the TSB is bearing failure addressed but I did see you live where it's really cold so possibility out there if diff is full of molasses in cold weather.

 

Good to know Thanks