New to me 2010 2500 4x4 auto

[HD-J78]

So, plan on picking up a used 2010 2500 4x4 auto on Monday. It has 135,000mi. What should I do as to preventative maintenance and regular maintenance? Anything I should plan for for future replacement/maintenance? I was gonna replace all the fluids, except auto take it to dealer for a service? The current owner has just replaced front ball joints and tie rod ends(?) and had a 4 wheel alignment done after wards.
Thanks.

 

[Alan Reagan]

Sounds like you have it covered. I just traded my 2010 Longhorn for a 2015. I offered the service records to the dealer but he didn't want them. You will be due for an EGR cooler service. It would be nice if that was already done for you. Check the serpentine belt and idler pulley and your hoses. With the mileage it should be due for a fuel filter.