Startup after sitting for 2 months

Nothing at all really just do your standard pre-trip engine check, and fire it up

 

I'd replace the batteries and fire it up. The only thing I can right off think of is if your antifreeze wouldn't have been good enough and frozen causing problems of course, but that new of a truck you should be fine

 

Might have been low on antifreeze when you left it.

 

You would not see it on the dipstick anyway. It would be in the bottom of the pan. You could loosen the drain plug but do not drop it. A little water would not be uncommon from condensation. A little coolant is not good but you could drain it off and fire the engine off without concern.

 

Evaporation of water from the cooling system over that time frame would be considered normal or pressure test for leaks if it makes you feel better.

Either way.........grease it, change the oil and all filters and get back to work.

 

The best advice I can give is really pay attention and mark or tie battery cables that go together as soon as you lift them off the post. It's one of those simple things that can go wrong quick

 

Now that's good advise.
We start agricultural equipment all the time that has not been touched longer than that. Fired off an irrigation engine today. Checked the oil and coolant. Put the battery in and fired it off.