OK so my Jeep is now officially the beach crawler with my 3rd child on the way and I am looking to purchase a used 07 yukon denali. I don't know much about them. Anything i need to be looking out for? it has 67K miles which is good for the year, but anything i need to be worried about at this point? They are asking like $24K. Any help would be greatly appreciated and if all is good, I'll be cruising around in it soon. pics to follow after I get it to my buddies shop for fun.

Thanks everyone.