I mean, mileage is important, but isn't it better that you drive it first?
For example, I bought my 2009 Alpha with 145,000kms (roughly 90,100 miles) and its like basic basic model..
.. but I wanted the engine and V8's are kinda like gold dust here. Most people think I've done an engine swap.
Anyway, around 4/5 months later I found another 2009 Alpha, it had the lockers on it and the screen etc etc.. only 77,000kms (roughly 47,850 miles)!!! Pictures looked perfect so I decided to go see it at the dealership..
As I was walking towards it, the first thing I noticed was that the previous owner had put another cooler in (could see it through the grille).. then I noticed the scratches everywhere.. thats fine, I can get it painted.... looked at the engine, crazy wires everywhere.. (I thought it's weird but I'm not a mechanic) .. stood on the step and noticed the whole roof was dented (previous owner probably sitting/standing on the roof) opened the door and half a desert fell out (I must look stupid because the guy told me it's because it was sitting outside for a little bit)..
So I decided to drive it and I just wanted to cry.. it had been used as a desert play car by someone who does not know how to drive in the desert :'( As I said, I'm no mechanic but I could feel like multiple misfires, sounded like a dying giraffe, pretty sure the axles and steering rods were non existent, transmission had died completely it never shifted out of 2nd and didn't even seem to know what reverse was, even the AC didn't work...
Poor H3 didn't deserve that type of deserve that type of cruel death.
Sooo, going back to it, I would defo drive it first... I'm sure you will but I just want to make sure haha!
I hope you find your perfect Hummer baby soon!