If you were to get a loan for it, you would have to consider the cost of insurance, gas, and repairs, with the additional cost of making that payment every month. Have you checked anything out other than the interior & body? Trans, (Oil smell burnt?) New tires? (If so, that could be hiding front end probs) CEL on? There's a bunch of things that these trucks like to kill, such as water pumps, rads, &, because it's a vortec, intake manifold gaskets. If those haven't been done (the gaskets) on an engine with that mileage, I'd be doing those as soon as I got the truck.
If one, or any number of these things, decided to go south on you, would you be able to fix them, & still be able to make that monthly payment?
As you can tell, I'm a little leary of getting a loan, for an old high mileage vehicle.
Banks won't usually touch a vehicle more than 5 years old for a loan. So, that means going to a finance Co. with big interest rates.
If I was to get a loan for a vehicle, I'd be looking at one a lot newer, more predictable, & more reliable. Not saying that that one isn't, but it is an unknown at this point.
Nothing sadder, & more frustrating than making payments on a broken vehicle. Can't sell it. You could, but would you get enough $$$ to pay off the loan? And you can't drive it, cause you can't afford to fix it in order to make the payment.
Not saying that this is your situation, just something to consider.