Check all fluids. Actually Change all fluids ie: Tranny, Coolant, Oil, and T-case. Check that the 4wd works, remove the diff check bolts and use your finger has a dipstick and check it out. Check tires for wear. Jack up front and hold the wheel laterally and try to move it. You have my phone #.. gimme a call and I can walk you thru alot of this and other stuff.