I have some but not a lot underneath frame I thought about pressure washing and just spray painting frontend and rearend anything else beside pressure washing I could try without 'removing the body from the frame ? Thanks Phil.
A power washer will remove grease and dirt but not rust. A media blaster will address rust. Wire brush, wire wheel brush on drill, comfortable creeper - then POR15 or rust stabilizer and flat black paint.
While your down there relaxing, replace the fuel filter, lube the U Joints and change the gear oil. And, look at your inner fendors where it meets the body, if you have rust on frame you got to look here to.