I have a 2002 GMC 3500 cab and chassis 4x4 that need all four rotors and pads. I am wondering if changing these is the same as changing them on any other truck. I have changed rotors and pads on my 1500's many times. Is there anything different on the 3500 4x4 other than the dual wheels in the back and the wheel spacers in the front? Any special tools needed? It has to be an outside job due to the fact that the truck doesn't fit in my garages which is why I am asking in advance of taking it apart and freezing outside. Any info would be great.