It does not sound to be a push button 4 wheel. When you have the truck in nuetral and are using the column in the middle by your feet make sure when you put it in and out of 4 wheel you do 1 continuous motion. If you stop in each gear (4h 4l 2h nuetral) it will grind. As long as its a swift constant change of the gears it shouldnt grind at all. As far as the ac making noise when you start, is it a squeeling noise? Can you try to describe it more? Sounds like maybe it could be pulling the belt over the pulley maybe or a short cycling through the compressor.
Monday, October 4th, 2010 AT 6:11 PM