Hi..I have a 03 Silverado Z71 with about 95000 km on it. About a month
ago I had a nasty grinding noise coming from my transfer case
periodically. I took it into my dealer and it turned out to be my
electric 4x4 switch malfunctioning. I guess its a common thing, it was
putting it into 4 hi and 4 low whenever it wanted.
So, that was all fixed and I was happy but now, when I go over cracks
or small bumps in the road I can still hear a rattle coming from what
sounds to me like the transfer case area? Could something be loose
inside? I crawled under the truck and was playing with the driveshaft
but can't notice anything. And now today when I went over a small bump
I heard the rattle noise and then that same grinding noise until I
stopped the truck. It sounds to me like the rattle or loose parts
noise is related to the grinding? Any thoughts on this?