I've started to get rust on the cab corner section of the drivers side rocker on my 1995 extended cab Chevy truck. I thought it was from stone chips taking off the paint. I was looking at the rusty spot, and it is right under the side window. I checked the window and found the seal to be loose. Could the window be leaking, and letting water into the back side of the metal? Would this cause the rocker to rust out, or is it more than likely just rocks chipping away the paint?
Steve