i have an 03 silverado extended cab (LS) and my passenger side rear window leaks when driving down the road.looks like the gaskets are the problem. has anyone else had this problem and how did you fix it?

 

Yes, I had this same problem or one like it. I took it to the dealership and they drilled a small hole in each latch and into the door frame and screwed in 1 or 2 inch screws into the frame totighten the windowsup some. It is a common problem from what I was told. It stopped on one side, but my drivers rear window kept leaking. So I tightened it myself and it helped, but did not cure it. So I was looking and it looked like the 2 front hinges were pushed out so I pushed from the outside in too were the hinges were and it pushed in and never leaked again. Now to keep it from happening again I never open those windows.