Hey guys, I have a 99 GMC Jimmy and its running pretty good, I have about 144,000 miles on it, I have a problem though. When is it rains, water comes through the floor boards on the whole right side of the truck. Where the passenger sits and in the back seat on the same side. Its starting to **** me off! Does anyone kno what this is??? How can I fix it? Thanks

 

I would think maybe your door could be sagging. Check the pins in the door hinge or if you can pick up the door at all while its open may indicate the pins need to be replaced. My drivers door does the same thing, water leaks thru the top and then out the bottom of the door into the cab.