Just showing where my hummer is leaking in the rear. I also have a front water leak but havn't confirmed its location yet.

 

Thanks for posting about this, I have the same leaking in the front but my back is okay. I put new gaskets on the center roof light and check the sunroof drains. But my front floors are getting wet in the same places as yours.
Please post updates if you get it figured out. I'm going to look at my front corner lights next.

Thanks

 

Anyone ever take the rails off the roof rack?2003 H2 Not the silver cross tubes but the rails parallel with the tires (black) that hold the tubes I took all the torqs bolts out and nothing. What am I missing??? Trying to seal a front driver side leak thinking its through the bolts or the wire boot. Thanks in advance!

 

Ya the front rear corner lights have a boot that seals the water from coming in. Also a torqs bolt that holds the plastic rail in. The three marker lights have foam underneath them that get old and washes away. Best to put new foam on the marker lights or silicone. The corner lights have that rubber boot. I need to take the rail off but after removing the torqs bolts, I still could not get the plastic / metal rail off. Cant get to the rear boots without taking the plastic light housings off. I think the rails are glued besides the torqs bolts but unsure. i may be missing something. Driving me batty!