[Boog]

I have a rear window leak around my '06 GMC crew cab. The headliner is stained on both sides in the outer corners. The stains are only in the corners. The slider is factory and there are no cracks around it's perimeter. As far as I can tell the upper tail lamp has never been out. The glass shop suggested it might be coming in around the lamp assembly. So that is the most likely source of the leak? I wonder about the area around the glass in the upper outside corners where that rubber strip is on each side. It looks like water could get in there as well if the adhesive failed. Anyone else deal with this water problem?