Re: 2011 Jeep Grand Cherokee Overland Sunroof Drain Holes
In all of my previous vehicles the drains were in each corner with the front hoses routed through the a-pillar and the rear through the b-pillar...I would be suprised if they weren't on the corners. Although they may be tucked back a bit.
Try pouring some water into the track of the sunroof and see where it goes, obviously not a lot of water but it should drain towards the corners. If you have an extra set of eyes they can watch underneath and make sure the water drains out normally. If one corner doesn't drain you just may have found your problem. Otherwise it could be the seal on your windshield.