The roof is leaking on the front and rear headliner and around the sun visor bracket, driver side pillar, any ideas where the leaks could be coming from?




Rear cargo area

Driver side headliner

sun visor bracket

 

Just keep an eye on the weather, if you see rain in the forecast, park in the garage, and don't forget to avoid car washes too.

 

it could be the roof light gaskets or electrical plugs under the roof lights.

 

Mine was sunroof drain. The hose popped right off the drain and was just leaking water into headliner instead. Also had one of the rear roof lights leak.

 

Search the forums - this is something every h2 owner has gone through. When you start correcting the issues and see how Hummer designed it originally (lol) you will understand why they all at one point leak. It can be corrected just take your time and seal all the areas mentioned in the posts. Start at the clearance lights (new gaskets can be had on eBay). Also the top front drains above the doors (diverted by rubber seals).

 

Corner and marker lights are generally the cause, especially if you've already had the sunroof drains blown out and checked, like I did. In my case, it was the driver side front corner light,