I have a 2011 Malibu, with a sunroof that leaks. It's been supposedly repaired by 2 different dealers since we bought it in September 2014. No one seems able to stop the leaks. The drain tube on the passenger side was off the first time, but after a return to that particular dealer, the leak came back in 2 days. The 2nd dealer said the man who was certified in this repair had gone to a larger dealer.

 

Where is it leaking to? Same spots? Is it leaking into the headliner?

Is the drain clear and working?

No one has replaced the whole gasket?

 

I'm not sure, but I doubt it. I feel like I keep getting a run-around. The Ford dealer I bought it from wouldn't begin to touch ut, and I've had it 2 times to the same Chevy dealer; the first time, it made it almost 3 months, the next 2 days. Had it to another Chevy dealer today, they said they don't have anyone certified in that repair.

 

It leaks down the right hand winshield pillar, and drips onto the passenger seat. I made it do it a week ago, in a carwash, just to be sure about my facts.

 

I'm not sure about your malibu and proportions - but if it was me - I would take a garden hose - and spray water on the front windshield and make sure NOTHING leaks there... just keep the sunroof dry.
Let the water run down, etc.

Maybe also test the passenger side of the car... try to run the water down any rail - why keeping the sunroof dry... eliminate the sunroof (or else prove it is coming from there)..

 

I have already done that. The leak is on the right front corner of the sunroof somewhere. It will drip from the point where the headliner and the door pillar meet, enough to fill the floor pan in the front passenger area.