My 2006 Cobalt LS is having some serious AC drain issues. I have blown the drain out numerous times, removed the entire dashboard at least 3 times, and made sure the drain is secured to (with no cracks), the HVAC box. I thought I had read someplace that there may be another seal someplace that would leak water, and not the cabin air filter flap. But can no longer find that post. PLEASE point me in a direction to solve my Lake Cobalt problem!!! It's really the only issue I have ever had in 170K+ miles!