[ChevyHighPerformance]

I chased that sound for about 4 weeks. I put foam rubber pads underneath the A piller trim. I lubed the draintube. The drain tube was taped to clamps along the A piller and was off in one spot. I used a wiretie to reclamp the drain tube to the clamp. I did a bunch of things at once before the sound went away. It wasn't scientific, but the sound was killing me.