My 2004 Pacifica is having the exact same issue. I was told by my local dealership it was possibly shrinkage from the heat of the sun. I asked how I could fix and they stated I would have to replace an entire section of the dashboard which would cost me gobs of money. So I gave up on the effort. What I would like to know is what does one do if the airbag deploys on the passenger side? Do you have to replace the dash in that case to? Seems like a very bad design if this is the case.