2000 Bonneville SE
There is something flopping around behind the plastic cover on the right-rear roof pillar of the car. I can pry the cover back some, but don't want to break anything. Is there a trick to removing the plastic cover?

Bump

It appears there is a push-in retainer at the bottom of that panel that you may have to remove the rear shelf cover (where the speakers are) to get to.

Thanks - I'll dig in after halloween :)