xm antenna removal
 

this is for grand am gt owners. I am getting annoyed of the black blob sitting on the roof of my car and im not going to ever use xm radio. how is this removed? is there a hole under it where they drilled to run wiring? any info on this would be great. the thread i found on gagt did not get me anywhere and I have not found anything online about the subject. any help would be appricated.