Moderator - Don't know if my previous reply went out. It made me sign in before it sent. If it did, just delete this one. Thanks.
After reading deep into this forum found someone with the same problem...it was the S-Band fuse #56. Pulled the 10 amp fuse. Replaced with another 10 amp which immediately blew. Made a mistake. Had no more 10s. Thought I would try a 15 and it held. OnStar and XM came back. Then I smelled something getting hot and heard a small crackling sound. Pulled the 15 quickly. I don't really want to trouble-shoot a wiring issue. Even with ramps the car is hard to get under and have enough room to work. XM has offered me an Onyx, but really wanted to keep everything original. Good repair shop near me, but you know how that goes. Hoping my Solstice doesn't combust. Thank you guys for the help.