Hyundai Elantra Radio Replace/Remove

I Have The Car Listed Above Se And The Battery Completely Drained. So Replaced The Battery And Now It Says That The Antenna Is Disconnected...

I Have Xm Radio In My Car And For The First Time Ever It Changed Stations On Its Own. Is This A Satellite Issue Or Could It Be The Radio? It...

If You Can Send Me Steps On Taking Out The Stock Radio. I Purchased A Dual Cd Deck From Walmart For My Car. I Also Purchased 18-gauge Wiring...