hi guys i would like to first start off by saying I have just bought my 2009 GMC sierra tonight and couldn't be more excited. now i have used the search button on this topic but wasn't able to come up with a definitive answer. like the title says i would like to have a I pod adapter for my factory H/U. i seen that there was one thread on a $10 solution and others with adapters behind attaching to the xm radio. my confusion is which one to buy? how exactly its hooked up? anyone have any experience with this themselves?