Send me your VIN number and I'll look up the build history.
Band button does NOT mean the radio is XM capable. Even non-XM radios have at least two FM bands and one AM band to scroll through.Have had a few examples in the past year or two on some of the company cars; last one was in a trailblazer. Band button, but NO XM.
The Duramax truck I was driving last week, had XM, but not turned on, and when I went through the bands and stopped at XM, I was on channel 1, the only one offered, and it was the basic XM advertisement. Call this number and subscribe, etc.
Possibly, these are XM capable, and they don't display the XM info due to no module installed, and they will show XM with a module and a tweak from the tech 2.
As for H2s only coming with XM capable radios, I can't answer that one. I would have assumed it did only come with XM, but after driving a fully loaded trailblazer, with no XM, I'm not sure of anything anymore.
