Each OEM radio in the H3 is XM ready, the question is whether an XM receiver is actually installed (like the one in your link) in your rig. Do what Mike E suggests to find out.
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H3 Boulder Gray - 2006 Adventure|CD-MP3|XM|Roof Marker Lights|Husky Front Mudflaps|Brush Guard|Rocker Bars|UC Protection|U-Steps|Garmin GPS|Garvin Roof Rack|DVD Headrests|
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