I toyed with the idea of doing the install myself, but my dealer said they'd do it for $130 so I went that route.
They're the same system that Hummer was using during their holiday promotion. While the units are branded as GM, its actually made by Invision.
http://www.invisionindustries.com/products.html
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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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