A non-H2 GM dealer will have access to the H2 manuals, but probably no experience in-house on the H2 and likely no "H2-unique" parts on hand (even though they can order). However, as you know, the engine is standard GM.
I would call the prospective GM dealer and ask them what they are willing to handle.
Jim
Red H2
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Jim
2003 H2 Metallic Red (now gone)
2008 H3 Graphite Lux
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