H1 electrical trouble! Please help me!
i'd send you diagrams but mine is for a 1998 and the wiring and engine is completly different in a 2006 alpha because its the 6.6L duramax diesel not the 6.5l turbo.
but you might have some luck here:
http://www.hummerinfodatabase.com
but you might have some luck here:
http://www.hummerinfodatabase.com
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