When they installed the NAV into my rig I told them I wanted my factory gps (onstar / and xm antenna used.. It looks like they didnt use either .. xm reception went out the window.
Was wondering if I can go in and insist they use the factory ones... before i go in I want to see if its even possible..
Thoughts?
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07 H2 SUT Glacier Blue - Limited Edition 
08 H3 ALPHA Carbon Black
Dear GM: PLEASE SELL ME AN HX
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