Thread: Digital Onstar Upgrade?
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  #4  
Old 03-12-2006, 08:15 PM
Vt Hummer Vt Hummer is offline
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Join Date: Sep 2005
Location: Jericho, vt
Posts: 102
Vt Hummer is off the scale
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Yes, I did. You have to call onstar to see if yours ais able to be upgraded. Then you go into the dealer and explain to them what you are tring to do. There is a TSB out. The upgrade was free if you bought a 3 year block of onstar.
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