VCIU is in the truck behind the seat. I don't think that you can change that model to digital if has onstar with an RPO code UE1.
Vehicles with this equipment will no longer be able to receive OnStar services beginning January 1, 2008. At that time, service will be available only through Dual-Mode (Analog / Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.
Cly
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Monday, September 3rd, 2007 AT 7:08 PM