You're lucky if you can find a workaround for the lack of phone service. All I'm told in Dallas (for well over a year, with respect to my '03 Avalanche) is that OnStar has not been able to make a deal with a local carrier. You'd think with Sprint, AT&T, Verizon, Cingular, NexTel, etc. all available here, there'd be some way to arrange service. Rather inexplicable lack of service, it seems to me.