When OnStar (from GM) was announced some years back, it was said to
> operate on the analog cell phone network. GM claims that since 2004,
> they started using Digital/Analog radios. So it seems there's a large
> fleet of cars out there that will be crippled with the coming death of
> analog cell phone service.
Yep. But GM is offering a free upgrade if you sign a 3 year contract: Other manufacturers may be offering similar deals. Details at
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Q8: If my GM vehicle is capable of being upgraded, what is the process for having upgrade equipment installed?
A8: Digital upgrade kits are now available for some GM vehicles. Upgrades for these vehicles will be provided to OnStar subscribers at no charge with the purchase of a nonrefundable, 3-year OnStar subscription. To arrange for an upgrade or obtain more information on digital equipment upgrades, please contact your local GM dealership or call OnStar toll-free at 1.888.206.0031.
Interestingly, OnStar units from before 2000 used a handset style cell phone and cannot be upgraded.