Welcome H2crazy:
This has been discussed some with no clear resolution. I would love to tear out On-Star all together as I never used it in the first free-year period, and they want a "rip-off" rate to keep it going/use there cell phone feature.
The slot in the dash would be a useful storage area, and it would be nice to utilize my portable cell phone, hands free as well. Good luck and let us know what you can find out.
I wish they would start a program to allow it to be used on a pay/use system. Then if I needed it it would be there....but I am just one to rarely if ever need such a service. OnStar/GM are you listening???....probably not for something that might save the consumer a buck or two!
Ric
OMAHOG/IHOG
Hum2@cox.net