Verify Minutes and Expiration
Push 
and say “minutes” then “verify” to check how many minutes remain and their expiration date.
See also:
Jump Starting
For more information about the vehicle battery, see Battery on page 10‑25.
If the vehicle's battery has run down, you may want to use another vehicle and some jumper cables to start your vehicl ...
Using Voice Commands During a Planned Route
Cancel Route
1. Push . System responds:
“OnStar ready,” then a tone. Say “Cancel route.” System responds: “Would you like to cancel route directions to your destination?” 2. Say “Yes. ...
Trademarks and License Agreements
Manufactured under license under U.S. Patent #'s: 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,487,535 & other U.S. and worldwide patents issued & pending. DTS and the Symbol are registered ...