Unable to Connect to OnStar Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push 
to try the
call again or try again after driving a
few miles into another cellular area.
See also:
Delayed Door Lock
When on, this feature will delay the locking of the doors until five seconds
after the last door is closed. You will hear three chimes to signal delayed
locking is in use.
Pressing either the pow ...
Roadside Service
(U.S. and Canada)
U.S.: 1-800-224-1400
Canada: 1-800-882-1112.
Text Telephone (TTY) Users
(U.S. Only): 1-888-889-2438.
Service is available 24 hours a day,
365 days a year. ...
Vehicle Speed Messages
SELECTED SPEED LIMIT EXCEEDED
This message is displayed when the vehicle speed is greater than the set
speed. See "Speed Warning" under Driver Information Center (DIC). ...