Three—Way Calling
Three—way calling must be supported on the cell phone and enabled by the wireless service carrier.
1. While on a call, press ." width=43 height=18 id="_x0000_i1565"
src="images/books/1183/4/index.65.gif" border=0>.
2. Say “Three—way call.” 3. Use the dial or call command to dial the number of the third party to be called.
4. Once the call is connected, press 
to link all callers" width=43 height=18
id="_x0000_i1566" src="images/books/1183/4/index.65.gif" border=0>to link all callers
together.
See also:
Battery Power Protection
This feature shuts off the dome lamps if they are left on for more than 10 minutes
when the ignition is in LOCK/OFF. This helps to prevent the battery from running
down. ...
Canceling Guidance
Guidance is canceled once the final destination is reached. To cancel guidance
prior to arrival at the final destination:
1. Press DEST.
2. Press Cancel Guidance.
3. Press OK to confirm.
Guidanc ...
Potential Issues
Some OnStar services are disabled
after five days. OnStar cannot
perform Remote Door Unlock or
Stolen Vehicle Assistance after the
vehicle has been off continuously
for five days. After five ...