Three-Way Calling
Three-Way Calling must be supported on the cell phone and enabled by the wireless service carrier to work.
1. While on a call press 
.
2. Say “Three-way call.” 3. Use the dial or call command to dial the number of the third party to call.
4. Once the call is connected,
press to link all callers
together.
See also:
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
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That Thing Got a Supercharger?
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Customer Satisfaction Procedure (U.S. and Canada)
Your satisfaction and goodwill are important to your dealer and to Cadillac.
Normally, any concerns with the sales transaction or the operation of the
vehicle will be resolved by your dealer's sales ...