Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them.
To mute a call, press 
and
then say “Mute Call.”
To cancel mute, press and
then say “Un-mute Call.”
See also:
Reporting Safety Defects
to General Motors
In addition to notifying NHTSA
(or Transport Canada) in a situation
like this, notify General Motors.
Call 1-800-458-8006, or write:
Cadillac Customer
Assistance Center
Cadillac Motor Car Divi ...
Speedometer
Displays a digital speedometer in
the DIC. The speed displays in
either kilometers per hour (km/h) or
miles per hour (mph). To change
the units from English to metric,
see “Units” later in t ...
Radio Message
Locked: Displays when the
TheftLock® system has locked up
the infotainment system. Take the
vehicle to your dealer for service.
If any error occurs repeatedly or if
an error cannot be correct ...