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:
Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between
tread shoulder and maximum section width.
For example:
Treadwear 200 Traction AA
Temperature A
The following info ...
Trailer Towing
(CTS-V and Coupe)
The vehicle is neither designed nor
intended to tow a trailer. ...
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
- Signs of wear may include
steering wheel vibration,
bounce/sway while braking,
longer stopping distance,
or uneven tire wear.
- ...