Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception.
Cellular reception is required for OnStar to send remote signals to the vehicle.
See also:
Automatic Dimming Mirror
The vehicle has an automatic dimming mirror. The driver outside mirror automatically
adjusts for the glare of headlamps behind you. This feature is controlled by the
on and off setting on the insi ...
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.
Calling for Service
When callin ...
Ride & Handling
Our test CTS had the optional performance suspension, and the car felt as
firm as one of the high-performance V-Series versions that Cadillac sells, with
harsh, jarring responses over bumps. It's ...