OnStar Services
See also:
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to
check tire pressure levels. The TPMS sensors monitor the air pressure in your
tires and transmit tire pressure readings to ...
Turn Signals When Towing a Trailer
The turn signal indicators on the instrument panel flash whenever signaling
a turn or lane change.
Properly hooked up, the trailer lamps also flash, telling other drivers the
vehicle is turning, ...
Transmission Messages
DIFFERENTIAL HOT, REDUCE
SPEED (CTS-V ONLY)
This message displays and a
chime sounds if the differential
fluid temperature exceeds 150°C
(300°F). Driving aggressively or
at high speeds can ...






