Unable to Connect to OnStar Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push 
to try the
call again or try again after driving a
few miles into another cellular area.
See also:
Tire Designations
Tire Size
The example shows a typical passenger vehicle tire size.
Passenger (P-Metric) Tire
(A) Passenger (P-Metric) Tire: The United States version of a metric tire sizing
system. The letter ...
Introduction
The names, logos, emblems,
slogans, vehicle model names, and
vehicle body designs appearing in
this manual including, but not limited
to, GM, the GM logo, CADILLAC,
the CADILLAC Crest and ...
SERVICE TIRE MONITOR
SYSTEM
This message displays if a part on
the Tire Pressure Monitor System
(TPMS) is not working properly.
The tire pressure light also flashes
and then remains on during the
same ignition cycle. Se ...