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:
Control Buttons
The buttons used to control the XM radio are:
RADIO/BAND: Press to turn the radio on and choose between AM, FM, and XM, if
equipped.
SEEK / SEEK: Press to go to the previous or next
channel.
...
Engine Speed Limiter
This feature prevents the engine
speed from reaching an unsafe
level. If the level is too high, the
throttle closes or limits the fuel
supply until the engine speed
returns to a safe level. ...
The Inside
If I had to drive forever in the Escalade's optional heated and cooled seats,
I don't think I could complain. Why every luxury car doesn't come with
ventilation is a mystery. On a hot hour-long ri ...