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:
Event Data Recorders
This vehicle has an Event Data Recorder (EDR). The main purpose of an EDR is
to record, in certain crash or near crash-like situations, such as an airbag deployment
or hitting a road obstacle, dat ...
Exterior
The 2007 Escalade EXT is roughly the same size as its predecessor, losing 1.5
inches of height but gaining an inch of length. Cargo room is up, with a rear
cargo bed that has 45.5 cubic feet of vo ...
Global Positioning System (GPS)
The navigation system determines the position of the vehicle by using satellite
signals, various vehicle signals, and map data.
At times, other interferences such as the satellite condition, road c ...