Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems.
It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
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height=17 id="_x0000_i1807" src="images/books/1183/10/index.2.gif" border=0>, and an
Advisor can run a check.
See also:
Time Shifting (Radio with CD/DVD and MEM)
The radio with the MEM time shift feature can rewind 20 minutes of XM
content. While listening to the radio, the content from the current channel is
always being buffered.
Press to pause t ...
Brake Assist
(Except CTS-V)
This vehicle has a brake assist
feature designed to assist the
driver in stopping or decreasing
vehicle speed in emergency driving
conditions. This feature uses the
stability system hydrauli ...
Ashtrays
The vehicle may have two
removable ashtrays. One ashtray
can be placed into the instrument
panel storage compartment and the
other into the center console rear
compartment.
To empty the ash ...