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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Advisor can run a check.
See also:
If the Off Indicator is Lit for an Adult-Size Occupant
If a person of adult-size is sitting
in the front outboard passenger
seat, but the off indicator is lit,
it could be because that person
is not sitting properly in the seat.
If this happens ...
Cadillac CTS-V Review
In an effort to take advantage of its recent return to popularity, Cadillac decided to build high-performance versions of several of its cars. Collectively called the V-Series, they are meant to be ...
Dual Tone Multi-Frequency (DTMF) Tones
The in—vehicle Bluetooth system can send numbers during a call. This is used
when calling a menu—driven phone system.
1. Turn or press the MENU/ SELECT knob and select Enter Number.
2. Enter the ...