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:
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention
away from the road. Many local ...
Auto Reroute
When a destination is set but is off the planned route, the system automatically
plans a new route and begins to reroute. The new route is highlighted on the screen. ...
Language — English/Metric
To change the language of the navigation screens or to change the navigation
screens from English or metric, see Driver Information Center (DIC)
for more information. ...