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:
XM NavTraffic (USA and Canada)
Vehicles with the navigation system have an XM NavTraffic receiver. XM NavTraffic
is a subscription service provided via XM Satellite Radio. XM NavTraffic provides
real-time traffic information fu ...
Keyless Trunk/Liftgate Opening
Press the trunk/liftgate release
button located above the license
plate to open the trunk/liftgate if the
keyless access transmitter is within
range. See Trunk (Sedan, Coupe) for additional
...
Windshield and Wiper Blades
Clean the outside of the windshield with glass cleaner.
Clean rubber blades using lint-free cloth or paper towel soaked with windshield
washer fluid or a mild detergent. Wash the windshield thoroug ...