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:
Backglass Antenna
The AM-FM antenna is integrated
with the rear window defogger,
located in the rear window.
Make sure that the inside surface of
the rear window is not scratched
and that the lines on the glas ...
Windows
WARNING
Leaving children, helpless adults, or pets in a vehicle with the windows closed
is dangerous. They can be overcome by the extreme heat and suffer permanent injuries
or even death fro ...
Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between
tread shoulder and maximum section width.
For example:
Treadwear 200 Traction AA
Temperature A
The following info ...