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 
, and an" width=19
height=17 id="_x0000_i1807" src="images/books/1183/10/index.2.gif" border=0>, and an
Advisor can run a check.
See also:
AVG (Average) Economy
Displays the approximate average
liters per 100 kilometers (L/100 km)
or miles per gallon (mpg). The
calculation is based on the number
of L/100 km (mpg) recorded since
the last time this di ...
Traction Control System (TCS)
The traction control system limits wheel spin. The system is on when the
vehicle is started.
- To turn off traction control, press and release located on the console.
illuminates and the a ...
Finish Damage
Quickly repair minor chips and
scratches with touch-up materials
available from your dealer to avoid
corrosion. Larger areas of finish
damage can be corrected in your
dealer's body and paint ...