OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Starting the Engine
Automatic Transmission
Move the shift lever to P (Park) or N (Neutral). The engine will not start in
any other position. To restart the engine when the vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the vehicle is moving. If you
do, you could dam ...
Cooling System
The cooling system allows the engine to maintain the correct working temperature.
Engine Coolant Surge Tank and Pressure Cap
Engine Cooling Fan (Out of View)
Warning
An electric engine cooling fan under the hood can start up
even when the engine is not running and can cause injur ...
Pictures and Movies (Movie System)
The infotainment system can play movie files stored on a USB storage device and
devices that support Media Transfer Protocol (MTP).
Movie System Information
Caution for Using Movie Files
Available resolution: Within 720 x 576 (W x H) pixels.
Frame rate: Less than 30 fps.
Playable movie f ...