Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push 
to try the call again or try again after driving a few miles into another cellular area.
See also:
Steering Wheel Controls
Steering Wheel Controls
or
: Press to change favorite radio stations, select tracks on a CD/DVD, or navigate tracks or folders on an iPod® or USB device.
: Press to silence the vehicle speake ...
Battery Load Management
The vehicle has Electric Power Management (EPM) that estimates the battery's temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery.
When t ...
Owner Checks and Services
At Each Fuel Stop
○ Check the engine oil level. See Engine Oil on page 10‑10.
Once a Month
○ Check the tire inflation pressures. See Tire Pressure on page 10‑51.
○ In ...