Multi-Band Antenna
The antenna located on the roof of the vehicle is used for the OnStar, XM Satellite Radio Service System, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
If the vehicle has a sunroof and it is open, the performance of OnStar, XM, and GPS can be affected.
See also:
Shifting out of Park
This vehicle is equipped with an automatic transmission shift lock control
system. The shift lock control is designed to prevent movement of the shift
lever out of P (Park), unless the ignition is i ...
PARK BRAKE RELEASED
For vehicles with the electric parking
brake, this message displays
when the parking brake has been
released from the set position.
See the electric parking brake
information under Parking Br ...
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. ...