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:
How the System Works
The LDW camera sensor is on the windshield ahead of the rearview mirror.
To turn LDW on and off, press the LANE DEPART control on the steering wheel.
The control indicator will light when LDW is ...
Tire Pressure
Tires need the correct amount of air pressure to operate effectively.
Notice: Neither tire underinflation nor overinflation is good.
Underinflated tires, or tires that do not have enough air, can re ...
Headlamp High/Low-Beam Changer
Headlamp High/Low&-Beam Changer:
Push the turn signal/lane change lever away from you and release, to turn the high
beams on. To return to low beams, push the lever again or pull it toward yo ...