Using Cruise Control on Hills
How well the cruise control works on hills depends upon the vehicle speed, load, and the steepness of the hills. When going up steep hills, you might have to step on the accelerator pedal to maintain the vehicle speed. When going downhill, the vehicle may automatically shift to a lower gear to keep the vehicle's speed down.
The vehicle may then shift to a higher gear when braking assistance is no longer required.
When the brakes are applied manually the cruise control is disengaged.
See also:
Map Adjustments
The system lets you adjust the scale of view on the map. Also, as you drive,
the map scrolls automatically based on the direction of travel. ...
Lamp Messages
AFL (ADAPTIVE FORWARD LIGHTING) LAMPS NEED SERVICE
This message displays when the Adaptive Forward Lighting (AFL) system is
disabled and needs service. See your dealer.
See Adaptive Forward Lig ...
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 v ...