Driving On Grades
Reduce speed and shift to a lower gear before you start down a long or steep downgrade. If you don’t shift down, you might have to use your brakes so much that they would get hot and no longer work well.
You can tow in DRIVE (D). You may want to shift the transmission to THIRD (3) or a lower gear, under heavy loads or hilly conditions.
When towing at high altitude on steep uphill grades, consider the following: Engine coolant will boil at a lower temperature than at normal altitudes. If you turn your engine off immediately after towing at high altitude on steep uphill grades, your vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked (preferably on level ground) with the automatic transmission in PARK (P) for a few minutes before turning the engine off. If you do get the overheat warning.
See also:
Clock
The infotainment system controls are used to access the time and date settings
through the menu system. The clock menu can be only be used with the radio on while
in ON/RUN or ACC/ACCESSORY.
See ...
Automatic Dimming Rearview Mirror
On vehicles with an automatic
dimming inside rearview mirror the
automatic dimming reduces the
glare from the headlamps of the
vehicle behind you.
Vehicles with OnStar have three
control bu ...
Outside Automatic Dimming Mirror
If the vehicle has this feature, the driver side mirror
adjusts for the glare of headlamps behind you. This
feature is controlled by the on and off settings on the
automatic dimming rearview mir ...
