Driving On Grades
Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and no longer work well.
Vehicles with an automatic transmission can tow in D (Drive) but M (Manual Mode) is recommended. Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/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 the engine is turned off immediately after towing at high altitude on steep uphill grades, the 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 P (Park) for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating .
See also:
Driving Characteristics and Towing Tips
WARNING!
The driver can lose control when
pulling a trailer if the correct
equipment is not used or the
vehicle is not driven properly. For
example, if the trailer is too
heavy, the brakes ...
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants for GM
approved fluids.
• Engine oil and windshield
washer ...
New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in. But it will perform
better in the long run if you follow these guidelines:
Do not drive at any one constant speed, fast or slow, for the ...
