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 (ManualMode) is recommended. Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions.
For vehicles with a manual transmission, it is better not to use the highest gear.
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. For vehicles with manual transmissions, let the engine run while parked, preferably on level ground, with the transmission out of gear and the parking brake applied, for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating.
See also:
Auto Door Lock
This feature allows you to select
when the vehicle's doors will
automatically lock. See Automatic
Door Locks for more
information.
Press the customization button until
Auto Door Lock appear ...
Tires
Every new GM vehicle has high-quality tires made by a leading tire
manufacturer.
See the warranty manual for information regarding the tire warranty and
where to get service. For additional infor ...
Off-Road Recovery
The vehicle's right wheels can
drop off the edge of a road onto
the shoulder while driving.
Follow these tips:
1. Ease off the accelerator and
then, if there is nothing in the
way, steer t ...