Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips include:
| Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking. Shift the transmission to a lower gear to let the engine assist the brakes on a steep downhill slope. |
| Warning Coasting downhill in N (Neutral) or with the ignition off is dangerous. This can cause overheating of the brakes and loss of steering. Always have the engine running and the vehicle in gear. |
Driving on Wet Roads
Winter DrivingSelecting the Right Engine Oil
(Diesel Engines)
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade:
Specification
Ask for and use engine oils that
meet the dexos2 specification.
Engine oils that have been
approved by GM as meeting the
dexos2 specification are marked
with the dexos2 approved ...