The tires and wheels were aligned and balanced at the factory to provide the longesttire life and best overall performance. Adjustments to wheel alignment and tire balancingare not necessary on a regular basis. Consider an alignment check if there is unusualtire wear or the vehicle is significantly pulling to one side or the other. Some slightpull to the left or right, depending on the crown of the road and/or other road surfacevariationssuch as troughs or ruts, is normal. If the vehicle is vibrating when driving on asmooth road, the tires and wheels may need to be rebalanced. See your dealer for properdiagnosis.
Tread Wear Indicators Description Wheels
Tire and Wheel InspectionSelecting 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 ...