Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000mi.Have underbody flushing service performed. See "Underbody Maintenance" inExterior Care.
Power Mode Description and Operation
GMLAN and Media Oriented Systems Transport (MOST) Wiring RepairsOil Filter Adapter Removal Engine Lubrication Oil Filter
Remove and properly dispose of the oil filter.Remove the oil filter adapter bolts from the engineblock.Remove the oil filter adapter.Remove and discard the oil filter adapter gasket. ...