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 RepairsEngine Block Cleaning and Inspection Engine Block
Special ToolsEN-8087Cylinder Bore GaugeGE-7872Magnetic Base Dial IndicatorFor equivalent regional tools, refer toSpecial Tools.Clean the sealing material from the gasket matingsurfaces-(2) with a suitable tool-(1).Clean the engine block and lower crankcase in a cleaning tankwith solvent appropriate ...