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 RepairsCrankshaft Front Oil Seal Installation Engine Block Seals and Gaskets
Special ToolsEN-35268-ACamshaft/Front Main Seal InstallerFor equivalent regional tools, refer toSpecial Tools.Install the seal-(2) into the front cover usingtheEN-35268-Ainstaller-(1).Ensure that the engine front cover is properly supported wheninstalling the seal. ...