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 RepairsPiston, Connecting Rod, and Bearing Removal Engine Block Cylinder Block Piston Assembly
Special ToolsEN 46121Connecting Rod Guide Pin SetFor equivalent regional tools, refer toSpecial Tools.Note:An arrow/dot showing proper piston orientation is located onthe top of the piston.If the connecting rod bearings have been used in a runningengine, you must replace them with NEW connecting rod ...