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 Replacement
Special ToolsJ-38185Hose Clamp PliersFor equivalent regional tools, refer toSpecial Tools.Removal ProcedureRelieve the fuel pressure. Refer toFuel Pressure Relief.Remove negative battery cable from engine block. Refer toBattery Negative Cable ReplacementDisconnect the negative battery cable. Refer t ...