The importance of cleanliness during assembly cannot beoverstated. Dirt or debris will cause engine damage. An automobileengine is a combination of many machined, honed, polished andlapped surfaces with tolerances that are measured in tenthousandths of an inch. When any internal engine parts areserviced, care and cleanliness are important. A liberal coating ofengine oil should be applied to friction areas during assembly inorder to protect and lubricate the surfaces on initial operation.Throughout this section, it should be understood that propercleaning and protection of machined surfaces and friction areas arepart of the repair procedure. This is considered standard shoppractice even if not specifically stated.
Lubricate all moving parts with engine oil or a specifiedassembly lubricant. This will provide lubrication for initial startup.
Engine Component Description (LFX)
Starting System Description and Operation Starting SystemGM Oil Life System Resetting
When the system has calculated that oil life has beendiminished, it will indicate that an oil change is necessary. ACHANGE ENGINE OIL light will come on. Change the engine oil as soonas possible within the next 1-000-km(600-miles). It is possible that, if driving under thebest conditions, the oil li ...