Cylinder Block Plug Installation

NOTE
The importance of cleanliness during assembly cannot be overstated. Dirt or debris will cause engine damage. An automobile engine is a combination of many machined, honed, polished and lapped surfaces with tolerances that are measured in ten thousandths of an inch. When any internal engine parts are serviced, care and cleanliness are important. A liberal coating of engine oil should be applied to friction areas during assembly in order to protect and lubricate the surfaces on initial operation. Throughout this section, it should be understood that proper cleaning and protection of machined surfaces and friction areas are part of the repair procedure. This is considered standard shop practice even if not specifically stated. Lubricate all moving parts with engine oil or a specified assembly lubricant. This will provide lubrication for initial start up.

1. Install the engine block coolant drain plugs.
^ Apply gasket paste GM P/N 1050026, or equivalent to the plugs before installation
^ Tighten Coolant Jacket Plugs to 15 Nm (11 ft. lbs.).
2. Install the cooling jacket core plugs.
3. Apply gasket paste GM P/N 1050026, or equivalent to the plugs before installation
4. Drive the plugs into the block until they are flush using a drift that closely matches the inside diameter of the plug.