Engine Block Plug Removal

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Remove the engine block coolant heater (114) and seal (115).
Courtesy of GENERAL MOTORS COMPANY

Remove the engine block right rear coolant drain hole plug and seal.
Courtesy of GENERAL MOTORS COMPANY

Remove the engine block left front oil gallery plug (116) and seal (117).
Courtesy of GENERAL MOTORS COMPANY

Remove the engine block left rear oil gallery plug (112) and seal (113).

If the block plug and coolant heater sealing washers are not damaged, they may be used during assembly.
Courtesy of GENERAL MOTORS COMPANY

Remove the engine block rear oil gallery plug (111) and seal.
Inspect the O- Ring seal of the rear oil gallery plug.
If the O- Ring seal is not cut or damaged, the plug and O- Ring seal may be used during assembly.
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Remove the front oil gallery plug, only if service is required. If the front oil gallery plug is removed, a NEW oil gallery plug must be installed.

Remove the engine block front oil gallery plug (101).
Courtesy of GENERAL MOTORS COMPANY

Remove the left side knock sensor (718) and bolt (739).
Courtesy of GENERAL MOTORS COMPANY

Remove the right side knock sensor (718) and bolt (739).