Engine Block Plug Removal

Tools Required 

J 41712  Oil Pressure Switch Socket

Fig 1: Removing & Installing Oil Pressure Sensor Using J 41712
Courtesy of GENERAL MOTORS CORP.
1. Remove the oil pressure sensor using J 41712  (1).
Fig 2: View Of Camshaft Rear Bearing Hole Plug
Courtesy of GENERAL MOTORS CORP.
2. Remove the camshaft rear bearing hole plug:
   1. Obtain a suitable self-threading screw.
   2. Drill a hole into the plug.
   3. Install the self-threading screw.
   4. Pull on the plug until it has left the bore.
   IMPORTANT: Use care not to damage the camshaft bearings.
   5. An alternate method to remove the plug would be to insert a long shaft or bar through the front of the engine and drive the plug from the bore.
Fig 3: View Of Left Side Knock Sensor Heat Shield
Courtesy of GENERAL MOTORS CORP.
3. Remove the left side knock sensor heat shield bolts.
4. Remove the left side knock sensor heat shield.
Fig 4: View Of Left Side Knock Sensor
Courtesy of GENERAL MOTORS CORP.
5. Remove the left side knock sensor.
Fig 5: View Of Right Side Knock Sensor, Heat Shield & Bolts
Courtesy of GENERAL MOTORS CORP.
6. Remove the right side knock sensor heat shield (720) and bolts (721).
7. Remove the right side knock sensor (719).
Fig 6: View Of Engine Block Oil Cooler Hose Fittings
Courtesy of GENERAL MOTORS CORP.
8. Remove the engine block oil cooler hose fittings.
Fig 7: View Of Rear Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
9. Remove the rear oil gallery plugs.
Fig 8: View Of Front Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
10. Remove the front oil gallery plugs.
Fig 9: View Of Engine Block Left Oil Gallery Plug
Courtesy of GENERAL MOTORS CORP.
11. Remove the left side oil gallery plug.
Fig 10: View Of Top Oil Gallery Plugs
Courtesy of GENERAL MOTORS CORP.
12. Remove the top oil gallery plugs.
Fig 11: View Of Engine Coolant Drain Hole Plug
Courtesy of GENERAL MOTORS CORP.
13. Remove the engine coolant drain hole plug.
Fig 12: View Of Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.
14. Remove the engine block coolant heater, if equipped.