FixVault

Engine Block Plug Removal

Tools Required 

J 41712  Oil Pressure Switch Socket

  1. Remove the knock sensor retaining bolt (1).
  2. Remove the knock sensor (2).
    Fig 1: Knock Sensor
    G02502835Courtesy of GENERAL MOTORS CORP.
  3. Remove the engine oil pressure gage sensor using the J 41712. 
    Fig 2: Engine Oil Pressure Gage Sensor
    G02502836Courtesy of GENERAL MOTORS CORP.
  4. Remove the engine oil pressure sensor fitting.
    Fig 3: Engine Oil Pressure Sensor Fitting
    G02502837Courtesy of GENERAL MOTORS CORP.
  5. Remove the transmission locator dowel straight pins, if required.
    Fig 4: Transmission Locator Dowel Straight Pins
    G02502838Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine block left side oil gallery plug.
  7. Remove the engine block left rear oil gallery plug.
  8. Remove the engine block right rear oil gallery plug.
    Fig 5: Engine Block Oil Gallery Plug
    G02502839Courtesy of GENERAL MOTORS CORP.
  9. Remove the expansion cup plug from the camshaft rear bearing hole and discard.
    Fig 6: Camshaft Rear Bearing Hole Expansion Cup Plug
    G02502840Courtesy of GENERAL MOTORS CORP.
  10. Remove the expansion cup plug from the balance shaft rear bearing hole and discard.
    Fig 7: Balance Shaft Rear Expansion Cup Plug
    G02502841Courtesy of GENERAL MOTORS CORP.
  11. Remove the crankshaft rear oil seal housing locator spring type S pin, if required.
    Fig 8: Crankshaft Rear Oil Seal Housing Locator Spring Type S Pin
    G02502842Courtesy of GENERAL MOTORS CORP.
  12. Remove the front oil gallery plugs or balls from the front of the engine block and discard. Insert a 3/8 x 26 inch rod into the rear oil gallery holes in order to drive out the front oil gallery plugs or balls.
    Fig 9: Front Oil Gallery Plugs Or Balls
    G02502843Courtesy of GENERAL MOTORS CORP.
  13. Remove the engine block core hole plugs.
    1. 13.1. Use a suitable tool in order to drive the engine block core hole plugs into the coolant jacket.
    2. 13.2. Use a suitable tool in order to pull the engine block core hole plugs from the coolant jacket.
    3. 13.3. Discard the engine block core hole plugs.
      Fig 10: Engine Block Core Hole Plugs
      G02502844Courtesy of GENERAL MOTORS CORP.
  14. Remove the oil filter bypass valve and discard.
    Fig 11: Oil Filter Bypass Valve
    G02502845Courtesy of GENERAL MOTORS CORP.