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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 995 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Engine Block Plug Removal

Engine Block Plug Removal

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

J 41712  Oil Pressure Switch Socket

  1. Remove the oil pressure sensor using J 41712  (1).
    2. Fig 1: Removing & Installing Oil Pressure Sensor Using J 41712
    GM1310000Courtesy 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.
      5. 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.
    3. Fig 2: View Of Camshaft Rear Bearing Hole Plug
    GM471118Courtesy of GENERAL MOTORS CORP.
  3. Remove the left side knock sensor heat shield bolts.
  4. Remove the left side knock sensor heat shield.
    5. Fig 3: View Of Left Side Knock Sensor Heat Shield
    GM471100Courtesy of GENERAL MOTORS CORP.
  5. Remove the left side knock sensor.
    6. Fig 4: View Of Left Side Knock Sensor
    GM471081Courtesy 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).
    8. Fig 5: View Of Right Side Knock Sensor, Heat Shield & Bolts
    GM1310044Courtesy of GENERAL MOTORS CORP.
  8. Remove the engine block oil cooler hose fittings.
    9. Fig 6: View Of Engine Block Oil Cooler Hose Fittings
    GM471126Courtesy of GENERAL MOTORS CORP.
  9. Remove the rear oil gallery plugs.
    10. Fig 7: View Of Rear Oil Gallery Plugs
    GM471134Courtesy of GENERAL MOTORS CORP.
  10. Remove the front oil gallery plugs.
    11. Fig 8: View Of Front Oil Gallery Plugs
    GM471133Courtesy of GENERAL MOTORS CORP.
  11. Remove the left side oil gallery plug.
    12. Fig 9: View Of Engine Block Left Oil Gallery Plug
    GM471138Courtesy of GENERAL MOTORS CORP.
  12. Remove the top oil gallery plugs.
    13. Fig 10: View Of Top Oil Gallery Plugs
    GM471137Courtesy of GENERAL MOTORS CORP.
  13. Remove the engine coolant drain hole plug.
    14. Fig 11: View Of Engine Coolant Drain Hole Plug
    GM635657Courtesy of GENERAL MOTORS CORP.
    Fig 12: View Of Engine Block Coolant Heater
    GM635660Courtesy of GENERAL MOTORS CORP.
  14. Remove the engine block coolant heater, if equipped.
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