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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Engine Mechanical - 4.3L) >> Repair Instructions - Off Vehicle >> Engine Block Plug Removal >> Removal

Engine Block Plug Removal: Removal

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Knock Sensor & Bolt
    GM1877015Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to SAFETY GLASSES CAUTION .
  1. Remove the knock sensor bolt and knock sensor from the left side of the lower engine block.
    2. Fig 2: View Of Knock Sensor & Bolt
    GM1877020Courtesy of GENERAL MOTORS CORP.
  2. Remove the knock sensor bolt and knock sensor from the right side of the lower engine block.
    3. Fig 3: Block Heater
    GM1970823Courtesy of GENERAL MOTORS CORP.
  3. Remove the block heater from the right side of the lower engine block.
    4. Fig 4: View Of Engine Oil Pressure Gage Sensor
    GM188018Courtesy of GENERAL MOTORS CORP.
  4. Remove the engine oil pressure gage sensor using the J 41712  . See Special Tools .
    5. Fig 5: Engine Oil Pressure Sensor Fitting
    GM188020Courtesy of GENERAL MOTORS CORP.
  5. Remove the engine oil pressure sensor fitting.
    6. Fig 6: Identifying Transmission Locator Dowel Straight Pin
    GM334350Courtesy of GENERAL MOTORS CORP.
  6. Remove the transmission locator dowel straight pins, if required.
    7. Fig 7: Engine Block Oil Gallery Plugs
    GM5271Courtesy of GENERAL MOTORS CORP.
  7. Remove the engine block left side oil gallery plug.
  8. Remove the engine block left rear oil gallery plug.
  9. Remove the engine block right rear oil gallery plug.
    10. Fig 8: Identifying Camshaft Rear Bearing Hole Expansion Cup Plug
    GM334364Courtesy of GENERAL MOTORS CORP.
  10. Remove the expansion cup plug from the camshaft rear bearing hole and discard.
    11. Fig 9: View Of Balance Shaft Rear Bearing Hole Expansion Cup Plug
    GM334366Courtesy of GENERAL MOTORS CORP.
  11. Remove the expansion cup plug from the balance shaft rear bearing hole and discard.
    12. Fig 10: Crankshaft Rear Oil Seal Housing Locator Spring
    GM334323Courtesy of GENERAL MOTORS CORP.
  12. Remove the crankshaft rear oil seal housing locator spring type S pin, if required.
    13. Fig 11: Front Of Engine Block Front Oil Gallery Plugs Or Balls
    GM5270Courtesy of GENERAL MOTORS CORP.
  13. 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.

    14. Fig 12: Engine Block Core Hole Plugs
    GM480550Courtesy of GENERAL MOTORS CORP.
  14. Remove the engine block core hole plugs.
    1. Use a suitable tool in order to drive the engine block core hole plugs into the coolant jacket.
    2. Use a suitable tool in order to pull the engine block core hole plugs from the coolant jacket.
    3. Discard the engine block core hole plugs.
    15. Fig 13: Identifying Oil Filter Bypass Valve
    GM188026Courtesy of GENERAL MOTORS CORP.
  15. Remove the oil filter bypass valve and discard.
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