Engine Block Plug Removal

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Engine Block Plug Removal
WARNING: This page is about a different variant/trim than selected.

Tools RequiredΒ 

J 41712Β  Oil Pressure Switch Socket

  1. Remove the transmission locator pins, if required.
    Fig 1: Transmission Locator Pins
    G01688602Courtesy of GENERAL MOTORS CORP.
  2. Remove the S type pin, and the crankshaft rear oil seal housing, if required.
    Fig 2: S Type Pin
    G01688603Courtesy of GENERAL MOTORS CORP.
  3. Remove the expansion cup plug from the camshaft rear bearing hole.
    Fig 3: Expansion Cup Plug
    G01688604Courtesy of GENERAL MOTORS CORP.
  4. Remove the engine oil pressure gage sensor using the J 41712Β  .
    Fig 4: Removing Engine Oil Pressure Gage Sensor Using J 41712
    G01688605Courtesy of GENERAL MOTORS CORP.
  5. Remove the engine oil pressure sensor gage sensor fitting.
    Fig 5: Engine Oil Pressure Sensor Gage Sensor Fitting
    G01688606Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine block oil gallery plugs from the rear of the engine block and discard.
    Fig 6: Engine Block Oil Gallery Plugs (Rear)
    G01688607Courtesy of GENERAL MOTORS CORP.
  7. Remove the left side rear and left rear top engine block oil gallery plugs.
    Fig 7: Left Side Rear & Left Rear Top Engine Block Oil Gallery Plugs
    G01688608Courtesy of GENERAL MOTORS CORP.
  8. Remove the engine block oil gallery plugs 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 engine block oil gallery plugs.

    Fig 8: Engine Block Oil Gallery Plugs (Front)
    G01688609Courtesy of GENERAL MOTORS CORP.
  9. Remove the engine block core hole plugs.
    1. 9.1. Use a suitable tool in order to drive the engine block core hole plug into the coolant jacket.
    2. 9.2. Use a suitable tool in order to pull the engine block core hole plug from the coolant jacket.
    3. 9.3. Discard the engine block core hole plug.
    Fig 9: Engine Block Core Hole Plugs
    G01688610Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.