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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1440 (ENGINE MECHANICAL - 5.3L)REPAIR INSTRUCTIONSOFF-VEHICLE REPAIR INSTRUCTIONSENGINE BLOCK PLUG REMOVAL
2004 Oldsmobile Bravada AWD

Engine Block Plug Removal

2004 Oldsmobile Bravada AWDSECTION Engine Block Plug Removal
WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

J 41712  Oil Pressure Switch Socket

IMPORTANT: Do not remove the engine block front oil gallery plug unless service is required.

If the front oil gallery plug is removed for service, a NEW oil gallery plug must be installed.

  1. Remove the oil pressure sensor, if not previously removed, using the J 41712  or equivalent.
    Fig 1: Removing Oil Pressure Sensor
    G02129403Courtesy of GENERAL MOTORS CORP.
  2. Remove the engine block right rear coolant plug.
    Fig 2: Removing Engine Block Right Rear Coolant Plug
    G02129404Courtesy of GENERAL MOTORS CORP.
  3. Remove the engine block coolant heater, if applicable.
    Fig 3: Removing Engine Block Coolant Heater
    G02129405Courtesy of GENERAL MOTORS CORP.
  4. Remove the engine block left rear coolant plug, if applicable.
    Fig 4: Removing Engine Block Left Rear Coolant Plug
    G02129406Courtesy of GENERAL MOTORS CORP.
  5. Remove the engine block left front oil gallery plug.
    Fig 5: Removing Engine Block Left Front Oil Gallery Plug
    G02129407Courtesy of GENERAL MOTORS CORP.
  6. Remove the engine block left rear oil gallery plug.
  7. Inspect the block plug sealing washers.

    If the block plug and heater sealing washers are not damaged, they may be used during assembly.

    Fig 6: Removing Engine Block Left Rear Oil Gallery Plug
    G02129408Courtesy of GENERAL MOTORS CORP.
  8. Remove the engine block rear oil gallery plug.
  9. Inspect the O-ring seal of the rear oil gallery plug.

    If the O-ring seal is not cut or damaged, the plug and O-ring seal may be used during assembly.

    Fig 7: Removing Engine Block Rear Oil Gallery Plug
    G02129409Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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