GM Service Manual Online
For 1990-2009 cars only

Engine Oil Pressure Sensor or Switch Replacement 4.3L

Tools Required

J 41712 Oil Pressure Switch Socket

Removal Procedure


    Object Number: 348108  Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Disconnect the engine oil pressure (EOP) gauge sensor electrical connector.
  3. Hold the engine EOP gauge sensor fitting with a wrench.
  4. Remove the engine EOP gauge sensor using J 41712 .

  5. Object Number: 348110  Size: SH

    Important: Note the alignment of the EOP gauge sensor fitting prior to removal.

  6. Remove the EOP gauge sensor fitting, if necessary.

Installation Procedure


    Object Number: 348110  Size: SH

    Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

  1. Install the EOP gauge sensor fitting, if removed.
  2. Tighten
    Tighten the fitting to 15 N·m (11 lb ft).

    Important: Do not loosen the sensor fitting. Do not tighten the sensor fitting more than one turn to align.

  3. Tighten the sensor fitting until properly aligned.

  4. Object Number: 348108  Size: SH
  5. Install the EOP gauge sensor.
  6. Hold the EOP gauge sensor fitting with a wrench to prevent from turning. Use the J 41712 in order to tighten the EOP gauge sensor.
  7. Tighten
    Tighten the sensor to 30 N·m (22 lb ft).

  8. Connect the EOP gauge sensor electrical connector.
  9. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.

Engine Oil Pressure Sensor or Switch Replacement 5.7L

Tools Required

J 41712 Oil Pressure Switch Socket

Removal Procedure

  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 5.7L.

  3. Object Number: 348108  Size: SH
  4. Disconnect the electrical connector from the engine oil pressure (EOP) gauge sensor.
  5. Hold the EOP gauge sensor fitting with a wrench.
  6. Important: Note the alignment of the EOP gauge sensor fitting prior to removal.

  7. Remove the EOP gauge sensor using J 41712 .

  8. Object Number: 333652  Size: SH
  9. Remove the EOP sensor fitting, if necessary.

Installation Procedure


    Object Number: 333659  Size: SH
  1. Apply sealant GM P/N 12346004 or equivalent to the threads of the EOP sensor fitting.
  2. Important: Do not loosen the EOP sensor fitting after the initial torque has been obtained.

    Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

  3. Install the EOP gauge sensor fitting.
  4. Tighten
    Tighten the fitting to 15 N·m (11 lb ft).

    Important: Do not rotate the EOP sensor fitting more than 359 degrees after the initial torque has been obtained.

  5. Rotate the EOP sensor fitting clockwise to the proper position (1), 50 degrees from the centerline (2).

  6. Object Number: 348108  Size: SH
  7. Install the EOP sensor.
  8. Hold the EOP sensor fitting with a wrench to prevent from turning. Use the J 41712 in order to tighten the EOP sensor.
  9. Tighten
    Tighten the sensor to 30 N·m (22 lb ft).

  10. Connect the electrical connector.
  11. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  12. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 5.7L.

Engine Oil Pressure Sensor or Switch Replacement 6.5L

Tools Required

J 41712 Oil Pressure Switch Socket

Removal Procedure


    Object Number: 337977  Size: SH
  1. Remove the engine cover from the vehicle. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the electrical connector from the engine oil pressure (EOP) sending unit.
  3. Use the J 41712 in order to remove the EOP sending unit from the engine block.

Installation Procedure


    Object Number: 337977  Size: SH

    Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

  1. Use the J 41712 in order to install the EOP sending unit to the engine block.
  2. Tighten
    Tighten the oil sending unit to 12 N·m (9 lb ft).

  3. Connect the electrical connector to the EOP sending unit.
  4. Install the engine cover in the vehicle. Refer to Engine Cover Replacement in Interior Trim.

Engine Oil Pressure Sensor or Switch Replacement 8.1L

Tools Required

J 25254-10 A Oil Pressure Sending Unit Socket

Removal Procedure

  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.

  2. Object Number: 351829  Size: SH
  3. Disconnect the electrical connector.
  4. Remove the engine oil pressure (EOP) sensor using J 25254-10 A .

Installation Procedure


    Object Number: 351829  Size: SH
  1. Install the EOP sensor.
  2. Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

  3. Hold the EOP sensor fitting with a wrench to prevent from turning. Use J 25254-10 A in order to tighten the EOP sensor.
  4. Tighten
    Tighten the sensor to 30 N·m (22 lb ft).

  5. Connect the electrical connector.
  6. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.