GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 LeSabre 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Engine Oil Level Sensor and/or Switch Replacement

Removal Procedure
  1. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .

    2. Object Number: 535633 Size: SH
  2. Disconnect the electrical connector (1) from engine oil level sensor.
  3. Remove the engine oil level sensor from the oil pan.

Installation Procedure

    Object Number: 535633 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 engine oil level sensor into the oil pan.

    2. Tighten
    Tighten the engine oil level sensor to 20 N·m (15 lb ft).

  2. Connect the electrical connector (1) to the engine oil level sensor.
  3. Fill the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Inspect for oil leaks after engine start up.