GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Century 🢒 Engine 🢒 Engine Mechanical - 3.1L 🢒 Engine Oil Level Sensor and/or Switch Replacement

Removal Procedure

    Object Number: 190542 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the engine oil drain plug and drain the engine oil.

    3. Object Number: 54406 Size: SH
  3. Disconnect the engine oil level sensor electrical connector.
  4. Remove the bolt from the engine oil level sensor.
  5. Remove the engine oil level sensor from the oil pan.

Installation Procedure

    Object Number: 54406 Size: SH
  1. Install the engine oil level sensor to the oil pan.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the engine oil level sensor bolt.

    3. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  3. Connect the engine oil level sensor electrical connector.

    4. Object Number: 190542 Size: SH
  4. Install the engine oil drain plug.

    5. Tighten
    Tighten the engine oil drain plug to 25 N·m (18 lb ft).

  5. Lower the vehicle.
  6. Fill the crankcase with engine oil. Refer to Engine Oil and Oil Filter Replacement .