GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Lucerne 🢒 Engine 🢒 Engine Controls and Fuel - 4.6L 🢒 Crankshaft Position Sensor Replacement

Removal Procedure

    Object Number: 1672558 Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Disconnect the crankshaft position (CKP) sensor wiring harness electrical connector (1) from the CKP sensor.

    3. Object Number: 1672560 Size: SH
  3. Remove the CKP sensor bolt. (cylinder heads shown removed, for clarity).
  4. Remove the CKP sensor.

Installation Procedure

    Object Number: 1672560 Size: SH
  1. Lubricate the crankshaft sensor O-ring seal with clean engine oil.
  2. Install the CKP sensor.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the CKP sensor bolt.

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


    Object Number: 1672558 Size: SH
  4. Connect the CKP sensor wiring harness electrical connector (1) to the CKP sensor.
  5. Install the intake manifold. Refer to Intake Manifold Replacement .
  6. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn .