GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 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. Caution: Refer to Fastener Caution 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.