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

Removal Procedure

    Object Number: 1665460 Size: SH
  1. Disconnect the engine harness electrical connector (1) from the crankshaft position (CKP) sensor wiring harness electrical connector.
  2. Remove the intake manifold. Refer to Intake Manifold Replacement.

    3. Object Number: 1672558 Size: SH
  3. Disconnect the CKP sensor wiring harness electrical connector (1) from the CKP sensor.
  4. Disconnect the CKP sensor wiring harness electrical connector (2) from the left knock sensor.
  5. Disconnect the harness clip (3) from the engine harness ground bracket.

    6. Object Number: 1672557 Size: SH
  6. Disconnect the CKP sensor wiring harness electrical connector (3) from the right knock sensor.
  7. Remove the harness clip (4) from the engine block hole.
  8. Remove the CKP sensor wiring harness bolts (1, 2).
  9. Remove the CKP sensor wiring harness.

Installation Procedure

    Object Number: 1672557 Size: SH
  1. Install the CKP sensor wiring harness.

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the CKP sensor wiring harness bolts (1, 2).

    3. Tighten

        • Tighten the bolt (1) to 10 N·m (89 lb in).
        • Tighten the bolt (2) to 20 N·m (15 lb ft).
  3. Install the harness clip (4) to the engine block hole.
  4. Connect the CKP sensor wiring harness electrical connector (3) to the right knock sensor.

    5. Object Number: 1672558 Size: SH
  5. Connect the harness clip (3) to the engine harness ground bracket.
  6. Connect the CKP sensor wiring harness electrical connector (2) to the left knock sensor.
  7. Connect the CKP sensor wiring harness electrical connector (1) to the CKP sensor.

    8. Object Number: 1665460 Size: SH
  8. Install the intake manifold. Refer to Intake Manifold Replacement.
  9. Connect the engine harness electrical connector (1) to the CKP sensor wiring harness electrical connector.