GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Enclave 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Knock Sensor Replacement - Bank 1

Removal Procedure

    Object Number: 1860405 Size: SH
  1. Remove the exhaust manifold lower heat shield. Refer to Exhaust Manifold Lower Heat Shield Replacement.
  2. Disconnect the engine wiring harness electrical connector (1) from the bank 1 knock sensor (2).

    3. Object Number: 860801 Size: SH
  3. Loosen the knock sensor bolt and remove the knock sensor.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 860801 Size: SH
  1. Position the knock sensor and tighten the knock sensor bolt.

    2. Tighten
    Tighten the bolt to 23 N·m (17 lb ft).


    Object Number: 1860405 Size: SH
  2. Connect the engine wiring harness electrical connector (1) to the bank 1 knock sensor (2).
  3. Install the exhaust manifold lower heat shield. Refer to Exhaust Manifold Lower Heat Shield Replacement.