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Home >> Buick >> 2011 >> Lucerne CX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.9L - Repair Instructions >> Repair Instructions >> Knock Sensor Replacement - Bank 1 >> Installation Procedure
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Installation Procedure

CAUTION:

Refer to Fastener Caution .

NOTE:

DO NOT apply thread sealant to the sensor threads. The sensor threads are coated at the factory. Applying additional sealant affects the sensors ability to detect detonation.

    Fig 1: Identifying Knock Sensor
    GM1587771Courtesy of GENERAL MOTORS COMPANY
  1. Install and tighten the knock sensor (1).

    Tighten 

    Tighten the sensor to 25 N.m (18 lb ft).

    2. Fig 2: Identifying Electrical Connector
    GM1612884Courtesy of GENERAL MOTORS COMPANY
  2. Connect the knock sensor electrical connector (1).
  3. Install the three-way catalytic converter. Refer to Three-Way Catalytic Converter Replacement (V6) .
  4. Lower the vehicle.
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