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Home >> GMC >> 2009 >> Envoy 4.2 S, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - Introduction >> Repair Instructions >> Knock Sensor Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Locating Knock Sensor Components
    GM727528Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Component Fastener Tightening Caution .
  1. Install the knock sensor (1 or 2) and the bolt (3). Tighten the sensor to 25 N.m (18 lb ft).
  2. Connect the knock sensor harness connector (4).
  3. Lower the vehicle.
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