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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 470 (Engine Control System & Fuel System - 4.2L - Introduction) >> Repair Instructions >> Knock Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
    2. Fig 1: Locating Knock Sensor Components
    GM727528Courtesy of GENERAL MOTORS CORP.
  2. Remove the knock sensor harness connector (4).
  3. Remove the knock sensor retaining bolt (3).
  4. Remove the appropriate knock sensor (1 or 2).
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