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Home >> Chevrolet >> 2004 >> Blazer 2D Utility, 4WD, Part Time, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - 4.3L - Introduction) >> Repair Instructions >> Knock Sensor (KS) Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to COMPONENT FASTENER TIGHTENING NOTICE in Cautions and Notices.
  1. Install the knock sensor (2) and the knock sensor bolt (1).

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

    Fig 1: Locating Knock Sensor & Retaining Bolt
    GM679284Courtesy of GENERAL MOTORS CORP.
  2. Connect the knock sensor harness connector (3).
  3. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  4. Connect the negative battery cable.
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