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Home >> Chevrolet >> 2004 >> Astro Van Passenger, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.3L - Introduction >> Repair Instructions >> Knock Sensor (KS) Replacement >> Removal Procedure

Removal Procedure

CAUTION: Refer to BATTERY DISCONNECT CAUTION in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  3. Disconnect the knock sensor harness connector (3).
  4. Remove the knock sensor bolt (1) and knock sensor (2).
    Fig 1: Locating Knock Sensor & Retaining Bolt
    GM679284Courtesy of GENERAL MOTORS CORP.
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