GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Knock Sensor Replacement

Removal Procedure

    Object Number: 782680 Size: SH
  1. Remove the distributor. Refer to Distributor Replacement .
  2. Disconnect the knock sensor electrical connector (1).

    3. Object Number: 679284 Size: SH
  3. Remove the knock sensor bolt (1).
  4. Remove the knock sensor (2).

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 679284 Size: SH
  1. Install the knock sensor (2).
  2. Install the knock sensor bolt (1).

    3. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 782680 Size: SH
  3. Connect the knock sensor electrical connector (1).
  4. Install the distributor. Refer to Distributor Replacement .