GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Yukon XL - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Knock Sensor 2 Replacement

Removal Procedure

    Object Number: 1964987 Size: SH
  1. Remove the right front wheel and tire. Refer to Tire and Wheel Removal and Installation.
  2. Working through the wheel well opening, disconnect the engine wiring harness electrical connector (3) from knock sensor.

    3. Object Number: 1402140 Size: SH
  3. Remove the knock sensor bolt (739) and knock sensor (718).

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1402140 Size: SH
  1. Position the knock sensor (718) to the engine block and install the knock sensor bolt (739).

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


    Object Number: 1964987 Size: SH
  2. Connect the engine wiring harness electrical connector (3) to knock sensor.
  3. Install the right front wheel and tire. Refer to Tire and Wheel Removal and Installation.