LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2009 >> H3 V8-5.3L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Knock Sensor >> Service and Repair >> Knock Sensor 2 Replacement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Knock Sensor 2 Replacement




Knock Sensor 2 Replacement

Removal Procedure




1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).
2. Disconnect the engine wiring harness electrical connector (3) from the knock sensor.




3. Remove the knock sensor bolt (739) and sensor (718).

Installation Procedure





Caution: Refer to Fastener Caution (Fastener Caution).

1. Position the knock sensor (718) to the engine block and install the bolt (739).

Tighten the bolt to 20 Nm (15 lb ft).




2. Connect the engine wiring harness electrical connector (3) to the knock sensor.
3. Lower the vehicle.