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Home >> Chevrolet >> 2007 >> TrailBlazer 4WD L6-4.2L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Knock Sensor >> Service and Repair
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Knock Sensor: Service and Repair



Knock Sensor Replacement

Removal Procedure

1. Raise the vehicle. Refer to Vehicle Lifting.




2. Remove the knock sensor harness connector (4).
3. Remove the knock sensor retaining bolt (3).
4. Remove the appropriate knock sensor (1 or 2).

Installation Procedure






Notice: Refer to Component Fastener Tightening Notice.

1. Install the knock sensor (1 or 2) and the bolt (3).

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

2. Connect the knock sensor harness connector (4).
3. Lower the vehicle.

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