gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Tune-up and Engine Performance Checks > < Diagram Information and Instructions|Page 5189
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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.

Tune-up and Engine Performance Checks > < Diagram Information and Instructions|Page 5189