GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
TrailBlazer - 4WD
🢒
Diagnostic Navigation
🢒
Vehicle Diagnostic Information
🢒 Knock Sensor Replacement
Removal Procedure
Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
Remove the knock sensor harness connector (4).
Remove the knock sensor retaining bolt (3).
Remove the appropriate knock sensor (1 or 2).
Installation Procedure
Caution:
Refer to
Component Fastener Tightening Caution
in the Preface section.
Install the knock sensor (1 or 2) and the bolt (3). Tighten the sensor to
25 N·m (18 lb ft)
.
Connect the knock sensor harness connector (4).
Lower the vehicle.