knock sensor location

[texas dogman]

Does anyone know where the knock sensors are located on a 2001 Silverado, 6.0 liter?

Thanks..

 

[grant5127]

I seem to remember a friend of mine bitching about this on his truck.... IIRC under the intake manifold towards the rear of the engine..... Do you have spark knock or MIL codes?

 

[texas dogman]

That's what I was afraid of....under the intake manifold.

Only got MIL codes. It'll really be a bitch if I get to them, replace, and it turned out to be something else.

 

[grant5127]

I sent a message asking about this and got this reply back.....CauseThis condition may be the result of corrosion of the rear bank knock
sensor due to water intrusion into the sensor cavity. This condition is more
apparent on vehicles in which customers frequently wash the engine
compartment.

CorrectionReplace the rear bank knock sensor and build a dam (wall) around
the sensor using RTV to divert water away from the sensor. Use the procedure..

Remove the intake manifold. Refer to the Intake Manifold Replacement
procedure in the Engine Controls sub-section of the appropriate Service
Manual.


Remove the wiring harness assembly from the knock sensor.


Remove the rear bank knock sensor.
Install the new rear bank knock sensor. TightenTighten the knock sensor to
20 N·m(15 lb ft).

Install the wiring harness assembly to the knock sensor.


Apply a bead of RTV silicone sealant approximately 9 mm (3/8 in) wide and
6 mm (1/4 in) high along the outside edge of the ridge on the engine block
valley cover around the rear bank knock sensor. DO NOT form a complete
circle. Leave the rear section open as shown.
From the underside of the intake manifold, completely remove the rear intake
manifold seal (foam material).
Install the intake manifold.

 

[texas dogman]

how dificult did you find removing all the crap and the intake manifold?