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Help with 6.0l knock sensor replacement.

Roach182

By Roach182
in Ask A GM Technician

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Roach182 Enthusiast

Roach182

Posted
Posted

My check engine light is on with a p0332 code. It idicates the rear knock sensor is bad. I have verified this with a DMM, the front KS shows 100K Ohm to ground but the rear is bouncing around between 600k and 2Meg. It could be a poor connection but never the less the intake manifold has to come off. TSB #02-06-04-023A mentions making a RTV silicone dam around the knock sensor and refers to a picture. Would anyone have a picture or illustration as to how to build this dam and where to leave the opening. Also I would like to know what order and to what specifications the intake manifold bolts are to be torqued to.

 

Thanks in advance.

Roach182 Enthusiast

Roach182

Posted
  • Author
Posted

I found the information on torque specs and bolt order for the intake manifold but would still like to see how to make the rtv dam around the knock sensor.

 

TIA

 

edit to add:

 

I received my intake manifold gaskets today. They look like they do not need any silicone, is this the case?

Norseman Senior Enthusiast

Norseman

Posted
Posted
I found the information on torque specs and bolt order for the intake manifold but would still like to see how to make the rtv dam around the knock sensor.

 

TIA

 

edit to add:

 

I received my intake manifold gaskets today. They look like they do not need any silicone, is this the case?

 

 

 

 

 

Roach, did you get my E-mail??

Roach182 Enthusiast

Roach182

Posted
  • Author
Posted
I found the information on torque specs and bolt order for the intake manifold but would still like to see how to make the rtv dam around the knock sensor.

 

TIA

 

edit to add:

 

I received my intake manifold gaskets today. They look like they do not need any silicone, is this the case?

 

 

 

 

 

Roach, did you get my E-mail??

 

 

 

 

 

Norseman, yes I did, Thank you very much. I think I have everything I need now.

Roach

:P

Roach182 Enthusiast

Roach182

Posted
  • Author
Posted

Thanks Norseman,

Job done, truck works as good as new. There must have been more than a knock sensor bad. The truck used to bog down a lot on hills and miss at times when I would step on her. I bet I had a leaking intake manifold gasket which would have been replaced on this job. My brother and myself did the job in 2 hours, we could not have done it proper without the information you sent me.

 

Thanks again,

 

Roach182

Norseman Senior Enthusiast

Norseman

Posted
Posted
Thanks Norseman,

Job done, truck works as good as new. There must have been more than a knock sensor bad. The truck used to bog down a lot on hills and miss at times when I would step on her. I bet I had a leaking intake manifold gasket which would have been replaced on this job. My brother and myself did the job in 2 hours, we could not have done it proper without the information you sent me.

 

Thanks again,

 

Roach182

 

 

Glad I could help :) Let me know if ya need anything else and I'll do my best to help anyway I can.

  • 2 weeks later...
  • 7 months later...
victor231 Enthusiast

victor231

Posted
Posted

I am new to posting to this board, but I have used it in the past to save time on a lot of repairs. Today I just got the PO332 code on the computer. I blanked it, then got it again. The engine has about 125k miles, so I am figuring that the knock sensor needs replacing. Can someone send me the diagram of the silicone dam that is supposed to go around the sensor? How about a part number or good place to get the part? I have a 2000 Silverado 2500 with the 6.0 and "u" engine code. Lastly, is there anything else under the manifold that I should replace while it's off (besides gaskets, etc.)?

Thanks

Norseman Senior Enthusiast

Norseman

Posted
Posted
I am new to posting to this board, but I have used it in the past to save time on a lot of repairs. Today I just got the PO332 code on the computer. I blanked it, then got it again. The engine has about 125k miles, so I am figuring that the knock sensor needs replacing. Can someone send me the diagram of the silicone dam that is supposed to go around the sensor? How about a part number or good place to get the part? I have a 2000 Silverado 2500 with the 6.0 and "u" engine code. Lastly, is there anything else under the manifold that I should replace while it's off (besides gaskets, etc.)?

Thanks

 

 

What is your e-mail?

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