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Replaced Knock Sensors And Harness

rzbobby

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rzbobby Enthusiast

rzbobby

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So I replaced both knock sensors and the harness in my 2004 Silverado 1500 5.3L and I still have the code for the back sensor! Do I have to take it to the dealer to erase the code or should disconnecting the battery (like I did) clear the code???????

Sly Enthusiast

Sly

Posted
Posted
So I replaced both knock sensors and the harness in my 2004 Silverado 1500 5.3L and I still have the code for the back sensor! Do I have to take it to the dealer to erase the code or should disconnecting the battery (like I did) clear the code???????

 

It may clear after a drive cycle. I would drive it for a few days and see if it clears. Not sure just disconnecting the battery would clear it.

rzbobby Enthusiast

rzbobby

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I have driven it for a week now and it's staying. I think I'm going to take it to the Stealership......

 

 

 

 

 

So I replaced both knock sensors and the harness in my 2004 Silverado 1500 5.3L and I still have the code for the back sensor! Do I have to take it to the dealer to erase the code or should disconnecting the battery (like I did) clear the code???????

 

It may clear after a drive cycle. I would drive it for a few days and see if it clears. Not sure just disconnecting the battery would clear it.

 

 

 

 

ujtruck Enthusiast

ujtruck

Posted
Posted

why did you Replaced Knock Sensors And Harness?

 

do you have a code reader?

rzbobby Enthusiast

rzbobby

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I took it to the dealer to read the codes and decided to replace them myself rather than pay the dealer 700.00.....

 

 

 

 

 

 

 

 

 

why did you Replaced Knock Sensors And Harness?

 

do you have a code reader?

rahair New Member

rahair

Posted
Posted

I replaced both my knock sensors during a new head install, bought them at NAPA and every 100 miles I would get the sel light with a knock sensor code, went and purchased 2 from my gm dealer and replace with those and no more sel, dont know why,

rzbobby Enthusiast

rzbobby

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The harness is brand new and I am getting a P0327

 

 

 

 

 

 

 

 

 

 

 

did you check the harness carefully? exactly which code are you getting?

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