Knock Sensors -- Why do they keep going bad??

[GBs_03]

<div class='quotetop'>QUOTE(Mighty Hd &#064; Sep 25 2006, 07&#58;28 PM) [snapback]66530[/snapback]</div>

Well I swapped in the stock pcm--could NOT get the light to come back on--tried 3 complete driving cycles, etc.

I put the nelson tune back in and sure enough the light is gone there as well.

I wander what the deal is?
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Could it have been a bent or dirty pin in the tuned PCM?

[Mighty Hd]

<div class='quotetop'>QUOTE(GBs_03 &#064; Jan 1 2007, 07&#58;35 AM) [snapback]77961[/snapback]</div>

Could it have been a bent or dirty pin in the tuned PCM?
[/b]

I checked that as well.

Since my previous post they have been replaced.

The check engine light is on AGAIN with a knock sensor low voltage code again.

Going to the dealer for another replacement. This will be set #6 in 20,000 miles.