Ok guys looking for a little guidence i was diving about a month ago check engine light comes on, check codes and have a po332 rear knock sensor bank 2 low freq. i pulled the intake to inspect sensor and wiring replaced everything sensors harness whole nine still has the same code but now i have a random multiple to add to the list i have been told that the MAP can cause this new one will be here tomorrow gonna try it and see if anyone else has any ideas could use some fresh input

 

I know that I had my knock sensors replaced back in the day when the Chariot was still under warranty, and I do believe there was a notice posted about it.... I have the ppwk.

If you want I can dig up my receipts and look at the list GM fixed. Just let me know.

 

Thats cool if there is a bulliten i can find it the only ones i have seen just deal with water down in the valley causing them to rust but i have fixed that but thanks though

 

when i changed mine, i still had the code, had to have it cleared, and hasnt been back on

 

I've scanned ir cleared the codes checked everything twice and still have the code im ready to tear into the main engne harness and re-pin the whole circuit if that doesn't fix it nelson ecm all the way

 

Guarantee it's a wiring problem in that circuit. Open up the harness between the driver side valve cover stand of and the underhood power center. Find that wire and a replace it from the pcm to the knock sensor connector. Or pull and tug on the wire until you find where it has the internal break and it will pull in half. Had lots of problems with all kinds of different circuits on these trucks usually always toward the bottom of the drip loop on the harness is where it's at. The engine torquing over to the passenger side just flexes the harness so much that after they get some miles on them or the harness is disturbed gremlins start showing up.