knock sensor low voltage?
knock sensor low voltage? So I was driving my 99 z28 the other day and my ses light came on. I had the code pulled at autozone and all that came up was knock sensor low voltage. Has anyone had experience with this and if so what is the solution?
Thanks,
Steve
Thanks,
Steve
Replace the knock sensor harness and both knock sensors. Throw away the rear foam baffle on the intake and then build a dame 3/4 of the way around the rearmost knock sensor using gm grey rtv silicone. They usually fill up with water rust out and then fail. The above is a gm tsb to avoid a repeat in the future.
Replace the knock sensor harness and both knock sensors. Throw away the rear foam baffle on the intake and then build a dame 3/4 of the way around the rearmost knock sensor using gm grey rtv silicone. They usually fill up with water rust out and then fail. The above is a gm tsb to avoid a repeat in the future.
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
If you can hear a knock could be a mechanical issue, and yes, the PCM retards spark timing. Visit gearchatter.com and look up P0327/P0332 for your year for description/diagnostics.
