I got a CEL while down the shore last week and ran to autozone today to read it. Heres what it said

P0327
Knock Sensor 1
Circuit Low Output
Bank 1 or 1 sensor

I cleared the code and it hasent come back on. Is this something i can ignore?
When i was down the shore there was a flood and i was driving thorugh 3-4 foot waters for a couple miles to get off the island. My CEL went on then and showed the the battery was not charging. The belt was also slipping ALOT. I let the truck run for a while and the light when off and everything went back to normal, 2 days later a light comes back on but with no message. What should i do?

 

The light is back on again

 

replace the knock sensor.

 

yeah i found one on ebay for $30 so i think ill go with that. Is there anything i should look out for when changing it?

 

Yes, possible corrosion on in the knock sensor connectors. You'll need some RTV too...it's common for water to get under the intake into the valley cover where the knock sensors are located. GM's fix is to build a "dam" of RTV around where the knock sensor connectors plug in to keep water from getting in there. If you search for "knock sensor" you should find pics of the RTV fix that I'm referring to. The sub-harness to the knock sensors may need to be replaced also if it's oxidized to the point of no return.

 

sounds good, Ill post some pics when i do it. Where on/in the engine bay will i find the sensor when im replacing it?

 

under the manifold lol.... real handy!

 

damn, i was hoping i could do this without stripping down the whole engine. haha to you guys its nothing but i dont get to tear down everyday even though i would love too. Oh well ill see what i can do. Wish me luck haha

 

while your there, I would replace both and the harness, Build an RTV.

 

Last question, the code was for bank 1 so which of the two sensors is bank 1. I would think its the first one?