Knock Sensor Low Voltage

[StormspotrJr]

I just replaced both knock sensors and the wiring harness on my 05 silverado with the 5.3. I changed the wiring harness with it as well. Now it says that I have Low voltage codes on bank 1 and bank 2. I am wanting to know whats wrong so I can fix it. Any help on this would be greatly appreciated

[Mikeee]

Did you use GM knock sensors and harness?

Did you put any compound on the threads of the sensors?

[txab]

^^^+1

 

Did you torque them properly?

[Mikeee]

Speaking of knock sensors....now I'm getting intermittent 327's. Just finished the fuel pump a few days ago. And a few days before that was a full rear pad/shoe/rotor job.

 

Anyway, what is the current practice of the the RTVing of the sensor cover plugs?

Do both?

Just the rear?

Goop the sides of the plug 360*?

Goop the top of the plug?

Goop a water dam 300* in front of the plug?

Goop....?

[ScottyBoy]

I was getting a knock sensor code on my Suburban a few months ago. Every time I reset it, the code would pop up a day or two later. But then something funny happened. At every oil change, I add a bottle of Amsoil "PI" Performance Improver to my gas tank. It helps a lot with cleaning the fuel system and actually helps my truck run better. After adding that to my gas tank, and resetting the CEL, the knock sensor code has not come back. It's been well over a month and a half now of daily driving, and still no CEL codes. I was actually VERY surprised that the Amsoil fuel additive could do that. I wasn't even expecting it, I was getting ready to order new knock sensors from Rockauto but I was very pleasantly surprised that the code never came back after adding a bottle of PI to my tank. I would highly recommend trying it if you are having trouble with your knock sensors.

[patriot]

Nice ad

[ScottyBoy]

Nice ad

Because I give a good review of a product that I used, then it's an "AD"???

Just trying to help other users out who May have the same problem as I did. I'm just glad that it world of me and I actually wasn't even expecting that. I use PI anyway and the code going away was just a nice unexpected bonus I guess.