06 yukon manifold gasket and knock sensors question

[OR VietVet]

your fine as long as you are not driving it in a manner to make it ping, just use good gas.
I don't remember what a shop charges to do it I think the oem sensors run around $50 each and the harness might be around $25-30
I would highly recommend not using aftermarket sensors otherwise you will be doing it again soon.

That is something I don't remember asking or hearing about. What brand of fuel and octane rating do you use?

 

[Doubeleive]

Thorough video except did not do harness and I am used to doing the silicone seal 2/3 moon around where the rubber cups plug back in. To each their own.

ya the silicone is pretty much a given, I sealed it all the way around

 

[Doubeleive]

That is something I don't remember asking or hearing about. What brand of fuel and octane rating do you use?

cheap, low octane fuel can cause knocking, just makes sense that if you have to drive it with a bad knock sensor to use better fuel
lolly gagging up a hill in high gear can cause knocking as well

 

[yukon06]

Yes to parts numbers see below

 

[yukon06]

cheap, low octane fuel can cause knocking, just makes sense that if you have to drive it with a bad knock sensor to use better fuel
lolly gagging up a hill in high gear can cause knocking as well

I hear no knocking, though i just filled up yesterday....i use regular as thats what it says to use and a welcome relief from using premium in the VW.....i mix up stations depending on when i need it and im pretty sure i filled at quickchek, which ive been doing the last year or so its close to home....any recommendations of octane or particular stations are welcome...im tired of things breaking down

 

[OR VietVet]

Been using the Plus/Mid Grade Chevron for gobs of years with no problems.

 

[Doubeleive]

I hear no knocking, though i just filled up yesterday....i use regular as thats what it says to use and a welcome relief from using premium in the VW.....i mix up stations depending on when i need it and im pretty sure i filled at quickchek, which ive been doing the last year or so its close to home....any recommendations of octane or particular stations are welcome...im tired of things breaking down

if the gas is good your fine I wouldn't even worry about it, I am thinking back to far when knock sensors where not a thing

 

[Sam Harris]

Bummer. They used Dorman knock sensors. It also looks like they replaced the harness. So my bet is those Dorman sensors are already bad. The OEM harness is a bit harder to find (though it can be purchased without too much trouble). I’d say you probably want to leave the harness, as long as it still looks good, and replace those knock sensors with OEM ones.

 

[Fless]

Bummer. They used Dorman knock sensors. It also looks like they replaced the harness. So my bet is those Dorman sensors are already bad. The OEM harness is a bit harder to find (though it can be purchased without too much trouble). I’d say you probably want to leave the harness, as long as it still looks good, and replace those knock sensors with OEM ones.

Looks to me like the 213-3521s are ACDelco knock sensors. The harness is Dorman; I don't think there's a GM one available IIRC. (You might be right about the harness availability)

 

[yukon06]

Well i surmise then dorman parts should be avoided in the future?
AC Delco only?

Update- CEL disappeared this afternoon...I dont know why, maybe the harness is loose if there is a connector?