How much of a bitch are Knock sensors on LQ1?

[GOT2B GM]

For the past week or so my car's been throwing a code so I went and got it read, and its the knock sensor circuit. I understand there's 2 KS's on this engine. Has anyone ever replaced theirs, and how hard are they to get at?

 

Thanks

[gp90se]

very easy to do when the motors outta the car

 

Shouldnt be to hard from the passangers side wheel well.

[SigEpCutlass]

i've done mine in the L82 and it wasn't hard at all. Hopefully yours will be easy. If I remember correctly (it's been like 2 years) I just unscrewed it from towards the bottom of the engine. Then made sure i threaded the new one correctly and I was set.

[Guest Anonymous]

everything on the 3.4 is a bitch.

[digitaloutsider]

everything on the 3.4 is a bitch.

For some people, yes.

[5speedz34]

everything on the 3.4 is a bitch.

For some people, yes.

 

I'm assuming you have a auto, I haven't see the under side of a 3.4/4T60-E in a long time so I don't know how difficult it would be to get it from the bottom. The side is probably your best bet if not take the plenum off and go from there.

[GOT2B GM]

Right on, sounds like its not too bad as long as I can get them from wheel well or by removing the plenum. There's not much room at all to get at anything from the bottom with the 3.4DOHC 4T60E combo.

[joey b]

go from behind/under. In the alternator cooling duct there is a curver that is to go around the knock sensor. You will want to access it from there. That is the only knock sensor on your car. It might be a little harder than you plan on.

[GOT2B GM]

I just got the part yesterday. Do you have to remove the alt. cooling duct to replace the KS?