Knock sensor

[ND-1965C10]

I recently purchased a 2003 Trailblazer Ext North Face with the 5.3.
I have an error code for the knock sensor. Don't remember the code off hand. But looking to replace the sensor.
I am wanting to round up parts before I start taking things apart and looking for any assistance on what else I need or should look to replace since I will be started. It looks like I need intake gaskets for sure.
From what I found it looks like it is under the intake. I am new to this engine and tearing in for the first time so would appreciate any insight. I typically work on my old stuff which is pre-sensors. Engine has 138K.

 

[Wooluf1952]

Check here for manuals: Need service manuals? Get them Here!

Others will chime in.

 

[Mounce]

Video I stumbled across a while back. Can't remember if he lists parts needed. It's on a silverado but it should be just about the same thing. Watch the fancy work with the caulk, will keep them from going out again if water is the issue.

 

[therealsethallen]

1A Auto has an excellent video explaining knock sensor replacement if that's your gig. A friend did a knock sensor job on a 5.3 Tahoe PPV not long ago, what a pain.

Parts:

Sensor: ACDelco 213-3521
Intake Gaskets: Fel-Pro MS98016T