Knock sensors P0332

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Jul 13, 2024 | 08:59 AM

#51

Oldblue

Administrator

Joined: 10-13-2011

Posts: 39,900

From: Welland,Ont Canada

He asked for the factory part number.

Jul 13, 2024 | 12:46 PM

#52

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,448

From: Fredericksburg,VA

And I supplied them.

Jul 13, 2024 | 01:27 PM

#53

Oldblue

Administrator

Joined: 10-13-2011

Posts: 39,900

From: Welland,Ont Canada

We both did.

Jul 13, 2024 | 01:45 PM

#54

PulpFriction

Senior Member

Joined: 12-05-2014

Posts: 3,330

From: Northern Ohio

Quote:

Originally Posted by donbrew

That is the number the "book" says for the 2.0. The ACDelco number is 213-4583/GM 12621820.
My guess is NGK/NTK makes the part.
I would also look at loose pins in the ECM connectors.

Quote:

Originally Posted by Oldblue

The part number is 12621820. Fits many GM variants, I suggest the wiggle test the sensor may be loose, just snug up the bolt .

The moderators here are fountains of knowledge. Thanks, guys!

Mar 13, 2026 | 07:30 PM

#55

SSPanelPete

Joined: 05-24-2025

Posts: 1

Knock sensors.

Im finishing a project that was inherited. Im finishing a engine swap. And cant seem to find where both sensors are supposed to be mounted and how to tell 1 from 2? Any help would be great. Any pics would be great

Mar 13, 2026 | 08:36 PM

#56

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,448

From: Fredericksburg,VA

If you mean O2 sensors #1 is before the cat and #2 is after. On a SS #1 is a broad band sensor #2 is common to all HHRs.
If you mean the knock sensors see post 14 and forward.