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2002 gmc ex cab po 332 knock sensor.. what is this?

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Their are 2 knock sensors located under the intake manifold you can't see them without removing the intake, they go bad quite often and I have replaced lots of them if attempting this repair on your own you should buy a book, one sensor will be bad, usually the rear due to water intrusion but replace both while your in there

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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Where are the two knock sensors located on a 2002 GMC 2500HD with a 6.0 engine. Which sensor is classified as number one and number two.


Hello: There are two knock sensors under the intake manifold on top of the engine. Replace them both.

Oct 06, 2011 | 2002 GMC Sierra 2500HD

1 Answer

What are the following Code definitions on a 1996 Ford Contour: 157, 158, 159, 181, 327, 332


157= 02 sensor ckt low volts 2/ 2 158=o2 sensot ckt high volts 2/ 2 159= o2s ckt slow response 2/2 181= fuel temp sensor a ckt rng/perform 327= knock sensor 1 ckt low imput bank 1 or single sensor 332= knock sensor 2 ckt low input bank 2

Jul 19, 2011 | 1996 Ford Contour

3 Answers

I have a 99 chevy 1500 4x4 5.3 l got code po 332 put new ones in same code saws low voilts


This condition may be the result of corrosion of the rear bank knock sensor due to water intrusion into the sensor cavity. This condition is more apparent on vehicles in which customers frequently wash the engine compartment. Replace the rear bank knock sensor and build a dam (wall) around the sensor using RTV to divert water away from the sensor. Also, check for corrosion on the connector plug. Visually inspect the wiring going to the Rear Bank Knock Sensor for damage. After you have replaced the sensor, and checked for damages, have the code reset and see if it comes back.

Mar 10, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 04' Chev, 6.0L. Engine light came on, fault code came up PO332. I'm afraid the KS's are under the intake. Is there any way to test the KS to see if it is bad, or is there another problem that is...


P0332 - Knock Sensor 2 Circuit Low Input (Bank 2)

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Engine Control Module (ECM).

Causes for P0332 DTC:
- Knock sensor circuit short to GND.
- Knock sensor circuit short to PWR.
- Knock sensor circuit open.
- Damaged knock sensor.
- PCM or ECM failure.

Solutions:
- Repair or resecure the harness or connector.
- Replace the knock sensor.

Your best bet is to just replace the knock sensor for sensor 2 bank 2. Call Auto Zone with part number SU1282 this is the OEM replacement.

The knock sensor looks like this:

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Mar 09, 2011 | 2004 Chevrolet Silverado 2500 Crew Cab

1 Answer

A recent scan indicated the following PO 332 knock sensor PO 420 Cat. Converter PO 430 Cat. Converter PO 300 Misfire on cylinders 2, 4, an 6.


These are all transient symptoms, so I would not panic.
What I would suggest is putting in a tank of premium and fuel dryer.
A little water or cheap low octane gas can cause these symptoms.

If it happens again, a second try would be plug wires, because crossover in the wires will also do it.
Reducing plug gap will also make problems like this less noticeable.
You can go as low as .028".

Start with the cheap tries first, then worry about the more expensive things.

Jan 21, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

Need the location of knock sensor in my 98 gmc sonoma xtended cab 4x4...


The knock sensor is on the rear of the motor behind the left cylinder head.Hope this helps.Good luck.

Feb 02, 2010 | 1998 GMC Sonoma

1 Answer

How do i chang the fuel pressure regulator its not behind the fuel meter body is it under the intake? on a 2002 gmc sonoma ex cab.


Should be attached to the fuel rail. The fuel rail connects all of the fuel injectors. The regulator will have a vacuum line on it.

Dec 09, 2009 | 2002 GMC Sonoma Extended Cab

1 Answer

I change the knock sensor in my chevy tahoe 2001 and still have the same code po 332


The problem is not the sensor but most likely the blue wire has an open circuit between the sensor and the computer aka the pcm ..You are going to have to look real close at the sensor end of the harness it may be a broken wire right inside the insulation , hard to find good luck pcm connector c1 is where the other end of the blue wire will end up ..there is nothing between the computer and the sensor. just wire an ohmmeter and some patience im sure you will find it...hope this info helps..

Nov 23, 2009 | 2001 Chevrolet Tahoe

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