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Where is the knock sensor located on a 2004 chevy impala with a 3.4 engine

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  • Cars & Trucks Master
  • 21,873 Answers

Should be on the side of the block near the oil filter.

Posted on Mar 29, 2015

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6ya6ya
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Posted on Jan 02, 2017

tripletauto
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SOURCE: Where is the location of the knock sensor for a 2005 HD 2500 6.0

HAS TWO KNOCK SENSORS they are both under intake in valley of engine. remove intake and will see two black grommets they are under those best to replace both at same time

Posted on Jan 26, 2009

ftw1952
  • 10319 Answers

SOURCE: Where are the door sensors

inner door latch assemblies hold these sensors

Posted on May 24, 2009

  • 752 Answers

SOURCE: where are the knock sensors located on a 02 chevy

It is usually below the the cylinder head on the passenger side towards the back of the engine. It has a white single mushroom shaped connector.

Posted on Jan 30, 2010

  • 212 Answers

SOURCE: where is knock sensor located on 2004 chevy 2500Hd

Under intake manifold on top of block,you need to remove intake to access sensors there are two of them you can't miss them when intake is off. After replacing sensors you need a new intake gasket.

Posted on Apr 04, 2010

airjer995
  • 5332 Answers

SOURCE: where is the location of

if you look on the back side of the engine closest to the firewall there will be one in the exhaust manifold. That one will be the bank 1 sensor 1 O2 sensor.

If you look under the car there will be one right after the catalytic converter. That will be the bank 1 sensor 2 O2 sensor

Posted on Jul 06, 2011

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1 Answer

04 Chevy avalanche knock sensors location


Nathan, 2 Knock's are located under intake manifold.
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Between the engine and firewall.passenger side. by the oil filter. It has an oval plug.

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(440) Automatic Transmission Input Shaft Speed (A/T ISS) Sensor Assembly

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Where is the back knock sensor located on a 05 impala 3.4L. I already found the one in the front.


there is only one on that motor. there are 2 oil pressure sensor on the motor,but there is only 1 knock sensor

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Knock sensor where is it located 2004 impala 3.8l


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1 Answer

2002 Chevy Impala Sensor # 3


You didn't give the engine size, so I'll give what my manual shows.
The 3.4L engine----- 2nd one in from the left, in back of the engine.
The 3.8L engine------2nd one in from the left, in front of the engine.

Mar 12, 2009 | 2002 Chevrolet Impala

4 Answers

Knock sensor location


The knock Sensors are located under the Intake Manifold at the top of your engine. The top will have to be taken off along with the intake manifold. Knock Sensors in past silverados used to have a problem with leaking water that corroded the sensors from washing the engine. Most times when you go to replace the knock sensor you will have to replace both along with the wiring harness that includes the the gaskets the knock sensors are surrounded by. After that you have to check the resistance to make sure you dont have any problems and then reinstall all parts along with a new intake manifold gasket. A good mechanic can do this for you in a day and charge you around $400. If you try to go to some place like a chevy dealer you will pay over $800. This is from experience of just replacing mine 2 weeks ago.

Dec 23, 2008 | 2004 Chevrolet Silverado

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