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Where is the knock sensor located?

Tiny
FARRELL YABENY
  • MEMBER
  • 2018 CHEVROLET MALIBU
  • 1.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
Can't seem to locate the knock sensor for this year model. Need help.
Sunday, May 22nd, 2022 AT 4:39 PM

3 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

There are two knock sensors on this vehicle.
One is located on the passenger side of the engine, above the CV axle. The other one is located on the back of the engine below the cylinder head.
You will have to lift the vehicle to access them.

https://www.2carpros.com/articles/how-a-knock-sensor-works

I have attached diagrams below for your reference.

Let me know of any questions.

Thank you.
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Sunday, May 22nd, 2022 AT 4:52 PM
Tiny
NICKROSE
  • MEMBER
  • 1 POST
I can only find the one above the CV axle?
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Friday, December 8th, 2023 AT 1:29 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,109 POSTS
The other sensor is located above the alternator, you might need to remove it to access the knock sensor.
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Saturday, December 9th, 2023 AT 8:48 AM

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