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Check engine light with a P0332 code stored?

Tiny
RONALD DEVOLD
  • MEMBER
  • 2013 GMC SIERRA
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 107,456 MILES
I replaced the knock sensors with ACDELCO parts. The check engine light came back on a few days later with the same code.
Tuesday, January 24th, 2023 AT 3:09 PM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

The code is specific to bank 2. See pic 1 below. Did you replace the one on the passenger side of the engine compartment or were both replaced?

Next, when you tighten the new sensor, it is important that it is to specification. It should be tightened to 18 ft/lbs. Is that what was done?

Let me know.

Joe

See pic below.
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Tuesday, January 24th, 2023 AT 3:55 PM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
I changed both. And can't recall if I torqued it or not. Probably not. This was over 2 months ago.
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Tuesday, January 24th, 2023 AT 5:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

If by any chance they came loose, it will cause issues. Do me a favor. Take a look through the description and the diagnostics below. Let me know if you feel comfortable performing them. Also, if you need any other info on how to do it, let me know.

Let me know.

Joe

See pics below.
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+1
Wednesday, January 25th, 2023 AT 6:33 PM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
Okay.
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Thursday, January 26th, 2023 AT 2:41 AM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
I torque the sensors but I don't have a meter that measures hz.
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Saturday, January 28th, 2023 AT 9:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

I'm not sure what you mean by Hz. Hz stands for hertz. It is a unit of frequency used to measure sound waves.

The torque specs for the sensors is 18 ft/lbs. Let me know.

Take care and feel free to let me know if I can help.

Take care,

Joe
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Saturday, January 28th, 2023 AT 8:43 PM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
Sorry for the delay, but I performed a circuit test by connecting the multimeter leads on the knock sensor and set the meter to HZ and the reading fluctuated while I was tapping on the side of the engine.
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Saturday, June 17th, 2023 AT 4:56 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi and welcome back,

It sounds like it is working. Were you able to perform the diagnostics above? If the sensor is working, there is likely an issue with the wiring.

Let me know.

Joe
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Saturday, June 17th, 2023 AT 9:47 PM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
Okay. I printed the wiring diagram and I 'm trying to understand what am I testing. Is it low voltage reading going from the sensor to the ECU? I've attached the diagram that I am using.
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Wednesday, June 21st, 2023 AT 3:52 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

Pic 8 above explains how to test the sensor. Confirm it is good. Also, I attached two pics below. One is the sensor connector identifying the two pins. The second is the identifies the pin.

Let me know if this helps.

Joe

See pics below.
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Wednesday, June 21st, 2023 AT 11:28 PM

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