Constant code P0325

JONATHAN SHARIT

MEMBER
2015 CHEVROLET TRAVERSE
3.6L
6 CYL
4WD
AUTOMATIC
142,000 MILES

I replaced the engine at the suggestion of the Dealership with a low mileage engine. I still have a P0325 Code. I have replaced the knock sensors and with wiring connection. I am pretty sure I have the wires in the attached correctly. I use the diagram for AllDataDIy. The only thing I have not done is replace the pins in the harness connector for the ECM. Any suggestions would be great.

9 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,949 POSTS

Can you make me a short video of the engine running at idle? I need to hear the engine running before we can help you fix it. Th idea is if the engine has too much internal noise the knock sensor code will ever go away. You can upload it here with your response.

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Monday, June 27th, 2022 AT 2:12 PM

SQM

MECHANIC
6,383 POSTS

Hello,

This could be due to the wiring circuit or other engine issues.
How is the engine running?
Are you getting any noises?
I have attached the diagnostics for the code P0325 below.
Follow those steps as it can help you determine the issue.

Let me know of any questions.
Thank you.

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Monday, June 27th, 2022 AT 2:15 PM

JONATHAN SHARIT

MEMBER
5 POSTS

Here is a Video. If you hear something obvious. I may not hear it due to Cochlear implants.

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Tuesday, June 28th, 2022 AT 10:06 AM

KEN L

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Thanks for the video, yes, that engine has excessive internal noise. Did your last engine sound like that? It sounds like the timing chains and guides need to be replaced. I would call the dealer who installed the engine and tell them your problem. The code will not clear with the engine making that kind of noise.

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Tuesday, June 28th, 2022 AT 11:45 AM

JONATHAN SHARIT

MEMBER
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I installed the engine, and I installed those timing chains and guides. The timing chains were not brand new, they only had about one thousand miles on them, from the other engine. I knew I was making a mistake when I did that. I guess I will put a new set on it. Hopefully, I haven't busted anything else on it. Could it be an issue where I didn't get the timing set properly also? The chains, tensioners, and guides were tight when I installed them.

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Tuesday, June 28th, 2022 AT 2:03 PM

KEN L

MASTER CERTIFIED MECHANIC
42,949 POSTS

If the engine is out of time, it will make excessive noise. So, we need to make sure everything is lined up. I have added instructions and the timing marks for the timing chain in the diagrams below. Let me know how it goes. Here are the correct timing chain diagrams with timing marks and special tools needed. I also included the timing cover R&R, sorry about that. Check out the diagrams (below). Please let us know what happens.

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