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12XLYukon
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Joined
Feb 11, 2024
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Wednesday at 6:33 PM
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12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
Thanks for your advice! I checked the spark plugs and they’re all tight. Checked with a stethoscope and it’s not sounding like an...
Feb 15, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
Also the AFM system isn’t active. I should have mentioned that. I noticed when I bought it that it stays in V8 mode all the time.
Feb 14, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
I pulled the spark plug from that cylinder today actually. It was in pretty tight.
Feb 14, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
I went out and got a mechanics stethoscope and I’ve narrowed down where the noise is coming from I think. I can hear it best on the...
Feb 14, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
I use 5w30 Mobil One synthetic with an ACDelco filter. Here are some pictures of the driver side. I didn’t stop to take pictures of the...
Feb 13, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
Took off the passenger side valve cover and did the same thing. Everything looks okay nothings loose and everything is moving as it...
Feb 13, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
Took the valve cover off tonight. None of the rockers feel loose at all. Turned the engine over manually and couldn’t find any slack or...
Feb 12, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
What should I look for once I get the valve cover off?
Feb 11, 2024
12XLYukon
replied to the thread
2012 Yukon 6.2 Engine Noise
.
No misfires codes. Engines seems to run smooth.
Feb 11, 2024
12XLYukon
posted the thread
2012 Yukon 6.2 Engine Noise
in
Engine & Drivetrain
.
Hi all, I just recently bought a 2012 Yukon XL Denali with the 6.2. It has developed a noise that I can’t identify. It has 214k on the...
Feb 11, 2024
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