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Jonty711

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About Jonty711

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  1. Engine Tick - 2015 GMC Sierra 5.3

    Interesting development. So this evening, I go for a small blast, and park up and leave the truck running. After 2 to 3 minutes of idling, the truck starts making the a noise similar to the under load tick, and sounds like water sloshing around. Sorry it it was hard to describe and only lasted 10 seconds.
  2. Engine Tick - 2015 GMC Sierra 5.3

    I get ya. It’s 98% perfect, it’s just a couple of little things that take the joy out of driving it. I have 1 year left on warranty.
  3. Engine Tick - 2015 GMC Sierra 5.3

    I would think it would throw a code. Let us know if you find anything.
  4. Engine Tick - 2015 GMC Sierra 5.3

    Kinda dangerous driving with the vac pump disconnected.
  5. Fuel Injectors ?

    Sometimes the smaller dealers are way better.
  6. Engine Tick - 2015 GMC Sierra 5.3

    So got under the truck last night with a plastic mallet. Nothing seems to be loose. Today went for a drive to try and define the parameters that set it off. I noticed that I can make the noise happen in v8 mode too, but the frequency has doubled over the v4 noise. I was able to get the truck to maintain velocity and rpms and switch from v4 to v8 and noticed the difference.
  7. Engine Tick - 2015 GMC Sierra 5.3

    What about pcv solenoid noise? I just can’t understand how it would be valvetrain noise as it only happens after warming up the engine.
  8. Engine Tick - 2015 GMC Sierra 5.3

    My thoughts too. So I wonder are the motor mounts the root cause?
  9. Engine Tick - 2015 GMC Sierra 5.3

    Mine stops when going over a bump like rail tracks. I wonder what the commonality is between both conditions, braking and the bump?
  10. Pinging

    I’d like to add pcv solenoid to that list too.
  11. Engine Tick - 2015 GMC Sierra 5.3

    There’s a catalytic converter in the drivers and passenger footwelll. on another note, I didn’t have any time to do any investigative work this weekend.
  12. Engine Tick - 2015 GMC Sierra 5.3

    I'm thinking it's the internals of the cat are rattling
  13. Bumper shells? https://www.ecoological.com/bumpershellz.html
  14. Engine Tick - 2015 GMC Sierra 5.3

    Well this weekend, I will be taking a rubber hammer to the exhaust and heat shielding to see if anything rattles under impact. If if I find anything I’ll report back. I was reading elsewhere, that the cat can disintegrate internally, and that this can cause a rattle.
  15. Engine Tick - 2015 GMC Sierra 5.3

    It’s hardly belt tensioner related?
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