I took my '23 Z06 coupe with 6,700 miles into the dealer yesterday for its free engine oil / trans filter change. I am aware that some engines have the ticking noise from the camshafts but I did not think mine had this problem. Yes, there is some noise but I thought it was normal due to the mechanical valve actuation. I have also heard engines idling on YouTube that had the tick and didn't feel mine was anywhere near that level. Anyway, just for peace of mind, I asked the service writer to have the tech check whether he felt my engine had the ticking noise. The response I received when I picked up the car is that the camshafts on the driver's side do have the tick noise and now they want to perform the service bulletin to realign the camshaft caps on Bank 1. Apparently there is an accelerometer that GM uses to analyze the tick that provides graphical data that is then compared to a recording from an engine without the issue. The estimated time to complete the procedure on Bank 1 is 9.9 hours.

Obviously I am not chomping at the bit to have someone tear into my camshafts unless it is absolutely necessary. I am wondering if there is a way to get a second opinion on this before I schedule the repair. I live just north of Detroit and would be happy to meet with someone in the area for further guidance. Maybe buy Dustin Gardner or Tadge a beer? Happy to do so

Thanks!

 

Man, that sucks. Sorry to hear. I don't know if it is a good idea to just ignore it at this point though. They no doubt have made record of it in their system and now if you refuse to address the issue, I would be worried that they might deny a warranty replacement engine if something catastrophic were to happen. I know it sucks, but if it were me, I'd have GM do it. If you are not comfortable with that particular dealer, find a very reputable one and have them do it. I just wouldnt ignore it now that you have that info.

 

Forgive my ignorance, but if the tick is ignored, what are the consequences?

Crazy to me that this is still occuring.

 

GM says no known damage caused by it. Merely an annoying noise. But I doubt we will ever know for sure.

 

It's a 2023; could be an early production engine.

 

Good point

 

OP, you realize getting the DCT filter changed at 6700 miles means you will need to get it changed again on your dime ($$$) between 7000 and 8000 miles (the spec is 7500 miles +- 500), don't you? Maybe the dealer said that is close enough, but it is Chevy that manages the warranty, not the dealer.

Sorry about the ticking.

 

I thought the "window" was +/- 1000 miles? That is what I heard on a YT video HPO recently posted since he got his changed at like 83xx miles iirc..

It would be nice to know what the "official" tolerance is on that window. I just got to my 1 year anniversary of having my Z06 and I also just recently passed the 5,000 mile mark, so not even close enough for me to use my free maintenance voucher for the oil and DCT filter change. I am going to try and see if I can redeem it when I am closer to the recommended 7500 mile mark, but not sure when that will be exactly.

 

This is newest guideline for the warranty reimbursement that the dealer was issued. Q & A section goes into '23. Everything in writing within GM bulletins or docs has always been +/-500 miles. Now how much leeway on the published +/- 500 miles?

There is an article form back in October 23 on GM tech news which does mention +/- 1000 miles. https://gm-techlink.com/?s=17972.

I will be in the 7000-8000 window which will rule out any what if's when the time comes.

 

Awesome info, thanks!

 

Rick Conti covered the “Window” issue that GM has most recently released. The most current policy is +/- 1000 miles, (6500-8500) or three years. I just had mine done at Campbell Chevrolet in Bowling Green (free) at 6,700 while there for the 30th Corvette Caravan. So you’re good to go.

 

Guys,
remember this is a completely new engine and transmission technology.
The fluid, i.e. the oil, is the cheapest investment and precaution for the engine and transmission
I give you a tip = regularly change the oil and filter in the engine and transmission
My friends on the race track with a GT3 Porsche do this after every day on the race track

Noise from the engine
If the noise doesn't bother you then leave it as it is, no damage can occur

But if you always rev your engine to maximum, the play should also be measured

I did this a lot with Italian engines in my younger years. I love this kind of work.
But be careful, the man who does this work has to know what he's doing, it's very delicate work that requires great concentration and very precise work. There must be no dirt, it has to be very clean like in a hospital.

 

Thanks guys. I appreciate your input. Yeah, I would be shocked if GM rejected a future warranty claim based on doing the oil service a couple hundred miles early. This is especially so given all that the car went through during my first couple hundred miles of ownership. Car developed a nasty oil leak prompting the removal of the engine and trans. Turned out to be a Tremec issue with the trans. Thankfully the tech at the dealer really knew what he was doing and performed the work perfectly. So, if GM wanted to get nit picky about mileage I will just remind them what they put me through with my brand new Z06! As for the ticking noise in the valve train, I am so tempted to let it go as I have doubts it is even present but I will probably go ahead with the repair and pray I won't regret it down the road.

 

Now after having just read your comments I am shifting back the other way towards letting it go. If GM says no harm will come to the engine and the dealer is cool with letting me "continue to monitor it" in writing maybe this is the way to go. Presumably with this option i could still decide to do the repair at any time while the drivetrain is still under warranty.

 

That motor looks so clean!

 

No ticking noise from my 2024 Z06

 

If it hasn't been bothering you, I would not have it done at this time. If it ever gets louder or you change your mind, it's already been identified by the dealer and should be no argument for doing it later. As others have stated, it doesn't impact the reliability.