moms_z06

2016 Z06 - I see some posts about a whine when doing this, but not one about a growl or grind sound... have taken in several times, no one hears it. Last time it was there, they did the triple flush and reprogrammed because I had a shudder, didn't know that was happening...but glad they thought I did while under warranty. Now she's back in and waiting on verdicts, hope someone else may know/have experienced the same

trevor90

parts have been an issue for other cars as well, i had a zl1 in my shop for 2 months waiting for a curtain airbag. GM needs to be better. But unfortunately they probably won't, now with layoffs looming,

Lemans Blue

dermdo

I bought a 2016 z06 one owner car certified from the dealer with 23k miles in Aug of 2018, In Dec the air bag light came on, I have brought it back 5 time in the last 3 months for the same problem they fix it goes off for 2 wks then back on agaoin. They just told me they are sending an engineer from Chevy to look at the problem. They have been systematically replacing parts the service manager thinks its the airbag computer since it is intermittent and usually every 2 wks.

dermdo

I have had a grinding problem emitting from the rear whenever it goes into v4 mode. the noise can be load and annoying they have replaced some baffles in the muffler which I don't think helped but the service manger thinks its better.

need-for-speed

I am considering buying a new C7 Z06 and I just read through the entire thread. Kuddos to Deb for posting it up. I couldn't believe the flack she got when this thread was started.

And I thought I had thin skin You handled to "negative waves" very well Deb.

The thread is VERY informative. And since I've been a member here for a day or two, I know that these threads are highly biased towards the negative side. For every person that posts up a problem, there could be dozens, if not hundreds of owners who don't bother to post how great their cars were. Most of us know that

TBF

Since you mentioned it I would like to say my 2019 ZO6 is my 2nd C7 and seventh Corvette in all. The first C-7 was problem free til 35000 miles then the AC compressor failed / warranty fixed it. I traded it in when the warranty ran out.
The current ZO6 had an environment control info system display fail shortly after purchase. Warranty repaired it and replaced a door panel because the arm rest was not properly covered. Since then the car has been great.

Kaitlin007

Prefacing this with I track the car regularly and hard, so I'm pushing her to what I thought Chevy intended her to be used for. SUPER fun and most gorgeous car ever, so I'll manage the issues, but would be nice to have some resolved.

2016 A8 Z06, not sure of the packages since I got it used, Denver, Colorado (yeah, I know the air is thin and exacerbates cooling issues).

Issues:
- Multiple times overheated engine DIM warning at ambient 80-90 degrees. I combat this by short shifting now, never let it get over 5500 rpms. Thank goodness for flat torque curve up there...
- Overheated power steering system during track use at ambient 70 degrees - DIM warning and loss of power steering while on course (SUPER fun as a female with limited bicep strength!). Came back once the car cooled. Short shifting seems to help this issue too.

Car is at the dealer today to look into these issues before warranty expires - they think they can fix them. Maybe the power steering one (bulletin 1535?) but I'll believe it when I see it on the engine cooling for the automatic.

DKyam

2017 M7 Z06/7
Ontario, Canada
Right rear shock leaking, as well as the tranny leak. Going in to dealer on Thursday. We'll see what they say.

GotMoJo

Right on bro! You hit the nail on the head! Kudos to Deb, I personally want to hear about what problems the C7 has because I'm in the market for one.

Not So Fast

Understood and agree, unless you are one of the unfortunate ones
NSF

BrunoTheMellow

@Kaitlin007

There's a plastic splash shield just below the power steering motor. Remove this and that issue will go away. Friends 2017 a8 had the same problem 2 sessions in a row, removed it , no problem. Ive had it removed for 3 years of tracking. No issues.

A8 engine will overheat on track. 1 thing that will help is the 2019 radiator . It is twice as thick as yours. Otherwise youll have to go into the afternarket custom.solutions.

cmichels1999

I could please use some advice if anyone has time to help.

I purchased a 2015 M7 Z06 with 9,500 miles on it. When I purchased it I purchased the GM extended warranty from the Kerbeck Chevrolet dealership. I wanted the GM warranty as I do some HPDE events and wanted to ensure it was covered for track use. The warranty is the platinum coverage so no deductible and bumper to bumper coverage.

I recently was out on a new track on my first session and I was not driving the car hard. I don't think I got over 100mph. At the very end of the session the service rear axle, service stabilitrak and check engines lights came on. I pulled into pits and the car died. I had it towed to a local GM dealer (I was at a track out of town).

I got the call from the dealer that they ran a borescope camera and determined the piston ring came off and scored the inside of the cylinder. They indicated it needs a new engine. The dealership filed the warranty claim under the GM power-train warranty.

GM first wanted all my oil change receipts. I change my own oil so I sent them all the oil purchase receipts and the oil filter receipts. I always used the AC Delco oil filters PF64 (I may have the wrong part number but I was careful to use the OEM oil filters). I also always used the Mobile 1 5W-30 synthetic Dexos2 or (as the manual indicates to do for track use) the Mobile 1 15W-50 synthetic. My mechanic did one change but I provided the oil and oil filter so I know he used the right stuff, but he would anyways.

About one week later GM came back and said they wanted the ECU data to confirm no mods were done. The car is stock except for the GM radiator upgrade I had installed by a GM dealer. The dealership said from what they could tell it indicated no mods.

A few days later GM is now coming back and asking for a tear down of the engine. They are saying that the borescope film is not good enough. The GM dealership is saying that I have to approve the tear down cost in case the warranty does not cover it. This seems wrong to me as if GM does not cover this under the power-train factory warranty it certainly must cover it under the extended bumper to bumper warranty with no deductible. I am okay if GM wants to figure out the root cause but I don't think I should have to risk my dime on this. In addition, a licensed GM technician is doing the analysis and says it needs a new engine. What is the point of having a licensed technician if they won't trust their work? And even if they don't fully trust them, then surely the technician has provided enough evidence.

One last item, the service manager indicated that in a call with the regional manager GM was questioning this due to the track use. But there was nothing in the GM warranty technician communication that indicated anything of the sort. And based on all my forum reading GM covers the car for track use, which is why I wanted the GM extended warranty.

My questions are:
1. Is this common that I have to guarantee the payment of the tear down?
2. Should I go forward with okaying the work on the tear down?
3. Does this sound like GM is going to cover this claim or not based on the questions they are asking?
4. Do you think this will ultimately be covered by the warranty?

duanesZ06

I really don’t know what to tell you other than they owe you a new motor I don’t believe you should have to do anything else. Just tell them if the motor is bad you need to order me another one and get it put in ASAP. There are people on here that can tell you how to proceed and the people to contact. Bottom line they owe you a engine!!! Good luck keep us posted.

cmichels1999

Thank you for the response. Based on what you are saying it looks more likely than not that they will cover this. That makes me feel better.

cmichels1999

I authorized the work to take down the engine. The dealership finished this today and sent the pictures to GM. They are saying that if the cost of a rebuild is less than 70% of new engine then they will rebuild. The dealership estimates a rebuild is likely 40hrs of work vs. 25hrs or so for engine replacement.

Should I accept a rebuild? If not, then does anyone know who I should talk to or what steps I should take if they decide they want to rebuild instead of replace?

cmichels1999

After completing the take-down of the engine GM is now asking that they drain the oil and check for contaminants. We are now on two weeks of back and forth between GM and the dealership. I am open to any advice that someone has to offer

smjlosgatos

2016 Z06 convertible. Twice in the last year the convertible has gotten stuck in the down position. No warning no lights or dash warnings. Just stuck. And not locked in place so every time you go over 30 mph you get the excessive speed warning and it continues for every 5 minutes until you drop under 30. The "specialist" is having a hard time figuring out what is wrong. They had it two weeks the last time this happened. Today is day 8 and they still haven't figured it out this time. Some type of electrical.fault. Don't know if this is a Z06 problem, a convertible problem or my particular car problem. And the trunk.won't open with the key fob or the button in the car. You have to turn the key manually in the lock by the license plate.
Anyone else had this issue?

Not So Fast

^^^^^ You have to be frustrated as hell, and I don't blame you because that sucks. I went thru the same thing years ago with GM who couldn't fix a problem, had the vehicle for over 8 weeks and then it did it again, another long time at the stealership, no luck, so I sold the car or traded it in, I forget but it really is frustrating to pay for a new car and then have to go thru what you are.
NSF

djnice

They may be trying to determine if other parts of the engine are damaged from metal debris which could justify a new engine. There are engine builders and other experts on this site. You may try posting a separate thread about your issue to get attention and input.