Izzy1000

I bought a 2016 Z06/07. I had decided to buy another brand. When I tried the ZO6 that was it. The car pulled like a bear. But I started to have some serious issues.

1. 5000 miles--Engine blew up. Dealer rebuilt it with help from GM

2. As soon as the temp went above 70 the ECM would pull timing. 80% of the time I never got the 650hp that I paid for.

3. 12,000 miles-Electronics crashed. Screen, navigator, radio all went dead. It took a month to get the replacement parts.

4. The car has always used a lot of oil. I am in the middle of consumption test run by the dealer. The car now averages 500-600 miles per qt. Dealer said they will either rebuild the engine or replace it. The oil is getting into the combustion chamber and it burns up. I assume this also hurts performance.

5. Since the hp was not anywhere near the 650 I decided to go to the 100 octane calibration. It works great with 100 Octane gas at $10 a gal. I tried Torco and Bustane. They both work but it is not as strong as with the 100 Octane.

6. The car is an M7. A couple of months ago I started having transmission issues. A number of times it either poped out of first or I didn't get into 1st properly. So I watched it carefully and it still popped out of 1st a couple of times. When I first got the car the transmission was fantastic. Now I have trouble getting the car into 1st or 2nd easily.

I have had enough.

Drbob00

2016 Z07. AC is awful. I mean really bad. Gets hot here in Phoenix. Pretty much all summer I walk into the garage on my way to work, look at the Corvette. Groan. Take the F150 to work because the AC actually works in that.

09Z06pj

I feel your pain brother. First and foremost, they need to replace the motor. Period! This is what they should have done in the first place. The tranny sounds like an adjustment issue that several others around here have encountered. That should be easily rectified; hopefully. If GM refuses to replace the motor, get an attorney ASAP! Good luck to you.

DebRedZR1

Somewhere in this thread there is some info on the AC. Seems to be frequent concern.

Thomasmoto

Mine doesn't work well either. It's in and out all the time and, of course, it wouldn't do it at the dealership.

djnice

DebRedZR1

The question is has the OP requested a buyback or filed a lemon suit?

SharkgrayVetteZ06

2017 Corvette C7 Z06 (Z07 package) A8

Car is stock and transmission failed on me and needed to be replaced and that was all covered under warranty. The reason they gave me was that the speed sensor went bad, needed a new tranny. Took about 2 weeks, the first signs were the clutch slipping while driving on the freeway, I would hit the gas and the the revs would freely jump up into 6k range and then drop down and the car would start moving. First noticed this like a couple days before and thought it was just something that would go away. Then my car stopped moving at a gas station in drive or reverse. Turned it off and on and felt the clutch slipping so started heading home when the tranny just stopped working. Had to stop on the side of the freeway and wait for a tow truck. Dealership took care of it, hopefully it doesn't happen again.

cgarnerspeed252

Haha I love this comment, I currently own a 2017 Grandsport for my Youtube channel Cgarnerspeed252 but considering ordering a 2019 zo6 and your comment made me smile and probably will go through with ordering it haha

cgarnerspeed252

I am so sorry to hear your problems with your Zo6, you have given me good information before buying mine and for my Youtube channel CGarnerspeed252

Rdubfalco

When you say "Secondary Radiator" do you mean an additional radiator?
Thanks

Fastmikefree

That is correct. An additional radiator which is only possible on the M7. It takes place at the same spot as the transmission cooler installed on the A8.

cmichels1999

I believe you are referring to the following radiator. I just had this upgrade done to my 2015 Z06 M7. I did it in advance of track duty this spring/summer.

https://www.corvetteforum.com/forums...post1595790156

Sin4no1

Are you currently tracking you vehicle to have all this happen is such a short period of time?

Preston

Izzy1000

Don't know what more to do. Bought a 2016 Corvette ZO7 late 2015. At 5000 miles all the lifters, valves, guides & just about everything else in the left head were destroyed. The cam also had to be replaced. Dealer rebuilt the engine with help from GM. The car never overheats.

At 15,000 miles I noticed a power loss when the outside temperature reached about 70 degrees.
At about 18,000 miles the car lost the screen, radio, navigation and other things controlled by the screen. It took 6 weeks to fix it. Waiting for parts.

Around 20,000 miles I installed the 100 Octane Calibration. With 100 Octane gas the car pulled like a beast. Dealer had help from GM in making certain that it was installed correctly. GM engineer also said with 100 Octane gas the car actually has 740 HP. It sure feels like it. Once again the ECM started to reduce power once it reached about 70 degrees. It did not happen as often but it still happened.

At 23,000 miles the dealer ran an oil consumption test. I was getting about 300 miles to a qt. When they removed the heads 2 or 3 of the liners used to protect the pistons had large gashes. They did not know why. GM replaced the entire engine and some other parts.

I contacted GM outlining all of this and told them I want my $122,000 back. At first they said we are going to fix the car. It took about 3 weeks to get the car running. I am traveling so I have not picked the car up.
Pushed them again for the $122,000 and they said NO.
My attorney in Missouri handles Lemon law issues. He told me that every time I had a problem they fixed it. Lemon laws apply when GM attempts to fix the same problem 3 times and the problem is still there. I have had the car for a little over 2 years. Lemon law applies to the first 18 months.

I have had it!!!! This was my first Corvette. I was going to buy a Porsche gt3 but in 2015 it only came with auto trans. I wanted a stick. Tested the Corvette and it was very fast and held the track better then the gt3

Not So Fast

After reading a good deal of these posts I am pretty sure I have lost my desire to buy a C-7 Z06, I just don't need these headaches no matter how fast the car is, nope don't need it.
So I will keep my 2011 GS A-6 that has absolutely no problems whatsoever, and down the road for more ponies I'll go the A&A setup.
I really feel for you guys that are going thru this crap, it shouldn't be that way
Good luck
NSF

Izzy1000

I have a few friends with the new ZO6s. They have had some issues with the ZO6. It's rare for an M7 to overheat. My car never over heated. But I was losing power due to the ECM pulling power as it warmed up. Although we live in Calif we have a home in a small town in Missouri. Their are 3 new ZR1s in town. Appears that GM has released the new ZR1 without issues, but time will tell. If you wait 18 months I bet you can pick up a low mileage ZR1 for the same price a new ZO6 would cost.

Not So Fast

They have to be auto's for me, gave up yankin years ago so we'll see what pops up
NsF

djnice

I keep having problems with eDiff. It stops locking when components under the car get heat soaked. It doesn't throw codes so GM says tell customer to get lost. They refuse to acknowledge there is anything wrong. If it is around 60F ambient then it will cool down and go back to normal.

Drbob00

My 2016 M7 DOES overheat at the track if the ambient temperature is 90 or higher. First the power steering quits working. That's fun. Hitting a rumble strip at 100 plus when suddenly and without warning the steering weight increases by 10 fold. Then I get 1 to 2 more laps and it goes into limp mode. And that's with the heater running full blast, which is also fun. The heat coming out of the vents seems nearly enough to blister skin.