The contact owns a 2007 Chevrolet Corvette. The contact stated the engine of the vehicle was replaced because he wanted to update the engine. The contact stated that once the engine was replaced the vehicle would not start. The dealer diagnosed the vehicle and stated that 5 cylinder fractured causing the engine to lock up. The manufacturer was contacted and provided no further assistance. The failure mileage was 0.

- Roswell, NM, USA

On 2/24/18 while driving the vehicle in first gear taking off from a stoplight averaging a speed no higher than 30mph and not yet entering 2nd gear the vehicle made a loud screeching noise from the motor area and then abruptly stopped and shut off the engine. A dashboard warning of reduced motor speed appeared and the vehicle stayed in accessory mode only allowing the interior electrical systems to operate. The roadway that I was on being 3 lanes wide and at time of engine failure I was in the middle lane, I was forced to attempt to take vehicle off main roadway onto a side street. Being that the engine abruptly stopped, speed was lost rather quickly putting me in a dangerous situation where the vehicles behind me and next to me could potentially hit me endangering my safety. Additionally I had to cross over in front of oncoming traffic as the only available safe stop was a side street was on the opposite side of road. At that point I was able to stop the vehicle off the roadway onto a side street where the vehicle was then towed back to our residence. The vehicle was then later towed to our mechanic where bore scope inspection revealed a thrown piston and rod. At that time we authorized a tear down to be completed by the mechanic that revealed a thrown piston and rod in the 1st cylinder, which we have since found out is a known and common cylinder to fail. The rod was thrown through the block and piston shattering which made this catastrophic motor failure not allowing repair to be completed and the only option being a full motor replacement. The mechanic advised this was due to a faulty valve in the cylinder head. Symptoms I feel may have been related and ultimately contributed to this failure date back as far as the date I purchased the vehicle on 4/2/16 where vehicle engine made irregular noises. Vehicle was seen 4/18/16 by Chevy stating noises normal and characteristic to alternator, as well as 11/14/17 when a cylinder 3 injector malfunction was detected.

- Bakersfield, CA, USA

The contact owns a 2007 Chevrolet Corvette. The contact stated that while the vehicle was parked in his garage with the engine off, the contact turned on the accessory switch which caused the engine to start. Once the engine started, the vehicle began to roll backward with the driver-side door open which caused the contact to be knocked over. The contact was dragged with the vehicle out of his garage as the driver's side door was caught by a part of the house garage door jamb which folded the door. The driver door detached the vehicle as the driver-side window burst and damaged the interior door panel. The contact was able to roll free from the vehicle once it left the garage; the vehicle rolled into his neighbor's landscaping which caused the vehicle to stop. The contact suffered cuts and scrapes to the right side of his back, buttocks, arm, ankle, as well as, his left and right legs. The contact did not seek medical attention. A police report was not filed. The contact drove the vehicle back into the garage and later had it towed to an independent body shop. The contact called a dealer where they informed him that there were no recalls on his vehicle. The contact attempted to reach the manufacturer but was kept on indefinite hold. The vehicle had yet to be repaired. The failure mileage was approximately 7,800.

- Topeka, KS, USA

After starting the vehicle I am unable to shift out of park. This endangers both myself and a passenger if I need to move the car quickly in case of fire or another vehicle or object coming toward me. It also endangers other passengers in vehicles I may be blocking because they are unable to move. There are many other C6 Corvettes with this same problem documented per the Corvette Forum and YouTube.

- Farmington, NM, USA

The contact owns a 2007 Chevrolet Corvette. The contact initially smelled an abnormal fuel odor emitting from the vehicle while driving at various speeds. The contact also noticed spots around his left rear tire in his driveway. The contact took the vehicle to an independent mechanic where they diagnosed the vehicle with a defective fuel pump, and the fuel pump was replaced. Since the repair, the contact stated that his fuel gauge had become defective and would give false readings. The contact spoke with burns Chevrolet of gaffney (101 peachoid rd, gaffney, SC 29341) where he attempted to purchase a fuel pump but was unsuccessful. The manufacturer had yet to be notified of the failure. The fuel gauge had not been repaired. The failure mileage was approximately 60,100.

- Gaffney, SC, USA

I was participating in a high performance driving education (hpde) event and was driving my car going approximately 50 mph on the Virginia international raceway (vir) on Tuesday afternoon, June 27, 2017, when it seemed to loose acceleration. I drove further on the track and still did not have normal acceleration and I saw blue smoke coming out the exhaust so I exited the track and when I got in the engine stopped. Several mechanic type people familiar with Corvettes looked at my car engine and instructed me to try to start it, which I was able to do and again blue exhaust smoke came out. I turned off the engine and had it towed to my car dealer, holiday Chevrolet in williamsburg, va. Their mechanics determined that the exhaust valve in cylinder #1 dropped from the head into the cylinder and eventually exited the engine through the exhaust port and into the catalytic converter. The mechanic determined that the engine block was damaged beyond repair and an entire engine replacement was required, which is what I did.

- Williamsburg, VA, USA

I purchased my Corvette in 2013. It had 11050 miles on it. I drove it for 3 months. I was driving one day and it dropped the number #1 cylinder valve and threw a piston out the motor. It had 12600 miles on it when this happen. Their has been several Corvette owners with this same issue. I feel GMC is reliable for this is issue and needs to take responsibility for it.

- Knoxville, TN, USA

The contact owns a 2007 Chevrolet Corvette. The contact stated that while driving at an unknown speed, there was an abnormal popping sound coming from the vehicle. The vehicle became inoperable. The vehicle was towed to an independent mechanic where it was diagnosed that the exhaust valve and number one cylinder failed and needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 12,000.

- Knoxville, TN, USA

2007 Chevrolet Corvette zos with LS7 engine - excessive engine valve guide wear - per the GM valve wiggle test my car was found to have up to 3 times the acceptable engine valve to guide clearance at 24,139 miles. Some LS7 engines have had this issue, breaking a valve due to the excessive clearance causing the engine block to break open, spilling oil onto the rear tires while ln forward motion causing a serious safety concern. Due to the safety concern the engine was disassembled and repaired. GM has known of this issue and replaced many LS7 engines which did explode due to the valve guide wear issue.

- Muscle Shoals, AL, USA

The head issue valve guide on the heads was completely out of spec....have repaired car twice because of this issue '.

- Grand Prairie, TX, USA

Car goes into deferred engine power. Replaced throttle body 3 times. The car starts to vibrate and then shuts down. This is dangerous for the driver and could get killed. We have checked engine leaks, sensors, etc. The car will drive okey for a little while and then engine light goes on and then starts to vibrate and shuts down and stops. I have to wait a little while, sometimes it will start up and sometimes will not. I cannot drive long distances or at night for fear the car will just stop. This is dangerous. I do not know what to do. Brought to the dealer and they just say, get a new vette, they do not take this problem seriously. Nor do their technicians know how to work on a vette. They have had the directions on how to take care of the problem in a notebook. One tech left his notes in my car. If a doctor had to take out his notes to see how to do a surgery, I wouldn't go to him. Would you? '

- Baton Rouge, LA, USA

Harmonic balance bad on car with only 50K

- Wichita, KS, USA

Dangerous conditions. Exhaust valve design causes ear that eventually breaks exhaust valve and destroys engine. Exhaust valve loose enough to break and cause engine damage, possible fire and/or flammable fluid leakage. Https://www.youtube.com/watch?V=wtoa3vlgoes

- Santa Fe, TX, USA

My 10,000 mile 2007 heads are at ahp for rebuilding. They reported back that 1 exhaust and 3 intake guides were worn past the service limit. Several others were close or at the limit.

- Roanoke, IN, USA

Engine destroyed itself. With 56K miles on the engine a valve broke while running, falling into the cylinder where it was hit by the piston causing the piston to go into the engine block wall. There was a known issue with valves / valve guides in these engines. Chevy produced a service bulletin (#13-06-01-001) yet did nothing about the problem at the time. They've also refused to do anything to remedy my situation.

- Draper, UT, USA

'takata recall' just bought a 2007 Z06 corvette and lately I've been seeing a lot of complaints about the valve stems breaking and causing catastrophic engine failture causing the power steering and breaks to fail so now I have to pay $5000 + to get it serviced and every 10K miles do the same thing because the valve stem and guides get hot and start to wiggle

- San Pablo, CA, USA

At 65mph, driving down the highway, the car made a horrendous loud clattering sound and the motor locked up. Pulled to the side of the road to see oil pouring out the side of the engine block, where the valve was spit out - causing a huge hole in the side of the motor

- Spring, TX, USA

Engine light goes on and goes into deferred engine power. Have replaced throttle body twice. Car run great and then the engine light will go on and when I start the car it starts to violently vibrate. I turn off. Sit for about 10 minutes and then try to start again. Sometimes it works and sometimes not. Deferred engine power is dangerous. Sensors have been reset. This is an ongoing problem been to the dealer and they are price gouging. Problem has been going on for several months.

- Baton Rouge, LA, USA

The contact owns a 2007 Chevrolet Corvette. As soon as the contact started the vehicle, the traction control, anti-lock brake system, and service engine soon warning indicators illuminated. The vehicle was not taken to the dealer or an independent mechanic. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 36,000...updated 09/11/17

- Perrysville, IN, USA

My 2007 Chevrolet Corvette Z06 droped a valve while I was driving home. I was on a regular 45mph speed limit road in traffic when I realized the car was losing power and quickly pulled on the side of the road because there were cars in front and behind me. Luckily nobody was hurt but if I had been on a highway in the middle lane someone could have lost their life including me. From the second I realized the car was losing power to the point the engine shut off was a matter of 5 seconds maybe. After doing much research online I found out there is a very common problem with valve guides being out of spec in this model corvette.

- Lawrenceville, GA, USA