Harmonic balance bad on car with only 50k
2007 Chevrolet Corvette engine complaints
Page 2 of 2: complaints 11 to 28 of 28, newest first, as owners wrote them.
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.
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.
Tl* 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 *bf
Needle bearings were found in oil pan. This is very common problems in gm vehicles as defective uncaged rocker arm design which causes rocker arms to easily break off bearings. Gm even issues a bulletin, but owners have to bear the cost of defective factory-parts. Broken needle bearings could end up in engine and destroy engine. Even owners replace broken rocker arms, they will fail because they're uncaged. To repair permanently, owners have to install caged rocker arms from non-factory part, which will nullify warranty. Owners are trapped in keep replacing rocker arms, or install non-defective non-factory caged rocker arms and lose warranty. Gm should recall this problem.
Tl* the contact owns a 2007 chevrolet corvette. The contact stated that the check engine warning indicator illuminated when the vehicle was started. The contact stated that the vehicle had been at the dealer five other times for the same warning indicator. Various components were repaired, but the failure recurred. The vehicle was at the contact's residence awaiting an appointment date. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 67,000. ..updated 07/31/17
While passing a large truck on a rural highway (fm 2004) the engine dropped a valve which as I have been informed is a known issue on these cars with the z06 ls7 engine having premature valve guide wear. The motor locked up after the piston hit the valve resulting in catastrophic engine damage causing the rear tires to lock up as a result of the engine locking. I was able to apply the clutch and regain control of the car and there was no accident other than a close call with the 18 wheeler I was trying to pass. There are numerous instances of the same issues I have seen while researching with this car from 2007 to 2013 7.0 liter engine from gm.
2007 chevrolet corvette z06 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 in 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.
Making a left turn in a stoplight inter-section the motor failed shutting off all power to the vehicle...motor failed due to excessive valve guide wear...vehicle was in motion on a city street
I have a 2007 corvette z06 with 43 k miles on it. I decided to have someone check my car because of the article I had read about the ls7 engines having valve guide issues. I was sure that they would be ok because the corvette sites say it is only a minor amount of heads that were machined in correctly. I was having other work done to my corvette so looked for a place that does mostly corvette service, I told the mechanic to check my valve guides while he was doing the other work I was sure they would of been ok. Upon my surprise he sent me videos showing me that they were not ok and needed to be repaired. It cost me $1,950.00 to have my heads cnc and new valve guides and springs installed the old ones were very bad I have videos showing this, the car was running with little valve noise at the time but were still bad mechanic would not even dyno the car after seeing how bad they were.
Tl* the contact owns a 2007 chevrolet corvette. While driving 45 MPH, the vehicle made an abnormal noise coming from the roof panel. In addition, after a routine inspection, the technician diagnosed that the vehicle had an oil leak. The vehicle was not diagnosed or repaired. The VIN was excluded from the federal safety agency campaign number: 09v491000 (structure). The manufacturer was notified of the failure. The failure mileage was approximately 27,000.
Valves of specifications. I had to pay out of pocket to get this fixed. If I would have dropped a valve while driving I could have loss control of my car. This is a known problem that chevrolet refuses to acknowledge 2007 z06 23884 miles 1 int .008" #1 exh .006" #3 int .0085" #3 exh .005" #5 int .0085" #5 exh .010" #7 int .009" #7 exh .005" #2 int .010" #2 exh .011" #4 int .010" #4 exh .012" #6 int .008" #6 exh .017" #8 int .007" #8 exh .006" max gm spec is .0037" which would roughly be .0075" on the wiggle test. So basiclly if the wiggle test is over .0075" the guides are out of spec.
Tl* the contact owns a 2007 chevrolet corvette. While driving approximately 50 MPH, the contact applied the clutch to shift from second to third gear. When the clutch was released, the vehicle jerked as if the brakes were applied and the engine stalled. The contact engaged the clutch and maneuvered to the emergency lane. The contact was unable to restart the engine. The vehicle was towed to the dealer where it was discovered that a valve had fallen into cylinder one. As a result, the piston and cylinder wall were fractured. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 32,500.
While driving the corvette, the engine shut down with no notice. The dash indicated the vehicle had entered accessory mode. Power steering, power brakes and engine power were completely gone. Within a few seconds, the dic went from 'accessory mode' to 'shift into park'. In order to do so, I had to coast to a safe place. Once I got to a spot where I could move off the road, I shifted to park and restarted the car. It then drove on as usual, but there was no check engine light or other indicator. This happened only once this day, however occurred three additional times within 10 miles on the 23rd of july. I contacted a gm service technician who works at a chevrolet dealership and he checked for any service bulletins or recalls. There were none for the corvette. I searched the internet, and corvette forum (I am a 10 year forum member). I found numerous instances of the ignition switch in 2005-2007 corvettes failing in this manner. I located an ignition switch and replaced it. This fixed the problem in 15 minutes and for less than $50 at dealer retail. I know from other nhstc recalls on vehicles that ignition switch failures are considered a critical and dangerous failure. The failures in the corvettes should be included in these recalls. If such a failure occurred during crossing traffic or while driving in close proximity interstate traffic, the results could easily be (and may already have been) deadly. Please consider initiating a recall, or including the affected years of corvette in an existing recall. My car is now fixed due to my ability to search forums and other web based information, however most corvette owners are not as involved or as web savvy and could be involved in a long drawn out problem/diagnosis process which would put their lives at risk. Thank you.
This car intermittently locks the steering column. No reason. The engine shuts off at speed.
Valves broke. Causing smoke and oil released on the highway. Valve guides broke. The engine heads failed causing an accident and a fire to the engine.
Corvette active handling system failure. 2007 corvette.
We were at a stop light and smelled oil burning. This happened a couple of times before we decided to look under the car. When we did there was oil all over the oil pan and all the way to the rear of the car. Took the car to the chevy dealer and they tightened the bolts on the oil pan. The service manager told us when we had it in that there was a service bulletin for this and the rear main seal had a problem with leaking and that it should be replaced if any one brought a vehicle in with this problem. Took the car home and drove for a couple days and still smelled oil. Looked under the car and there was oil all over again. This time it was also all over the back of the car and the rear wheels and brakes. Now that is a safety issue to me. Took the car back to the dealer. They kept it a week. Went to pick up the car and the service manager told us they replaced the seal but did not have to pull the motor??????? I said how did you do that? Maybe they could pull this off on some little old lady but not someone that knows something about cars. He went and talked to the guy that worked on the car and he said they didn't replace it, they put dye in and test drove it and didn't find a leak. Well by the time I got home there was oil all over again. In other words, they did not want to fix it because we bought it out of state. The car only had 3500 miles on it. The other problem was the windshield wipers did not work on high. You do not want to be in florida when it rains without wipers that work on high. After 3 tries, they finally had to cut the wiring harness because it was all corroded. I sure am glad I spent $70,000 for a brand new car. I would never take another vehicle to lott mather chevrolet in haines's city, fl or recommend them to anyone. As for buying my dream car.......lemon!
VIN decoder
See the problems and recalls for an exact car
Buying a used 2007 Chevrolet Corvette?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history