2006 Chevrolet Corvette Z06: engine failure

Filed Nov 21, 2017 · Electrical, Engine · 31,000 miles · AL

Valve rattle, not driving vehicle to keep from dropping valve......costs $4k for repair to heads....31000 miles... If I drive it and drop valve, will cost $18k to replace engine assembly.....long term value of vehicle decreases with non-matching numbers vehicle. One helluva way to treat customers that spend $85k on a vehicle.

Filed Oct 26, 2016 · Engine · 55,000 miles · OH

I had a friend who had an engine failure on this same engine due to a failed exhaust valve. The valve guides were extremely worn on his car causing the valve failure. Due to his failure and many others like it, I removed my heads and inspected. Sure enough, they were significantly beyond general motors published tolerances and required machining to repair. This was at significant cost to me and out of pocket. Gm knows of this issue and refuses to participate in repair costs for cars out of warranty even though it's a design flaw and safety concern. If and when the valve catastrophically fails, the engine will have a complete shut down, large amounts of smoke out the exhaust clouding the other drivers vision, and has the possibility of leaving oil slicks on the road surface.

Filed Feb 26, 2015 · Engine · 19,000 miles · IL

2006 z06 corvette engine was making an unusual noise. After doing some research and the finding, it was determined that the valvetrain on the engine may be pending failure. The heads were removed and valve train tolerance checked to be found way out of serviceable limits. Thus requiring repair. This was considered excessive wear for such a low mileage vehicle that was pending catastrophic engine failure if the repairs to the heads was not performed. In doing additional research, this appears to be quite common for the z06's 7.0l ls7 engine. Luckily my engine did not have a catastrophic failure because I took preventative measures at my own cost, but this design should be considered a failure and recalled. I was not going to risk a catastrophic engine failure possibly on the highway and put myself and others at risk. Please investigate.

Filed Oct 9, 2012 · Engine, Transmission · 39,340 miles · SD · fire

Massive engine failure due to a failed exhaust valve after inspection, car lost all power and was immobile after rolling to a stop. The 7 and 8 cylinder on the block were completely ventilated. This is a very common problem with 2006-2011 corvettes and many others have had the same issue.what happens is the head of the exhaust valve falls off and then it makes contact with the piston and takes out the block and piston and rods. Please investigate this as there is several hundred or more z06 equipped with the ls7 motor that has had the same issue. It is a safety concern and imho there should be some kind of recall on these motors.

Filed Mar 30, 2009 · Body · 22,000 miles · NM

I own a 2006 corvette z06 and there has previously been a recall on the roof panel. The roof panel has been making noises when going over bumps and turns, so I took it in to reliable chevrolet in albuquerque, nm. Upon further inspection, the technician noticed one of the bolts that holds the roof in place was seized up and the hardware used to perform the roof recall was not the correct hardware for the vehicle. The service writer stated that the roof will need to be replaced, as well as all hardware and possibly the headliner, but they would not cover it since the recall was already completed. When I contacted gm, they stated that since the recall had already been performed, I will have to pay out of pocket to fix it. I contacted courtesy chevrolet in san diego, the dealership that performed the original recall work, and they did not want to accept the responsibility. I have taken pictures of the seized bolt and incorrect hardware. Currently, the dealership will not give me a rental car since they are not assuming responsibility, yet they say my car is unsafe to drive as the roof may fly off. I await your prompt response as I would like this resolved immediately.