2006 Chevrolet Corvette Engine Problems

“I was driving in s 35 MPH zone and it changed to 45 MPH. I was in 2 or 3rd gear and has just started up a slight incline and I was increasing speed when the car made a sudden jerk and loud almost a bang. I depressed the clutch and it stayed on the floor. I though that the clutch had came apart and I pulled the pedal up to see what was going on. The engine at that point was running very rough and would not hold speed or accelerate. I pulled into a parking lot and got my wife to pick me up. I then got my pickup and trailer and took the car to classic Chevrolet. …”

“I was concerned about excessive valve train noise and after reading several accounts of improperly machined heads by GM's supplier linamar, and that numerous vehicles have had valves drop, resulting in engine failure. As a result, after having been rebuffed by Chevrolet, I took my car with 36,000 miles on it to a Corvette specialty shop to have my valve guide clearance tested. I had several exhaust valve guides outside the maximum service specifications, indicating that a catastrophic engine failure was imminent. …”

“I started the car when it was cold, it began to squeal from the belts. I gave it a small rev and it squealed intensely, I mean very loudly! I opened the hood and belts were not moving. I could not move the car. The harmonic balancer had lost it's bond. I am just glad I was sitting still. At speed, the steering would have been lost, it could have killed me! I had the car towed to the shop, and it cost me $1000.00. Not good! I read that this happens alot. Bad design for sure. I should be reimbursed. What can I do? Chevy won't even talk to me about it. …”

“Started hearing squealing sounds a few weeks ago. Noticed the crankshaft pulley had a noticeable wobble. Did a google search & found multiple reports on forums, youtube and such of of others with the same problem. Also my friend with the same car but a newer year just had it replaced under warranty. My car is off warranty but a harmonic balancer should not wear out in six years with just 7,500 miles (yes, seven thousand five hundred). My 2000 ford expedition has 151k. Chevrolet wants about $1,000 to replace it.”

“Any quick search of the web will show that this car engine, the ls2 or 6.2 l engine has had a defect that GM has denied over the years and fails to stand behind after warranty; crank shaft pulley wobble and worn rubber gaskets on the harmonic balancer of the 2006 model year. Tech bulletins have been issued and this topic of pulley wobble and rubber gasket failure and is quite the talk on various Corvette forums. Since I am well behind warranty, I had to have this diagnosed through my licensed certified auto mechanic. This repair requires extensive labor time to repair. …”