1.car keeps overheating. Put antifreeze it and run for a while and it will overheat again. No antifreeze on ground but keeps losing the antifreeze. Took vehicle to mechanic and was told that the antifreeze is mixing with the oil that it has a cracked manifold gasket. Recommendation was replace engine. 2.took vehicle to the dealer and they said that the on board computer chip thing needs to be replaced and they informed me that is a known problem with the car but no recall is in place as of yet. The repair cost is over $1300.

- Marlton, NJ, USA

As I was driving down the road, I signaled for a left turn. When I signaled the turn, there was a buzzing noise in the steering column and the engine turned off, resulting in a complete loss of power to steering and brakes. Luckily, I was going about 10 mph and was able to stop the car, albeit in the middle of the street. I noticed the dashboard lights were on. The car restarted immediately and I drove it 1/2 block to a parking space. I subsequently took the car to fh dailey, the local Chevy dealer. They told me there was a problem with the BCM (body control module) that had caused the engine to shut off while the car was being driven. They are replacing the BCM. They did not seem particularly concerned about the problem and my impression is it is not unusual for them to encounter it. I am concerned that, had I been driving in traffic, on the highway, or on a curving road, the engine failure could have resulted in significant injury or fatality to myself or others.

- Oakland, CA, USA