I have a 2005 Buick Terraza with 20,000 miles on it. Recently when the temp has got cold (30 degrees) the service stability and the service traction lights have came on. After I drive the van, the next time I start the van the lights are usually gone but then when I have been driving straight on a dry road at about 45 mph or so and hit a bump the van would pull, decelerate and swerve for a few seconds and the service stability light would come on. This has happened 4 times. I took it to the dealer and they found 5 codes but they say they can't help them figure what is wrong and all they can do is drive my van around until it does it again and hope they get a code that will help them. The codes were C0253/C0870/C0460/C0196/C0187. I found other people on line who had similar problems with these vehicles and printed suggestions for the dealer to check(steering wheel sensor and frayed wires). The dealer then found a green and blue wire from the forward engine harness routed from the ebcm underneath the inlet air box were completely rubbed through. They rubbed against the transmission bolt. Hopefully this will fix the problem. I guess you got to give some dealers help finding the problem with your vehicle. This is could be a problem with these type of GM vans and it could be very dangerous depending on what wires are frayed and when they malfunction the stable trak system could throw the van out of control which could lead to a deadly accident.

- Pendleton, NY, USA

For the second time, my traction control light came on and my "service stability system" light appeared. Luckily, this time I was at a red light and not driving and was able to have control of my vehicle, unlike the last time this happened. Upon examination at the dealer, found to have a "missing" traction control fuse, which was replaced, and regarding the "service stability system" alert - found the yaw rate sensor had an internal failure, which was replaced. How many times does this have to happen before Buick will take responsibility and realize that this vehicle is unsafe to drive" Buick tells me to talk to the dealer; the dealer refers me to Buick. Apparently no one cares that I am driving around in a very unsafe vehicle, unless an accident and personal injury or worse occurs. This time I had a friend and her son in my vehicle. I hate to even think what could have happened if I had been moving when this latest failure occurred. The last time this happened was horrific enough, and I was told the vehicle was fixed, obviously it wasn't. the only thing I would like from Buick and the dealer is my money back so that I can purchase a safe vehicle. For now, this will sit in my driveway, as there is no way that I will ever get behind the wheel of this vehicle again. Never again will I put my child, my friends or myself at risk. Is safety too much to ask for in a $30,000 vehicle? I have had 14 repairs made to this van in 18 months, with only 13,000 miles on it. I bought this vehicle in good faith, why won't Buick stand behind their product and do right by me" or as a dealer told me "you should have just wrecked the first time and then Buick would have done something."

- North Huntingdon, PA, USA

Noticed a grinding or rubbing noise in the rear of my 2005 Buick Terraza cxl. Have noticed twice that the message display indicates service stability system. When taken to dealership they are unable to duplicate problem and the computer has not registered any incidence. What, if anything, can or should be done to rectify this situation?

- Holiday, FL, USA

For the second time the stability traction malfunctioned while driving my Terraza. The brakes slammed on by themselves and the steering went out. This happened once before with my child in the car. After the first malfunction, Buick would not let me terminate my lease and guaranteed me this would never happen again. Reluctantly, I agreed to keep the car. Guess what, it happened again. I refuse to ever let my daughter or I to be in the car again. Even though I pleaded with Buick's customer service that I agreed to take the car back after the first malfunction, although very fearful, with their guarantee it wouldn't happen again, it did. They will not terminate my lease they told me I was still obligated to pay for the lease until the term was up and if I was too scared to drive it, that was my problem. Does someone have to get seriously injured or die from them to recall?

- Northvile, MI, USA

: the contact stated the brakes engaged three times while going 60 mph. Each time, this happened the asc (automatic stability control) light illuminated on the dash. The first time this occurred, the vehicle was towed to the dealership. Prior to this incident, the vehicle's ABS engaged only at slow speeds. To repair this problem the dealership installed a new computer in the vehicle. When the problem recurred, the vehicle was taken to the dealership where the sensor will be replaced. The contact was unaware of the type of sensor. Updated 7/5/2006 -

- Milwaukee, WI, USA

Yesterday January 8, 2005 we took a trip to a relatives house in Pennsylvania. On our way home and luckily for us in the town we live in, our terrazza started make a screeching noise and the brakes locked bringing the car to a grinding stop. It was the scariest thing that has ever happened to us. The car could not be driven even a few feet, the display panel said "stability control active". we were very fortunate that the car behind us was able to swerve out of our way or there would have been a serious accident. I can't help but wonder what would have happened if this incident happened 30 minutes before and we were on the highway traveling at highway speed. I know since I was in the car, I believe we would not be alive to tell you about this incident. We called on-star but they were unable to diagnose anything and called a tow truck to have the car towed to the nearest dealer, freehold Pontiac/Buick/GMC. The dealer was able to determine that it was a short in a wire under the dashboard and the car was repaired and ready for pick-up. I refused to pick the car up because I am afraid that if this happens again I might not survive nor will my family. The dealer agreed to keep the car another day and to provide us with further details about the wires tomorrow. This is a major safety issue and many GM models either have or will be equipped with this type of system soon. There is no way to disengage this system.

- Freehold, NJ, USA

I was driving on the highway switching lanes on dry pavement, clear day, and the traction control system or the stability control system engaged causing the vehicle to rapidly decelerate and swerve to the left. It happened to my wife and she called me crying saying she did not want to drive the car. I did not take her seriously, until she went out of town and the vehicle did the same to me on the highway. This traction control or stability control system has a problem and is a major safety concern. I tried to disengage the system before driving it on the highway to take it to the dealer and it happened again. The horn is hard to push and cause the horn to make a sound. Without a horn, the car is not safe.

- Little Rock, AR, USA