Snowy conditions - about 2 inches on the ground; as I began to descend the hill near my home I tried to apply the brakes to keep a slow pace down the hill. Brakes failed and I began to slide down the hill. Steering was unresponsive; messages interchangeably flashed on the dashboard - 'service stabilitrak' and 'service traction control'. I had no control over the vehicle, and halfway down the hill jumped an 8" curb. Fortunate that the vehicle swerved to the right because there were parked cars to the left. Also, fortunate there were no people/children around, who could have been hit. $3000 damage to the underside of the vehicle. Very frightening to lose complete control of the car - I thought AWD, ABS, traction control and stabilitrak are supposed to help the driver maintain control of the vehicle in adverse conditions. Everything failed at once. Got the vehicle to the closest GM dealership; they ran diagnostics and surprise, everything checks out. They have no indication anything failed, so nothing further they can do except repair the physical damage. I experienced a complete failure of brakes, steering, traction, and electronic stability control and the dealership is telling me I did not - that the conditions were slick and that's what caused the accident. Isn't that when all of those safety features are supposed to engage? this is the first time I experienced a malfunction like this in this vehicle. Now I'm afraid to drive the vehicle, once it's fixed, esp. With other passengers. I may not even keep it.

- Wayne, NJ, USA

Approx. 380 miles, the service traction control & service stability track light came on. I took it to a Buick dealer in my town & they did not find anything wrong. Periodically this keeps happening & each time they cannot diagnose the problem. I was given a device that was plugged into the computer& set in the cup holder. If it happened again to push the button to record the code, which I did. It has been 3 weeks since I gave the device back & still no call to bring my car in. The last time it happened the car acted like it was not gripping the road & we felt a jolt when stopping or going forward from a stop. I am afraid it will cause more damage if not taken care of. I have 13,000 miles now & I bought my 2008 Enclave in July 2007. It seems to be getting worse each time it happens. I have taken it to two different Buick dealers to no avail. The car handles a little different while it is going on. I am afraid it could cause me to get into an accident.

- Merced, CA, USA