We were moving from South Carolina to Wisconsin which is a 1,000 mile trip. On the morning of February 9th, 2013 we were about to enter cincinnati on the second leg of our trip when all the sudden the dash displayed a message that said trak system failed, soon followed by another message indicating the engine power had been reduced. The vehicle went from 60 mph to approximately 20 mph and the engine began to shudder with a feeling of loss of firing cylinders, and loss of vehicle steering control. So we pulled over, read the book, and shut the car off like it said, waited 15 seconds and then turned the car back on. The car was fine and we finished that leg of the trip hoping nothing else would happen. It happened on a very busy stretch of I-75N near covington, ky and it could have caused a crash. My entire family was in the car. So I called and spoke to a GM technician at tire discounters in cincinnati who stated it probably is your throttle body as he had just repaired the same issue on another GM car. Being that it was Saturday, there was nothing I could do and we had to still travel an additional 300 miles to Wisconsin. The car only had 45,000 miles on it the day of incident. The next day February 10 2013 we continued our trip and right in the middle of Indiana the same issue happened and again we took the same action. Again it could have caused an accident but we were able to pull over. On Tuesday February 19, 2013 I took the car in to be looked at by andrew Chevrolet in glendale, wi and the diagnosis was the same. The throttle body had gone bad and would need to be repaired for $519. The service manager stated that they too had changed them on multiple cars. GM needs to recall the 2011 Traverse and repair this part before someone gets in an accident and gets killed. I also noticed this is the second time in three months NHTSA has received a complaint about this issue. Udpated 03/14/13

- Brown Deer, WI, USA

Purchased 2011 Traverse on Monday, by Tuesday evening the traction control and the stabilitrak service soon codes were showing. The present mileage is 440 and this started around 350 miles on odometer. Also, while backing out of driveway on incline put car in drive and let off brake began pressing gas, the car continued to roll backwards until I pressed the brake and got on the gas at the same time.

- Lucedale , MS, USA

Defective braking system includes stabilitrak and ABS system. The brand new vehicle has been serviced five times for braking failure. While waiting at a traffic light the ABS kicked in and the brake went to the floor. The sensors have been changed/debris cleaned/and frayed wires replaced. The vehicle is still not repaired.

- Southfield, MI, USA