Two problems related to vehicle shudder have been reported for the 2011 Buick Regal. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Buick Regal based on all problems reported for the 2011 Regal.
I was driving down the city road and my car just shut off and lost all power to everything. I almost got hit. I then turned my car back on and the service stability trac light came on and the check engine light was flashing. I could nearly get it to go at all and my car was shaking and sputtering. It was the scariest thing I have ever dealt with. I had it put in the shop on 10/26/2018 and now it just happened to me again and its 03/26/2020.
53000 miles. When car is in motion. Car goes to low power more and check stabili-track message comes on. Car shakes bad at idle, idles too high,(almost to a point where brakes won't hold at a stop). Shit down and restart car goes back to normal conditions for short puerile of time. Check engine light comes on and code for throttle body malfunction is detected. Called Buick service number and was told it would be under warranty. Made appointment with dealership checked code and determined same code issue and it was not covered under warranty. Did. Not have them fix it yet. Cost is excessive and was told under warranty by manufacturer. Waiting on customer service call back. Car is unsafe to drive. Have seen many similar complaints but have seen nothing done by Buick or ntsb.