Three problems related to lose power steering have been reported for the 2011 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Chevrolet Impala based on all problems reported for the 2011 Impala.
2/17/2015 was the second event. I was driving approx- 65 mph up a mountain when my electonic display panel showed stabilitrack/service traction control/vechile in reduced power. As the power suddenly reduced I lost power steering control and brake function. Since I was traveling at a up hill grade, I was barely able to jerk the steering wheel enough to roll across the lane of traffic beside me to the side of the road. I wasn't able to get out of the road completely and was almost hit by a logging truck. After removing the keys from the ignition for a few minutes, I restarted the car without any hesitation. The engine light still remains on at this time. I did contact onstar and have them run a diagnostic test which revealed a problem with supposed fuel system. I have not taken it to a dealership yet. After so many complaints on various sites that I have reviewed, looks like gm would do a recall and investigate the problem before someone loses their life.
Coming off of a freeway, the exit is a wide curve. About half way through the turn (going toward the right) the engine turned off. Lost all power steering and brakes. Fortunately, I am strong enough to be able to muscle the car through the rest of the curve and pull over to safety. The muscling caused minor injury to left shoulder. Car did restart without a problem.
While driving on thruway my 2011 chevy Impala lost power steering went due to a belt broke within the eninge compartment. Nearly lost control of car. After getting off the thruway,we noticed that a pully had come apart. Which caused the belt to disintegrate.