One problem related to electric power assist steering system has been reported for the 2007 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Chevrolet Impala based on all problems reported for the 2007 Impala.
I have a 2007 chevy Impala. It is used as a police car for my local county. Since getting the car in may of 2007, the steering wheel has locked 4 times while turning a corner. The car has electric power steering vs. Hydraulic like most cars. The most recent incident, I nearly struck another vehicle due to not being able to steer. The wheel locks anywhere from 2-4 seconds, then it finally releases. I called the dealership, and they stated they have received several other complaints similar to this on some of chevy's other models with electric steering. I have an appointment this week to get the problem looked at. However I feel this is a very serious problem and safety issue due to the fact of not being able to steer, and apparently it is not an isolated incident.