The power steering on my car is going in and out.
General motors vehicles such as your Impala are well known for having power steering issues. First, check the level of your power steering fluid. If it is low, there is a leak somewhere that needs to be addressed before proceeding with any other diagnostics or repairs. If the level is full, suspect a problem with the power steering pump or rack and pinion. A certified technician from YourMechanic will be able to pinpoint and repair the cause of your intermittent power steering.
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