I had the same problem. Made an appointment with the dealer to have the oil changed, check the leak in the sunroof (still leaks and now I see there is a Rapid Response Recall for this) and the "turn left noise". Printed this thread and showed the Service counter guy the info within the thread of what to check for and what to do before replacing the power stearing pump. Took the repair tech for a ride to reproduce the noise, he heard it and said the problem is in the power steering system, will check it out. I told him about the info I brought and to check with the Service counter guy. I went off to the waiting room. After 1.5 hours they came back to tell me the power steering pump needs to be changed and they have to order it. I give them the benefit of the doubt seeing they are the repair experts, but asked if they checked to see it there was any TSB's on this or checked the STAR Case Number K10403532. They said they did and it said to change the pump. Then they go off to fix the leak in the sunroof. Long story short, after coming back a second time to replace the pump, the sunroof still leaks and the car still made noise when I turned left. The service guy kept telling me that I will get the survey and it wont be from the dealer and how to fill it out. Now talk about an image issue. After two days I fixed the noise myself by overfilling the power steering reservoir by 8mm above the "max" fill and a day later the noise went away and the level went down to 4mm above the "max" fill line. Must have been some extra air in the system. In my opinion, the dealer wasted my time and a perfectly good pump that might not have needed replacing. I dont think they wanted to know anything about the info I had and if it was credable. This guy made a few comments about the data and the forum. Not to mention I still have to bring it back to fix the sunroof leak. Will let you know when this issue and how many times it took is resolved.