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I getting a groan noise when turning steering wheel left or right. Power steering has been checked and flushed. Do you guys think this is a sway bar bushing problem. Vette is an 2001 auto coupe with 50K miles.
Does it make the noise while turning the wheel at a stop? If so, it cannot be any part of the sway bar assembly as it's not even moving. Possible culprits would then include the steering knuckle, steering rack and power steering pump/fluid (which you said you already had checked).
I have a similar sound that is driving me nuts. But it is coming from inside the steering column. It will make this same moaning sound even when the engine is off.