This can be caused by a failing transmission pressure control solenoid, when it starts to go bad it will cause low pressure which would cause the hard shift and clunking sound. Let me know if you have questions, thanks.
I've read things that leads me to believe there is more than one solenoid. Is this true and if so can is there any way you can identify the culprit solenoid?
Also did you have any thoughts about the noise from the steering column. The more I read about the 2001 Aurora both of my problems seem to be common to this vehicle. But I don't read anywhere what is causing the problem with the steering column, I only read that there is a problem.
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