I'm requesting some help from other 2009 4.6 owners to perform a quick test to determine if the steering wheel vibrates while idling in drive and the AC on. My steering wheel vibrates and the dealer isn't sure if it's a problem with my car or if they are made that way. He's trying to find a similar vehicle he can compare to. To perform the test, 1) start the car 2) turn on the AC 3)put left hand on the steering wheel 4) place foot on brake and shift into drive with right hand. 5) check if you notice steering wheel vibration once shifting into drive 6) alternate from drive to neutral and take notice if vibration comes and goes. My steering wheel vibration is very noticable and can get quite annoying in stop and go traffic. Annoying enough that I find myself shifting to neutral when stopped in traffic to make the vibration stop. Thanks in advance