[CTS-V-TWIN]

Originally Posted by dhemrick

I have 4000 miles on my 2006 STS-V, and my car definitely doesn't do this. Turning the wheel is buttery smooth no matter what. I have to turn my wheel hard left while at a dead stop when backing out of my garage before preparing to go forward, and I have never noticed any grinding or chattering.

Just a guess, but could be the power steering pump or the belt driving the pump slipping. My steering pump went bad in my Silverado pickup a few years ago, and for a few months before it went out, there was slight a vibration (could be called chattering) in the steering wheel when turning hard. I could not hear it, but I could feel it in the wheel. I would describe it as the wheel feeling "nervous".

Eventually, the spindle driving the pump broke and the whole thing quit working. It was replaced under warranty, but try driving a 5500 lb truck with big tires and no power steering even for a day! Not fun. It now turns great and is way better than it ever was before with the old pump, so I probably got a bad one from day 1.

I'd say take it to the dealer. A Caddy should always be smooth.

I would say that is definitely not normal.

Thanks for the info. I will be contacting my local dealer now and see if I can drop it off ASAP. It didn't feel normal to me and when it comes to cars, I am very sensitive to everything and this threw up a red flag because it never did this when I first got the car.

Again, thank you.

SG