2005 t Silverado 1500 with Quadrasteer??

Look to purchase a a truck this one popped up and I am some what interested in it. It has 162,256 miles on it. That is not my issue, it has the Quadrasteer package with it. I know nothing of quadrasteer. Is there anyone here with some insight to this quadrasteer, to maybe help sway my decision to purchase or not to purchase this vehicle. Thanks

If you tow a lot it will be something you'll like. At low speeds it turns the rear wheels the opposite direction of the front up to like 15 degrees. At higher speeds it turns the rear wheels the same direction as the front. The latter helps with handling and quick lane changes.

is it a constant thing or are you able to shut it off and it acts like a regular rear end? how difficult is it to get adjusted to?