thought I would post up another video
http://www.denalitrucks.com/document...lering-high.qt
http://www.denalitrucks.com/document...bility-high.qt
http://www.denalitrucks.com/documents/Quadrasteer.wmv

 

Its a heavy option...

 

My old company truck was a 04 or 05 Yukon XL w/ quadra steer, it was cool having the quadra steer, the 4.10s w/ 245 tires sucked, try 3K rpm at 80. It was replaced with a 08 expedition EL, do I miss the qudra steer, yes, do I miss the rock hard ride, the awful fuel economy, no, even if the company paid for fuel I still felt bad. It was so slow too, couldn't turn the tires over in the rain it has so much tq mangament, it also sunk like a rock in sand, 4x4 or not.