Hydraulic Power Assist Steering System problems of the 1999 GMC Yukon

Unintended power assist to the right occurs when either turning left or going straight. Occurs at various speeds. ---- dims 11 ivoq entry posted after 12/12/02 cut-over to artemis-----------------769741.

We continue to replace these failing part on 1997 to 1999 Chevrolet and GMC fullsize c/k1500 trucks, tahoe's and suburban's. The failure of this part causes a driving hazard. No safety defect listed.

Consumer was traveling on highway and power steering went out without prior notice. Dealership was aware of problem.

While driving about any speed vehicle will stall and lose electrical power and power steering. Had taken vehicle to a technician. Technician told consumer that cause may had been with fuel injector sticking, and had happened four times, just like safety bulletin g99066b, may 2000.

Steering becomes erratic/ very loose/ much movement in steering wheel when bump in the road is encountered. Very hard to keep in a lane. Been to dealer for this problem twice/no results! I feel it is putting myself and others in danger.

Wet brake problem causes concern that brakes will lock when applied while driving in wet rainy conditions. Steering problems experienced while driving on freeway, can create situation of over steering, causing loss of control.

All electrical system power and steering was lost while driving. Please provide further details.