Hydraulic Power Assist Steering System problems of the 1999 Buick Regal

Power steering fails when turning to the right. Unit operates correctly when turning to the right, however there in intermittent power assist to the left. The unit failed when turning in a parking lot to the left, there was a pop followed by a complete loss of power assist to the left. The fluid level in the power steering resivoir is normal, how a slight pressure was observed when the cap was removed.

Almost caused accident, power steering pump and pressure hose replaced, problem not corrected. Steering to left is very difficult even after pump was replaced, as it was prior to pump being replaced.

My 1999 Buick Regal LS continues to demonstrate an occasional power steering failure. The failure occurs with a first start/cold start or after the vehicle has been sitting for a period of time after being operated. The problem is a lack of "power steering" when turning to the left, I. E. When pulling out of a parking space in a parking lot and a hard left turn is required. The situation is negated after the steering wheel is returned to a straight position or full right position. This occasional failure has been ongoing for more than 40,000 miles but has been more frequent with this winter's extreme cold weather. My vehicle currently has 99,000+ miles. The recent recall by gm of 1996-1998 Regals for this same problem has prompted my reporting of this failure with my vehicle.

When driving at any speed and making a turn, tires felt like they were in water. Also power steering felt loose.