The high pressure power steering hose will commonly leak fluid and should be replaced if this is the case.
Car Problem Reports
Pontiac Trans Sport High Pressure Power Steering Hose Can Leak Fluid
Pontiac Trans Sport Problem
Average Mileage: 190,500 mi (184,000 mi - 197,000 mi)
Visitor, 1992 Pontiac Trans Sport, 197,000 mi
The steering has always been loud even with the fluid full but it suddenly became very loud. Saw the fluid was empty, filled it up, drove 20 miles to work and by the time I left work that evening it was empty again. LOTS of fluid on the ground and when I ran it in park and cut the wheel to the left, it spray fluid from the high pressure power steering hose connection. could not replace myself because I could not get a wrench in at that angle.
Visitor, 1996 Pontiac Trans Sport, 184,000 mi
my ps hose leaks. we're in the process of replacing it.