Buy 1999 Oldsmobile Aurora Base Sedan 4.0L Oldsmobile V8 A/T Suspension Ride Height Sensor. Park Avenue - OEM Oldsmobile Part # 25604758

Link. Height. Sensor. Assembly - Auto Level Control. Suspension Ride.
Sensor that is used to determine the Height of the Suspension components.

Suspension Ride Height Sensor

Fits Aurora, Park Avenue, Riviera, Seville

Park Avenue. W/o realtime damping, soft ride.
Active Suspension System Height Sensor - Repair or Replace
If the ride height sensor has failed, you might not be able to adjust the ride height in your 1999 Oldsmobile Aurora, or it may be stuck at minimum height.