GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Steering 🢒 Power Steering System 🢒 Whine Noise in Steering Pump

Possible Cause

Correction

The pump shaft has scoring.
  1. Replace the housing.
  2. Replace the shaft.
  3. Flush the system. Refer to Power Steering System Flushing .