GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Steering 🢒 Power Steering System 🢒 Foaming, Milky-Appearing Power Steering Fluid

Problem

Action

Air in the power steering fluid
  1. Inspect the power steering system for leaks.Refer to Power Steering Gear and Pump Leaks
  2. Bleed the power steering system. Refer to Power Steering System Bleeding .

The following conditions exist in the power steering fluid:

  1. Foamy fluid
  2. The fluid level is OK
  1. Remove the power steering pump.Refer to Power Steering Pump Replacement
  2. Inspect the soft plug for cracks.
  3. Inspect the housing for cracks.
  4. Replace the pump, if necessary. Refer to Power Steering Pump Replacement .
  5. Replace the housing, if necessary. Refer to Power Steering Pump Replacement .

Internal pump leakage

Inspect the power steering pump for leakage.

Refer to Power Steering Gear and Pump Leaks