GM Service Manual Online
For 1990-2009 cars only

General Procedure

  1. Wipe the suspected area dry.
  2. Inspect the reservoir for overfilling.
  3. Inspect for fluid aeration and overflow.
  4. Inspect the hose connections. Tighten the hoses if necessary.
  5. Verify the exact point of leakage. The point from which the fluid is dripping is not necessarily the point where the system is leaking.
  6. When service is required, perform the following steps:
  7. 6.1. Disassemble the component.
    6.2. Clean the leakage area.
    6.3. Replace the leaking seal.
    6.4. Inspect the component sealing surfaces for damage.
    6.5. Reset the torque to correct specification, if required.
    6.6. Bleed the system.
  8. The following statements about the power steering systems may appear:
  9. • Fluid leakage on the garage floor
    • Fluid leaks visible on the rack and pinion gear or the pump
    • A growling noise, especially when parking, or when the engine is cold
    • Loss of power steering when parking
    • Heavy steering effort
  10. When troubleshooting these issues, look for an external leak in the power steering system.