GM Service Manual Online
For 1990-2009 cars only

Note: Verify the exact point of the leak. The point from which the fluid is dripping is not necessarily the point at which the system is leaking. When service is required, clean the leak area upon disassembly, replace the leaking seal, check the component sealing surfaces for damage, and reset the torque bolt to specifications, where required.

Inspect the following:

    • The fluid reservoir for overfill
    • Fluid for aeration and overflow
    • The hoses for loose connections
    • The torsion bar, stub shaft, and adjuster seals for leaks
    • The component sealing surfaces for damage

External Leak Check

The purpose of this procedure is to pinpoint the location of the leak. In some cases, the leak can be easily located, but seepage-type leaks may be harder to find. To locate seepage leaks, use the following method:

  1. With the engine OFF, wipe dry the complete power steering system.
  2. Inspect the power steering fluid level in the pump's reservoir. Adjust the fluid level as necessary. Refer to Checking and Adding Power Steering Fluid.
  3. Caution: Do not hold the steering wheel in the full turn position longer than 5 seconds, as damage to the steering pump may result.

  4. Start the engine. Turn the steering wheel counterclockwise and clockwise from stop to stop several times.
  5. Find the exact area of the leak and repair it.