GM Service Manual Online
For 1990-2009 cars only

The lip seals covering the rotating shafts require special treatment. The following components use the lip seals:

    • The steering gear at the valve and at the pinion
    • The drive shaft of the pump

When a leak occurs in one of these areas, perform the following procedure:

  1. Inspect the sealing surfaces.
  2. Thoroughly clean the sealing surfaces.
  3. Replace the lip seals.

If the lip seal contact zone is corroded, clean the surface of the shaft with a crocus cloth.

Replace the shaft only if the following conditions occur:

    • Severe pitting is found.
    • The leakage cannot be stopped by first smoothing with crocus cloth.