GM Service Manual Online
For 1990-2009 cars only

Problem

Action

Excessive back pressure in the hoses or steering gear caused by restriction.

Locate and repair the restriction

Scored pressure plates, thrust plates, or rotor

  1. Replace the scored parts.
  2. Repair the pump. Refer to Power Steering Pump Disassemble .

Extreme wear of the cam ring

  1. Replace the cam ring.
  2. Repair the pump. Refer to Power Steering Pump Disassemble .