GM Service Manual Online
For 1990-2009 cars only

Problem

Action

A pressure loss in the cylinder due to a worn piston ring or a scored housing bore.

  1. Disassemble the steering gear.
  2. Inspect the ring and the housing bore.
  3. Replace all worn parts, if necessary. Refer to Rack Piston and Worm Shaft Replacement - Off Vehicle .

Leakage at the valve rings and the valve body to the worm seal.

Disassemble the steering gear and replace the defective seals. Refer to Rack Piston and Worm Shaft Replacement - Off Vehicle .

Leakage at the valve body or a loose fitting spool.

Replace the valve. Refer to Steering Gear Valve Replacement - Off Vehicle .