GM Service Manual Online
For 1990-2009 cars only

    Notice: When adding fluid or making a complete fluid change, always use power steering fluid meeting. Failure to use the proper fluid may cause hose and seal damage and fluid leaks.

  1. With engine off, front wheels off the ground, and wheels turned all the way to the left, check reservoir level. Add fluid, if necessary, to the FULL mark on the fluid level indicator.
  2. Important: It may require turning the wheels from side to side several times.

  3. Bleed the system by turning the wheels from side to side without hitting the stops.
  4. Keep the fluid level at the FULL mark. Fluid with air in it has a light tan appearance. This air must be eliminated from the fluid before normal steering action can be obtained.

  5. Start the engine. With the engine idling, check the fluid level. If necessary, add fluid to bring the level to the FULL mark.
  6. Return the wheels to the center position. Lower front wheels to the ground. Continue running the engine for 2 or 3 minutes.
  7. Road test the vehicle to make sure the steering functions normally and is free from noise.
  8. Important: Inspect for fluid leakage at connection points along the power steering system.

  9. Recheck the fluid level as described in steps 1, 2, and 3. Make sure the fluid level is at the FULL mark after the system has stabilized at its normal operating temperature.