For 1990-2009 cars

Notice: Refer to Air in the Power Steering System Notice in the Preface section.

Notice: When adding fluid or making a complete fluid change, always use a power steering fluid meeting GM Spec. No. 9985010 or equivalent. Fluid for cold climates is also available through GM Dealerships; refer to Specifications for further information. Failure to use the proper power steering fluid can cause power steering hose and seal damage, fluid leaks and pump failure.

1. Turn the wheels all the way to the left and add the power steering fluid to the MIN mark on the fluid level indicator.
2. Start the engine. With the engine running at fast idle, recheck the fluid level. If necessary, add fluid to bring the level up to the MIN mark.
3. Bleed the system by turning the wheels from side to side without reaching the stop at either end. Keep the fluid level at the MIN mark. The air must be eliminated from the fluid before normal steering action can be obtained.
4. Return the wheels to the center position. Continue running the engine for 2-3 minutes.
5. Road test the car to be sure the steering functions normally and is free from noise.
6. Recheck the fluid level. Ensure the fluid level is at the MAX mark after the system has stabilized at its normal operating temperature. Add fluid if necessary.