GM Service Manual Online
For 1990-2009 cars only

Foamy Milky Fluid

    • Inspect for air in the power steering system.
    • Inspect for low fluid level.

Low Pressure Due To Pump

Inspect for sticking vanes in rotor.

Growling Noise From Pump

    • Inspect for restricted inlet (pressure) hose.
    • Inspect for loose pump mounting bolts.
    • Inspect for air in the power steering system.