Air in the Power Steering System Caution
WARNING: This page is about a different car, the 2018 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
If the power steering system has been serviced, an accurate fluid level reading cannot be obtained unless air is bled from the steering system. The air in the fluid may cause pump cavitation noise and may cause pump damage over a period of time.