Electric Power Steering PROBLEMS (Chevy Malibu C0545)

This 2010 Chevy Malibu has something wrong with the Electric Power Steering assist system. Customer says that the steering wheel "vibrates", but when the car showed up at the shop, there was NO ASSIST at all! Let s research the Power Steering system and give the customer an accurate recommendation on how to address this issue. THINKTOOL PROS: https://www.amazon.com/dp/B08SWH2KP4?ref=exp_pinehollowautodiagnostics_dp_vv_d ON SALE NOW................GET ONE! Enjoy! Ivan