· Cadillac Owners Troll
2019 CT6 Sport 3.0TT,2015 Luxury ATS , 2016 ELR, and Volt
Sometimes the pump can ingest air and cause what you are describing. Check the tightness of the fittings on the pump and the rack. Any looseness on the low pressure side can cause this. It's not common and a bit of a long shot but it is a freeby to try. Also make sure the line from the reservoir to the pump is not kinked.