Review on 🔧 GM Original Equipment Power Steering Pump - ACDelco 15909826 by Jonathan Abreu

I don't know what happened here but the pump ran fine for about 1 week and then the relief valve "Pssst" The first simple step was to remove the flow control/pressure relief valve and to my surprise it was rebuilt. The leading edge of the flow control valve was cut away and a replacement ring attached to it. I couldn't look into the hole to check for wear, but the pressure relief valve leaked air when I put a piece of plastic tubing on the end and blew through my mouth. The flow control valve was replaced with the old factory pump, now works perfectly.