My 2019 Silverado just lost all the oil at stop light (thank God it wasn't going down the interstate at 75mph). I had it towed to Dealership. They told me it was the crimp lines and it would be $800. I am out of the powertrain warranty but seeing how this is a common PROBLEM, I called GM and reported it. They are contacting the Dealership so fingers crossed it gets taken care of.