Review on Enhance Cooling Performance with GM Genuine Parts 15-1119 Air Conditioning System Valve Core by Vaibhav Karger

Tried to use 2 "universal" conventional Schrader valves for the AC fill port on the low pressure side but they kept leaking. So far so good (a few months). Slightly higher flow rate than a regular replacement (like the original it replaced - looks pretty much the same as the original). FYI, the Aveo's high-side air conditioning system uses a "JRA" type valve (regular replacements seem to work fine). Do not use excessive torque (approximately 4 in-lbs) when inserting. Standard AC processes (either use a tool to replace the "standard core" without losing AC charge, or properly evacuate, replace valve, etc. etc.). In my case the original didn't leak, I was hoping it was my leak. . was not (there was an evaporator).