Does anyone know what size the high side AC port valve core is on a 2010 GC SXT with 3.8L? I got a service kit to change the valve cores on low and high side, but the high side has a really large valve core that doesn't match the size in the kit and is about 3 times the size of the low side. I would like to change it out before the shop fixes and recharges the system. Thanks.