Oh didn't mean to imply I added .92 kg, I was trying to put as much info I could. I did notice also front vent tube blowing warm air out and rear is colder and condensate is dripping front is not. A now expansion valve lines are just cool at front and warm going to rear. Pressure is in range for veh...

I have my wife's 2016 Chevy Tahoe that a/c had an evaporator leak. I replaced the evaporator and the expansion valve and seals. Checked the rear evaporator no leaks detected. I did vacuum the system and held a negative 30 vacuum for 30 minutes. The a/c was really cold and then just seemed to die or ...