AC charge question.

[gregsmy]

Looks like my 2010 Suburban has a low Freon charge. The drier is freezing up and the clutch stays engaged on the compressor. It blows cool but not cold. When I first got the burb the ac was low and I found a leak at one of the charge ports that was a known issue. I added an adapter that was made to solve the leak. Went ahead and vacuumed it down and confirmed it to be leak free. That was probably 4-5 years ago. I was wondering if GM puts fluorescent dye in the system when it’s new?

 

[swathdiver]

Looks like my 2010 Suburban has a low Freon charge. The drier is freezing up and the clutch stays engaged on the compressor. It blows cool but not cold. When I first got the burb the ac was low and I found a leak at one of the charge ports that was a known issue. I added an adapter that was made to solve the leak. Went ahead and vacuumed it down and confirmed it to be leak free. That was probably 4-5 years ago. I was wondering if GM puts fluorescent dye in the system when it’s new?

I've not seen that in my trucks of the same vintage.