Low pressure AC fitting, where??

I went to check the freon levels in my 2001 silverado 5.3, and could not find a low pressure fitting ???

I see a high side fitting, which I know is not for charging. Am I missing something? I followed the bigger line coming from the firewall into the dryer, then followed it to compressor, but I see no fittings.

Dont tell me I have to get a pierce valve:banghead:
Or go to a stealership:banghead:

Thanks!!

i am pretty sure its on r the accumulator but i will check for sure

i am pretty sure its on r the accumulator but i will check for sure

Ok Thanks:smokin:

i am pretty sure its on r the accumulator but i will check for sure

O......K. I think I looked all over that thing but found it not. :banghead:

I dont see it:crying: