1997 Chevrolet Lumina Air conditioning

lumina
airconditioning

#1

I have a 97 lumina, and I need to refill the R - 134a, but the low side service port and the high side service port are in the same spot. Which one is which? How can I tell which is the low side service service port.


#2

Your fill kit will only fit on the low side port. It’s the smaller (in diameter) of the two.