from some other posts---
Gotta get in here before Beer comes up again and ask a stupid Dip$hit question: I'm fairly well versed in working on vehicles, and I even just recharged the A/C system in my Dodge Ram. HOWEVER, in searching for the LOW PRESSURE port on my wifeoid's '08 Acadia, I came across the port under the hood, front of the compartment, up top, next to the plastic cover over the radiator, stamped with a large "L" at the base of the port. One would presume this is the LOW PRESSURE port that my kit should connect to. But this port is larger in Diameter than the one on my Dodge and won't accept the connector on the "universal" kit I just bought at Walmart. So, is this really THE port? Or am I supposed to locate it elsewhere?? IF so, where is the LOW PRESSURE PORT located on this sled??
Below that port you found, WAY down there where it's really difficult to reach, up front, that's where the low port is. Wish I could explain it better than that, but I'm not the one who connected it. Flynn says it is straight below the high port, about 8 to 12 inches below it.
I thank you much. Lemme go out and take a look see and if I can do it, I'll take care of it right this minute.
Actually, 10 minutes later: Found it!! What a horrible spot. Awful close to one of the fans. Made me real nervous. Anyway, yes the system was a little low. Around 32 on the gauge. Filled it to approx. 40, about middle of the green zone on the gauge. Hopefully that will work a bit better now.