Where is the low side port for the air conditioner on a 2000 Oldsmobile Intrigue? I am trying to add some R134A but I am unable to attach my hose to a fitting that fits. I found a schrader fitting just behind the air filter at the top of a metal tube that has a U shape but the
hose I have that attaches to the can of R134A seems to be too small togo over this fitting. The hose i am using has a fittingwhere you pull back a plastic sleeve and put it over the fitting and then release the plastic sleeve and it is supposed to be attached.