I can't locate the fitting for refergerent for the air conditioning 97 Pontiac Montana
Start with the A/C compressor and find the large thick Aluminum line. It will have a small nozzle to attach the line to recharge the system. Not the thin one. It has Very High pressure. Hooking up to that line will cause the A/C can to explode. Most important item, Was the A/C working before? Was it cooling at all? Did you change any item about the A/C? If so, then you will to get it to a mechanic who can pull a vacuum on the system before u can recharge the A/C
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