Follow the larger hose from the compressor Could be near the drier at the passenger side firewall its located between the evaporater and compressor. if that helps any
The smaller port is the Low side port.
on the back of the compressor
If the AC has R-12 in it you cannot service it yourself. It has to be taken to an authorized AC service station.
You can add freon on the low side service port that is located on the accumulator next to the firewall................
You would add R-134a to the low side port. It is on the larger diameter line coming out of the fire wall just before it enters into the accumulator. You can find a drawing of this on the link below. Just click on the "Find Your Car's Low Side Port" icon.
The low side ac port is mounted close to the firewall. While its beside of the high sided port, the sizes are different to prevent accidentally connecting to the wrong one.
Could be low on coolant.
Low side service port should be next to or around the left front or passenger strut tower. Or around the filter drier.
The low pressure port is the same place that you add Freon to your air conditioning system. The low pressure port will have a blue top.
The 1997 Chevy Lumina 3.1 liter low pressure air conditioning cycling switch can be found on the air conditioning compressor. The switch will be on the top of the compressor.
What is cylinder head torque specifications for 97 Chevy lumina 3.1 v6
yes it will fit