Question about 2004 Chevrolet Suburban

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AC Low Pressure location on 2004 Chevy Suburban

Please advise of location of low presure side valve on AC system

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You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port.

The valve is covered a plastic cap covering it.
Near the compressor you find two ports, the high port and low port.

To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on.
Then turn off the care and touch the lines from compressor to the two ports covered with plastic caps. Only one of the pipes will be cold, the cold line will lead you to the low port.


Posted on Jun 18, 2009


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