Question about 2001 Chevrolet Tahoe

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2001 Tahoe with front, rear air conditioning,, I need to add freon, where is the low pressure port? what appeares to be the low pressure port in the engin compartment ,close to the Hi pressure port will not accept the push on refill hose, could the low pressure port be in back by the rear thanks

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Posted on Sep 19, 2010


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1 Answer

Does air conditioning compressor have sensor for 2001 tahoe that can stop compressor from running

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Where is the A/C compressor on a 2001 Chevy Tahoe

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Where is the low pressure port for the air conditioning on my 2002 chevy tahoe

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How do i add freon to my 2001 chevy tahoe

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I have a 02 chev tahoe,with dual a/ cold air is blowing.compressor is cycling on/off at a fast pace.i see 2 ports on thin a/c line,but i think these are high pressure line ports?im tring to find low...

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You recharge the AC connecting to the low port.

You find the AC low pressure at the top of the compressor. Near the compressor you find two ports, the high port and low port.
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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 , often covered with plastic caps. Only one of the pipes will be cold, the line that is cold will lead you to the low port.

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Unfortunately I am aware of no pictures or diagrams. There are two connections, a low pressure and a high pressure connection. The high pressure connection is found between the engine and the firewall. The low pressure connection is in front of the engine along the inside lip of the hood closure. As you open your hood, it's located just in front of your lefty knee. The connection is on an aluminum tubing, and mine has a black screw cap on it. Not sure if the cap varies in colors, or whether your may have been removed. The connecting hose from your freon refigerant H134a will ONLY fit onto the low pressure connection. The charge is just a bit more than 2 pounds of freon. In a 2001 you may need to add more than i can if the car has never been recharged, but start with one can and see how it goes. You may also want to add a freon with a sealant just in case you have a small leak. One can is approximately 13 ounces.

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3 Answers

AC is not working

Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.


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Hi, my best advise is to have your air check for freon leaks ,low freon causes the compresor cluth to stop working ,this can cause the air to blow hot .......

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