Question about 1996 Chevrolet Express

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Where is the low pressure line AC for Express 1500

I have a 2002 Chevy Express 1500 and need to add freon to the AC, but I can't locate the low pressure line. Anyone helps please! Thank you.

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  • Anonymous Mar 20, 2014

    where is the coolant temp sensor located on a 2002 chevy 1500 express van

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Look for the accumulator(silver can a/c lines go to) on the passenger side of engine area. The Low side charging port cap should be on the side of the accumulator.

Posted on Jun 23, 2009

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Add freon


You have to locate the low pressure line and connector port. Trace the two lines back to the firewall that come from the compressor. You will find 1 port on each line. They are usually covered by a plastic cap of some type that unscrews. Your refill hose, assuming you have a standard refill can with attached gauge, will only attached to the low pressure side. The two ports are slightly different in size. The low pressure side should be the larger of the two lines you are tracing from the compressor.

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Follow the large line from the firewall it is the low pressure line,it will have the service port on it.Use the one hose kit from the auto parts store and apply the freon can on one end,and clip on the other end on the service port,then start the engine turn the ac on high bloewer motor,and max air,or recirculation,

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