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Air conditioning question


lblumenthal

Question

I have a 1994 1500 Suburban. I think I just need to put a couple cans of C134A refrigerant in the air conditioner. Is there a posting or a picture that can show me how to add refigerant? I have the host to add the refrigerant. Also, do you add refrigerant to the rear AC unit separately from the the front unit?

 

Under the hood, I see the two AC valves. I know one is high pressure and the other is low pressure. I know I have to add the refrigerant at the low pressure valve. Which valve is the low pressure valve. One is very close to the compressor, the other is back closer to the firewall.

 

Thanks,

 

Lee

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