Mechanics

CHEVY LOW PRESSURE VALVE

1996 Chevrolet Tahoe

Air Conditioning problem
1996 Chevy Tahoe V8 Four Wheel Drive Automatic 200K miles

I'm trying to recharge my air conditioner, but can't remember which is the low pressure valve. How can I tell which one it is? Also, can you quickly run me through the whole procedure, it's been 2 years since I charged it last. I have the hose, pressure valve, and refrigerant.
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Daren8080
April 30, 2008.




The hose, pressure valve will only install on the low side. Add refrigerant with the air conditioning on and set to high -- engine running. Add enough to get the pressure gauge in the green area.

Tiny
Pear69
May 20, 2008.
ASE and GM suggest charging refrigerant on the low side.
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Tiny
Rhall77
May 20, 2008.

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