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1996 Chevy Tahoe low pressure valve

Tiny
DAREN8080
  • MEMBER
  • 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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Wednesday, April 30th, 2008 AT 10:35 PM

2 Replies

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
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.
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Tuesday, May 20th, 2008 AT 7:41 AM
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
ASE and GM suggest charging refrigerant on the low side.
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Tuesday, May 20th, 2008 AT 8:14 AM

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