Which port does the hi and lo pressure switch install into

1995 GMC SONOMA
234,000 MILES
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JERRYD08
  • MEMBER
  • 1 POST
95 GMC Sonoma 2.2 cylinder engine. On the back of the a/c compressor? I just bought a new a/c compressor and the hi and lo pressure switched that install into the back of the compressor. I need to know which switch goes in which spot. Thanks
May 1, 2012 at 2:22 PM
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DJCL
  • ✓Experienced Mechanic
  • 767 POSTS
the hi pressure switch will go on the hi side of the compressor thats the side that has the line that runs to the condenced its a dk gree and white wire switch. the low side is on the side that has the low side line which will have the low side service port on it its out of the evap.the switch gets the lt green and white wire
May 1, 2012 at 4:02 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
The fittings are different and cannot be mixed up. The low side is the smaller fitting.
May 1, 2012 at 4:44 PM
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