gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Vacuum Check Valve HVAC > < Compressor Cut-Off/Cycling Switch|Page 7512
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Service Port HVAC: Locations

The high pressure fitting is located either in the high pressure vapor line or muffler, while the low pressure fitting is located on the accumulator.

Vacuum Check Valve HVAC > < Compressor Cut-Off/Cycling Switch|Page 7512