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Home >> GMC >> 1999 >> Forward Control 7.4 B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System >> Operation >> A/C Compressor High Pressure Cut-Off Switch

A/C Compressor High Pressure Cut-Off Switch

The A/C compressor high pressure cut-off switch will interrupt A/C compressor clutch operation if A/C refrigerant pressure reaches 410-450 psi (28.8-31.6 kg/cm2 ) to prevent damage to A/C system. This switch is located on rear of A/C compressor.