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Home >> GMC >> 1987 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> System Servicing Precautions >> Before Opening The System
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Before Opening The System

Before disconnecting any lines or fittings, the system must be completely discharged using approved refrigerant recovery/recycling equipment.

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