{"id":11766,"date":"2019-07-24T12:25:45","date_gmt":"2019-07-24T16:25:45","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=11766"},"modified":"2019-08-09T16:40:54","modified_gmt":"2019-08-09T20:40:54","slug":"hot-tips-for-a-c-service","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=11766","title":{"rendered":"Hot Tips for A\/C Service"},"content":{"rendered":"

When performing A\/C service on 2013-2019 GM passenger cars and trucks equipped with R-1234yf refrigerant, there are several procedures that must be followed in order to make a proper repair. After warranty repairs are completed, the warranty code on the printout produced by the GE-50300 or GE-50300-A R-1234yf A\/C machine is required to be included with the Repair Order.<\/span><\/p>\n

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R-1234yf Refrigerant Systems<\/b><\/span><\/p>\n

R-1234yf refrigerant systems require the use of specific A\/C compressor oils. A universal R-1234yf PAG (Polyalkylene Glycol) oil specifically engineered for GM vehicles with belt-driven A\/C compressors is available. (Fig. 18)<\/span><\/p>\n

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\"\"Fig. 18<\/b><\/span><\/p>\n

R-1234yf systems have unique low and high side fittings. Most vehicles using R-1234yf also have an Internal Heat Exchanger (IHX).<\/span><\/p>\n

To prevent accidental release of refrigerant and minimize safety concerns, the installation of any refrigerant service equipment to the vehicle shall only be done with the engine off and after the refrigerant high side pressure has been reduced (approximately 2\u20133\u2009minutes).<\/span><\/p>\n

TIP:<\/b> R-1234yf is heavier than air and can accumulate in low lying areas like service pits. Always work in a well-ventilated area and never release refrigerants into the atmosphere.<\/span><\/p>\n

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Tools and Equipment<\/b><\/span><\/p>\n

GE-50300 or GE-50300-A Recovery\/Recycle\/Recharge Machine for R-1234yf A\/C Systems (Fig. 19)<\/b><\/span><\/p>\n