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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Heating, Ventilation And Air Conditioning) >> Diagnostic Information and Procedures >> Leak Testing (R-134a) >> Refrigerant Leak Testing

Refrigerant Leak Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: All A/C system repairs must be verified using electronic leak detection. Dye detection may take up 2 or 3 days to be reliable.
NOTE: General Motors vehicles are now manufactured with fluorescent dye installed directly into the air conditioning (A/C) system.

The fluorescent dye mixes and flows with the polyalkylene glycol (PAG) oil throughout the refrigerant system.

Verifying some passive leaks may require using GE-50078  Electronic Leak Detector, even though the refrigerant system contains fluorescent dye.

The only time that adding additional fluorescent dye is required is after flushing the A/C system.

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