Refrigerant Leak Testing
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Tools Required
- J 39400-A Halogen Leak Detector
- J 41447 R-134a A/C Tracer Dye-Box of 24
- J 41459 R-134a A/C Tracer Dye Injector
- J 42220 Universal 12V Leak Detection Lamp
- J 43872 Fluorescent Dye Cleaner
Important: General Motors vehicles are now manufactured with fluorescent dye installed directly into the A/C system.
The preferred method of leak testing is with the use of fluorescent dye. J 41447 is the only fluorescent dye approved by General Motors.
The fluorescent dye mixes and flows with the PAG oil throughout the refrigerant system.
Verifying some passive leaks may require using the J 39400-A , even though the A/C system contains fluorescent dye.
The only time that adding additional fluorescent dye is required is after flushing the A/C system.