Refrigerant Leak Testing
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. 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-414471 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.