Fluorescent Dye Injection

Important: J 41447  is the only A/C leak detection dye approved by General Motors.

• Not all of the R-134a dyes are compatible with PAG oil. Some dyes decrease the oil viscosity or may chemically react with the oil.
• R-134a leak detection dye requires time to work. Depending upon the leak rate, a leak may not become visible for between 15 minutes and 7 days.

Important:  Do NOT overcharge the A/C system with dye. This may cause reliability problems. Use only one 7.39 ml (0.25 oz) charge bottle of J 41447. 

• With the A/C system charged, add J 41447  to the A/C system using J 41459.  Follow the instructions provided with J 41459. 
• To prevent any false diagnosis, thoroughly clean any residual dye from the service port with a rag and the approved fluorescent dye cleaner J 43872. 
• The dye injection package contains a notice sticker. Complete the leak detection information and place the sticker near the charge label.