Fluorescent Dye Injection

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IMPORTANT: Use only fluorescent dye approved by General Motors.

J 41447 can be poured directly into a removed A/C component. See Special Tools .
J 46297-12 is injected into the low side port using J 46297 . See Special Tools .

Not all of the fluorescent dyes are compatible with PAG oil. Some types of dye 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. Use only one 7.39 ml (0.25 oz) charge.

To prevent false diagnosis, thoroughly clean any residual dye from the service port with a rag and the approved fluorescent dye cleaner J 43872 . See Special Tools .