Fluorescent Dye Injection

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Use only fluorescent dye approved by General Motors.

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

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 and Equipment .