Replacing System Dye After Flushing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not add dye to the refrigerant system equipped with high voltage electric compressors. The only means of replenishing dye after flushing is by replacing component containing the dye. Currently a compatible dye wafer is contained in the O.E. desiccant package. Adding dye that is not compatible with the high voltage electric compressor may cause compressor damage and high voltage isolation faults.
To prevent false diagnosis, thoroughly clean any residual dye from the service port with a rag and the approved fluorescent dye cleaner GE-43872: cleaner.