After blow
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The after blow feature is a retailer installed accessory. The after blow relay control circuit of the BCM and the after blow relay of the Instrument Panel Fuse Block are the items included in this option. The duration of the after blow sequence is determined by A/C operation, ambient air temperature and vehicle speed.