EVO one with RF6442w 06 duramax, goes thru the process of horn honking using the valet button, horn honks once to enter into program mode the light comes on steady under the yellow loop or the 4th led light, then it honks 5 more times and on the 5th honk it double honks really fast, i would assume to say hey im in program mode 5, then the 4led under yellow loop blinks red very rapidly and the blue LED does not come on the antenna, other weird thing is it won't connect to the flash link, so i can't go in and do a bug view, or look at the settings.. Talking with Robert today and he was saying the 4Th led should be on yellow to state in program mode. unless i misunderstood him