I hate to say it but either the truck was reflashed, your grypon doesnt like you, or something in the works is possessed!
HAHA jk... but yeah I would guess something either fried the gryphon or your truck got reflashed... but dont take my words for much, im just guessing. your best bet would be to call Bill and see what he has to say about it. and if noone answers, call back until they do! lol