Fuel gauge was not working and I got the "Engine failsafe Prog" last night. Called the dealer early morning and they asked to bring it in. SA called back later and she said that they have to order the DME and new instrument cluster and my baby will be at dealer till Thursday. I hope I did not do any more damage as I drove 45 miles to dealer. Asked the same question to SA and she says it should be ok. This is the first time my 4.8 will be sleeping over at dealer. I am missing her already . I got a crappy 2006 Hertz Ford Taurus to drive for next few days.