Thanks for letting me join this forum. My name is Al im in florida and just bought a 2002 tahoe 5.3 flex fuel model. I've been trying to check the car out to make sure its ok and not gonna mysteriously die on me lol. i had a diagnostic done on it and the code came up P0178 flex fuel sensor and found where its located. went under the car found it and its only one hose on it but not connected to nothing else but. Can anyone tell me where the hoses are supposed to be run i think they bypassed.