You will run into this on many cars. It all depends on the options the car comes with as to how the car is wired. The manufacture just leaves out the things that are not needed or used.
Had a suspicion about this MAYDAY fuse, so I consulted the '05 owner's manual. That fuse was used for OnStar starting on the '05s, if equipped. Such a thing didn't exist on our '03s, so they must have been planning ahead.
03 Vibe base. Born 10/14/2002 06:07 AM
Auto, Moon & Tunes, power package. 143k
Neptune/dying clearcoat/primer grey.