Greetings and happy holidays! Thanks in advance for reading and sharing your experience. SITUATION MAKE: CHEVROLET MODEL: SILVERADO 2500HD REGULAR CAB YEAR: 2001 TYPE: PICKUP ENGINE: GM VORTEC 8100 V8 8.1L (496 CID) ACCESSORY PACKAGE: LS ISSUE: The truck is in good shape for the age and has about 74,000 miles on it. Drove it all day yesterday making a thousand stops for last-minute Christmas stuff (good job there) and everything was fine - no weird sounds, trouble starting or other issues. Jumped in it this morning to go after some eggnog (disappeared last night somehow) and it would not start. I had bright lights, loud horn, and the door-open dinger was blaring as usual, but I got no crank at all. Instead all I could hear was this weird electrical buzzing sound.
Listen here: https://www.youtube.com/embed/eHYbQmNW7fg?rel=0&controls=0&showinfo=0
Tested the battery and it was at a full charge, so not that. But what?
Has anyone ever had, seen, or heard of this before?