:lol::lol: My desert homie's little brother worked at the local Cadillac, GMC, Buick dealer, since he was young and agile he got most of the under dash stuff. They get a new Caddy back on warranty for this knocking noise, service manager gives it to the senior tech who finds nothing, then it goes to the front end specialist and same result, so on and so on. Finally it ends up with little brother "You guys don't find **** so ya give it to me? :wtf:" He crawls around under the dash nothing, under the seats and more nothing. Finally he gets frustrated and get's in to go for a ride in it, slams the driver's door and "knock" :wtf: slams the door again "knock". Off comes the door panel and inside he finds a Coke bottle on a string dangling from the door innards. Inside the bottle was a note and the note said "So? How many days did it take you to find this?" :BangHead: :rofl: