Hi Guys, just joined here and thought i would give my feed back.
Unfortunately it sounds like your car has been converted to a manual (mine has been to), it got done at the dealer. I found out after i brought it, because of this reason my car over revs in 5th, because they didn't change the entire thing. I have asked a few mechanics that deal with skylines regularly, and they came up with these reasons.
I think thats correct about the warning... even though how annoying it is
Yes u cant hear it outside, i get comments from passengers that my car is a truck, it is annoying as. i might try that wire cutting. Sounds like a plan. so thanks.