Question about some misc settings on a 1997 Trans AM WS.6.

Friend of mine with a 1995 TA noticed that my 1997 TA had a dimming dome light (as opposed to just on/off), silent turn signals (no click-clack), and doors didnt auto lock/unlock when you turned ignition on/off... All of these are good features. I had the car 5 years and recently sold car. Guy who bought car called me other day and said he noticed car now auto locks, blinkers make noise, and dome light no longer dims when going off...

Anyone know how to:

- turn off auto lock/unlock when you start and stop the car
- turn back on auto dim for courtesy/dome light
- disable the "clink" noise when turn signals flash...

Thought someone mentioned that you could adjust these settings via some complex button pushing sequence via the radio and others thought these were things you could have dealer tweak with a tech2.