distorted chimes

i have a 2001 sc2 with 20.000 miles on it & in immaculate condition. sometimes the key chimes sound very distorted like a wounded duck, & other times, they sound like new. what can i do about this? is there some electronic chime unit i can replace? i know there'a a bulletin on this, but it doesn't tell what the repair procedure is unless you pay for it.....

kinda sounds like a loose wire to me, try and find the chime unit, and chck the wire going into it, also check your grounds...

does anybody know the location of this unit? on the old cars, it was simply a buzzer on the fuse block on the steering column, but i don't know the location on the new cars being so high tech & such...