Clunking noise in front end 04 gtp!!!!

[ZR1Vette09]

strange, i get a very slight "clunking" noise in my back right wheel area. Only happens after the car has been parked in below freezing temperatures. Had the mechanics look at it, they said the trailing arm bolt was loose, that didn't fix it so they just told me not to worry about it.

[reallyfast1]

my dealer ship said it was the sub-frame and they would have to inject it with special foam or something and my luck when my car was undercoated they sprayed it in where they need to spray this stuff so i would have to pay to have it removed with some other special sauce and then pay for the other special stuff plus labour about 5-7 hours b/c it wasnt covered by the warrenty, im was only at 73000km... so i pretty much didnt care about the noise anymore and went and picked my car up 20min after she told me that, so after driving another 6 months and going down the drag strip the car doesnt make that noise anymore... so just drive the car it might stop eventually.. maybe.. im at 85+k now so??