It's a very strange noise comes from my astra when i go over speed bumps, but only makes it when the car has been stood for a while i.e overnight, after the car is warm there is no creaking dunno..
It has done this for about two years now just in winter times. I had Vaux look at it last year and they could not find anything and just had my car serviced now and the mech also could not find anything either.
Any ideas? it's not bothering me just would like to know if it can be resolved.