alright guys, i brought my mk4 astra van about 2 weeks ago it has been fine since 3 days ago, when i go over speed bumps (creaking noise) at a normal speed the front suspension is making a really strange noise i though it was the bumper scraping the bumps but it happens wen i go slow over speed bumps, could it be the shocks? it only makes this noise over speed bumps!!! pot holes fine!! any ideas??