Abnormal, dragging, noise that feels like a brake problem, coming from front driver side when braking in stop and go traffic - noise louder when on downgrade on when there's more pressure.also at times loud clunking noise when reversing and applying service brake. dealership says its a normal noise, they have said that it is the fuel tank and that its fuel moving around. this abnormal noise can be heard and felt when applying brakes in step and go traffic. and at other times. this happens at all fuel levels, due tank at/1/2-3/4 and 1/4 . also when vehicle has been on a stationary position and you turn steering wheel to the left it makes a clunking sound, this only happens once after car moved. the dealer says its norma, how can i know if its true, can it be a safety concern?