Hi, here I´m again. I´m trying to cut off all the noises in my cutlass because they make me crazy!!! Recently I performed a major advance in quietness (I´ll post photos of what I hace to do) but now I hear other noises!!!! And now I think there´s something wrong with the hydraulic pump of the power steering. Everytime I make a turn I hear a continuos "tuuuuuummm" noise. I check the pump and the fluid level is ok. Could it be air in the system?