We have a 2007 Buick Lucerne that was "riding high" in the rear. We found that the air ride suspension sensor was broken and replaced with OEM. Now the air ride suspension pump is not engaging and the suspension is not working. We also purchased new shocks but the original ones weren't bad! Is there any way to reset the air ride suspension as we have tested all the fuses, relays and unhooking the battery for a time.... Nothing seems to work! Any suggestions?