My '03 DTS's load leveling raises for no reason. Sometimes it's fine and other times it will be up for no reason, even after its parked. When I go to drive it I never know if it will be up or down. There is a air ride sensor (RH REAR SENSOR,FWD,4.6L,ATOD,DTS) on ebay for $35.00 plus shipping. How do I test to see if it's the cause and if so would this be the part to replace? There's also a LR.