I got new rear shocks but still have rough ride at times. air level or switch on 2005 Lexus GX470

It started about a month on a trip. we got back and they put new shocks on but before they put them on they lifted the car and it started running smooth again. today got in the car and rough ride again after about 2 to 3 weeks. think maybe the switch may get stuck.

Asked by for the 2005 Lexus GX470
sounds like they have a air leak in the system. return for warranty issue