According to the Coachmen website, it has one gray tank. Not that a second couldn’t be an option. Do you have a black water valve and two gray water valves? And do you have a black tank level and two gray tank level indicators? If so, maybe you do have @ gray tanks. My FE 192RBS has an optional gray tank indicator but the indicator does nothing.
2019 Coachmen Freedom Express 192RBS
2018 F 150 Supercrew 6.5 bed 3.5 EB Max Tow