The RCA units didn't seem to hold up well and RW then switched to an LG system. No they have dropped the whole Home Theater and gone to a Sound Bar for the TV and a really cheap little BluRay player, at least that's the setup in our '16.
To replace what you have, I would check out places like Best Buy or maybe even Wally World for a small Home Theater system.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top