Two examples come to mind immediately. The sitcom The Goldbergs has the same title as one from the 1950s. And the drama series ER has basically the same title as an earlier sitcom called E/R. In short, it’s happened many times both with television series and movies.
I assume you’re mainly thinking of shows with a different premise, and not including re-boots or sequels to previous shows, such as Battlestar Galactica or The Twilight Zone.
The Bob Newhart Show was a variety show in 1961, not to be confused with The Bob Newhart Show, a situation comedy from 1978. Ditto with the variety show called Happy Days and the sitcom Happy Days, which arrived just four years later.
CBS ran a failed sitcom called The Simple Life in 1988. In 1993 Fox ran a reality show with the same name starring Paris Hilton and Nicole Richie.
NBC failed with a sitcom called Brothers and Sisters. ABC failed with a drama.
I remember the first New Amsterdam, and liked it. Nikolaj Coster-Waldau was pretty good in the lead, before he went on to play Jaime Lannister on Game of Thrones.