He was 77.
Schembechler collapsed during the taping of a television show in Southfield and was taken by ambulance to an area hospital. His death at 11:42 a.m. was confirmed by Mike Dowd, chief investigator for the medical examiner's office in Oakland County.
The coaching legend fell ill at the studios at WXYZ-TV in Southfield, the station said. Schembechler also was hospitalized Oct. 20 after falling ill at the same location.
Police were sent to the station around 9:25 a.m. along with the city's fire department and escorted an ambulance to Providence Hospital, Southfield police spokesman John Harris said.
Schembechler met with the media earlier this week to discuss The Game.
During the news conference, the 77-year-old discussed the device that was implanted to regulate his heartbeat after he was hospitalized last month.
He said the device covered about half his chest and that doctors still were making adjustments to it.
Schembechler said he did not plan to attend the game in Columbus, Ohio, and that he didn't attend road games anymore.