Rob Buckner’s tenure as Chevrolet’s IndyCar program manager will come to an end after the May 4 race at Barber Motorsports Park, and it’s for the best of reasons.

With Buckner and his wife preparing to welcome their first child towards of the end of May, he is set to hit the pause button after Barber, take some time at home as a father, and once he’s ready to return, he’ll assume a new title of Senior Manager GM Motorsports Propulsion Program Team, where he’ll oversee the majority of General Motors’ racing engine programs.

With GM Racing and powertrain veteran Russ O’Blenes having been promoted to lead the new Cadillac Formula 1 motor program, Buckner was named to step in and continue in his footsteps. Along with IndyCar, Buckner will oversee the engine side of GM’s NASCAR, IMSA GTP/WEC LMDh, and global GT3 racing with Corvette.