Sebastien Bourdais, James Jakes and Sebastian Saavedra handed penalties after action in Detroit.
Pagenaud is the sixth different winner in seven races this season (Hinchcliffe, Hunter-Reay, Sato, Kanaan, Conway, Pagenaud).
Tagliani started the 97th running of the Indianapolis 500 Mile race in P11 and managed to advance four positions in only the first 10 laps.
Chevrolet has won three of the first four races of the season, and has collected four poles which includes Carpenter’s Indy 500 pole-winning accomplishment.
Remembering the turmoil in the IZOD IndyCar Series in 2012 prior the the 96th race in Indianapolis as we head into the 97th running of the Indy 500.
Joe Jennings, IndyCar Correspondent