[1] It was the fourth consecutive year the event was held as part of the WeatherTech SportsCar Championship, and the eighth annual running of the race, counting the period between 2007 and 2013 when it was a round of the Rolex Sports Car Series and the American Le Mans Series respectively.
[3] The race was held at the fourteen-turn 2.350 mi (3.782 km) Belle Isle Park on June 3, 2017.
[4] With 108 points, PC was led by James French and Patricio O'Ward with a twenty-point advantage over Don Yount and Buddy Rice.
[5] In P, the Cadillac DPi-V.R received a 0.6 mm smaller air restrictor as well as a fuel capacity reduction of 2 liters and changes to the cars rear wing angle.
The Nissan Onroak DPi received a 0.5 mm reduction of refueling restriction and gained 1 liter of fuel capacity.
In GTD, Mercedes-AMG GT3 received a 20 kilogram weight increase and an air restrictor reduction of 0.5 millimeters.
[9] The first practice session took place at 8:30 am ET on Friday and ended with Christian Fittipaldi topping the charts for Mustang Sampling Racing, with a lap time of 1:23.750.
[10] The PC class was topped by the #38 Performance Tech Motorsports Oreca FLM09 of Patricio O'Ward with a time of 1:27.851.
[11] The second and final practice session took place at 1:00 pm ET on Friday and ended with Dane Cameron topping the charts for Whelen Engineering Racing, with a lap time of 1:23.058.
Regulations stipulated that teams nominate one qualifying driver, with the fastest laps determining each class' starting order.
[24] The result kept Bleekemolen and Keating atop the GTD Drivers' Championship while Negri Jr. and Segal advanced from seventh to fifth.
[24] Cadillac and Mercedes-AMG continued to top their respective Manufacturers' Championships, while Wayne Taylor Racing, Performance Tech Motorsports, and Riley Motorsports kept their respective advantages in the trio of Teams' Championships with seven races left in the season.
Jordan Taylor Eric Curran Joel Miller Christian Fittipaldi Jonathan Bomarito Stephen Simpson Ed Brown Patricio O'Ward Bruno Junqueira Ryan Lewis Katherine Legge Alessandro Balzan Madison Snow Bret Curtis Oswaldo Negri Jr. Sage Karam Jack Hawksworth Colin Braun Patrick Lindsey Daniel Morad Jeroen Mul Gunnar Jeannette