GM brands will start on both class pole positions in tomorrow’s Chevrolet Sports Car Classic in Detroit, led by the GTP pole-winning No. 31 Cadillac Whelen V-Series.R of Jack Aitken and Earl Bamber.

Cadillac Whelen and Corvette Racing remain the teams to beat in practice for the IMSA Chevrolet Sports Car Classic in Detroit, to the delight of the GM representatives in front of their worldwide headquarters.

On-track action at the Chevrolet Detroit Grand Prix kicked off with the first IMSA WeatherTech SportsCar Championship free practice session of the day, with GM cars leading both classes in the first 90-minute session.

The No. 40 Cadillac Wayne Taylor Racing V-Series.R led a Cadillac top three lockout in opening practice for the StubHub Monterey SportsCar Championship at Laguna Seca.

In his first weekend for JDC-Miller MotorSports, Laurin Heinrich put the black and gold No. 5 JDC-Miller MotorSports Porsche 963 at the top of the leaderboard in opening practice for the IMSA Acura Grand Prix of Long Beach.

The No. 31 Cadillac Whelen V-Series.R has led from the drop of the green flag to the end of the first hour of the race.

As the sun begins to set over Daytona International Speedway, the No. 31 Cadillac Whelen V-Series.R now leads the 64th annual Rolex 24 At Daytona.

Of the 53 starters, 46 have made it to sunset at Michelin Raceway Road Atlanta, and with two hours left in the 28th Motul Petit Le Mans, the No. 31 Cadillac Whelen V-Series.R has taken the lead in the race.

Cadillac Whelen and driver Jack Aitken turned in the quickest lap around Michelin Raceway Road Atlanta in the first of three practice sessions.

Cadillac is finally on the board with its first win of the IMSA WeatherTech SportsCar Championship season after winning the Battle on the Bricks at IMS.