The 25th Anniversary of the championship, sees the series head to Barber Motorsports Park in Birmingham, Ala.
O'Connell secured his second straight GT Drivers' Championship meanwhile Aschenbach achieved his third Pirelli World Challenge title.
Johnny O'Connell wins race,Andy Pilgrim third, Cadillac wins manufacturer title.
Johnny O'Connell (GT) and Jack Baldwin (GTS) took the Motul pole positions for the GoPro Grand Prix of Sonoma
Pirelli World Challenge is in action this weekend in Napa Valley, California with Jack Baldwin leading in the GTS Drivers' Championship
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The Pirelli World Challenge Round 11 at Mid-Ohio ended with Figge earning the first race of the double header weekend. Wilkins took the honors in GTS. In the Touring Car races held on Saturday, Cooper sweeps TC and Francis Jr, Davis split TCB.
On the street circuit in Toronto, Cadillac Racing finished 1-2 with O'Connell and Pilgrim. Aschenbach notched another victory GTS n his Camaro.
O'Connell, driving the No. 3 Cadillac Racing Cadillac CTS-V.R will start on pole in GT . Aschenbach, in the No. 10 Blackdog Speed Shop Chevrolet Camaro set a new lap record for the GTS class on the street circuit in Toronto.
Pirelli World Challenge was at Lime Rock Park this past weekend, and now the teams and their drivers are preparing for the Toronto Exhibition Place race on the streets in the Canadian city for the first time since 2010.
O'Connell and Pilgrim netted Cadillac Racing its first 1-2 finish of the season. Baldwin earned his third victory this year in his Porsche Cayman.
Pilgrim second, O'Connell third in the first race of the Pirelli World Challenge Cadillac Grand Prix of Lime Rock weekend.
In the first race of the weekend at Lime Rock Park, Mike Skeen won the GT Pirelli World Challenge race and Lawson Aschenbach took the honors in the GTS class.
Round 8 of the GT and GTS Pirelli World Challenge has begun with qualifying for the Cadillac Grand Prix of Lime Rock Park.
Pilgrim takes third on the Belle Isle temporary circuit.
Andy Pilgrim visited the Belle Isle circuit three weeks ago and had the chance to see the track improvements first hand.