The 2013 GEICO 400 was a NASCAR Sprint Cup Series stock car race held on September 15, 2013, at Chicagoland Speedway in Joliet, Illinois, United States.

[4] Before the race, Matt Kenseth led the Drivers' Championship with 2,015 points, with Jimmie Johnson and Kyle Busch tied for second place with 2,012.

Clint Bowyer, and Dale Earnhardt Jr., Kurt Busch, Kasey Kahne, Ryan Newman, and Jeff Gordon rounded out the Chase field with 2,000 points each.

NASCAR had uncovered radio chatter between two Roush Fenway Racing affiliated teams (Penske and Front Row).

At 2:55 PM CT, NASCAR held a press conference to discuss the results and placed both Ford teams in question on probation for the rest of 2013.