JOLIET, Ill. -- The No. 1 Chevrolet driven by Martin Truex Jr. did not pass a post-race inspection when NASCAR officials discovered the right rear quarter panel was too high on the car.
Truex finished 16th in the LifeLock 400 race at Chicagoland Speedway.
The car will be taken back to the NASCAR Research and Development Center in Concord, N.C., for further evaluations. NASCAR officials will determine if the height problem is a violation that requires a penalty.
Any announcement of the process will come later this week, likely on Tuesday or Wednesday. Similar height situations have resulted in championship point reductions and fines in the past. Truex drives for Earnhardt Ganassi Racing.
Terry Blount covers motorsports for ESPN.com.