Button is part of Hendrick Motorsports' all-star line-up for the Chevrolet Camaro ZL1 innovative car for this year's 24 Hours, alongside seven-time NASCAR Cup champion Jimmie Johnson and 2010 Le Mans winner Mike Rockenfeller.
Both Button and the Hendrick team believe the qualifying pace of the car, when it was four seconds faster than the leading GTE Am cars, exceeded expectations - although they do expect the race to be a tougher challenge.
