For Harvick, it was the first victory since Stewart-Haas Racing switched to Ford this season.
It was Ford’s seventh victory of the season.
Ford won eight Cup races last season, and seven came exclusively from Team Penske drivers.
Kyle Larson and Jamie McMurray started on the pole for Chip Ganassi Racing and hoped to give the owner a sweep of Sunday after Scott Dixon won the IndyCar race at Road America in Wisconsin.
But Larson, the points leader, was never a factor and finished 26th.
Kyle Larson, the NASCAR points leader, started on the pole at Sonoma in a Ganassi car.
Hamilton appeared to stop his car right in front of Vettel, causing Vettel to collide into him.
Vettel was given a 10-second stop-go penalty, but Hamilton lost valuable time changing a loose headrest at the same time that Vettel served his time penalty.
At Norwalk, Ohio, Steve Torrence raced to his fourth Top Fuel victory of the season, beating Doug Kalita in the Summit Racing Equipment NHRA Nationals.
Points leader Butner had his third victory of year, topping teammate Greg Anderson with a 6.601 at 210.50 in a Chevrolet Camaro.