The Buick Open was a PGA Tourgolf tournament from 1958 to 2009. In 2007, the tournament was held at the end of June, a change from its traditional spot between The Open Championship and the PGA Championship. Regardless, many prominent players used it as a "tune-up" for the subsequent major.
Flint native, and PGA touring professional Larry Mancour had returned to Michigan to play in the Buick Open and stayed to build the Grand Blanc Golf Club. He then added nine holes at the Flint Elks Golf Club where he remained the professional for 20 years. He rescued the Buick Open when General Motors dropped sponsorship of the tournament. With local Buick dealers Mancour started the Little Buick Open in 1969. It drew players and fans and led to the rebirth of the Buick Open in 1977.
The Buick Open officially made its return to the PGA Tour in 1977 at the Flint Elks Club, and in 1978 the event returned to Warwick Hills G&CC, where it remained until its demise.
As in the 1970s, a series of pro-ams and other unofficial events now take place in Grand Blanc, with the AJGA's Randy Wise Open taking place at Warwick Hills and most pro-ams and a golf festival at the Jewel of Grand Blanc (the former Grand Blanc Golf Club).
In 2014, an unrelated tournament with the same name was started in China. The event is played on PGA Tour China.
The 17th hole at Warwick, a par 3, is known for having one of the rowdiest galleries in professional golf. Fans often created chants directed at particular golfers. The famed 17th hole was also known by locals as the second largest outdoor cocktail party in the world (presumably deferring to the annual Florida–Georgia college football game as the largest). Players at the tournament loved the hole because of the atmosphere it creates. "This is a great tournament to play in, it's a beer drinkers tournament," said John Daly.