In 1984, due to smaller sales of four-cylinder engines, the Chevrolet Flint Motor Plant (Plant Four) closed after millions of dollars in improvements several years earlier. The same year, the newly created Chevrolet-Pontiac-Canada Group briefly took over Chevrolet Manufacturing from Chevrolet Motor Division; soon, the newly formed Fisher Guide Division acquired the complex. Around 1987, the Chevrolet plant was taken over by AC Spark Plug and became AC Spark Plug Flint West. In 1988 it became AC Rochester Flint West, and in 1994 AC Delco Systems Flint West. In early 1995, it was renamed Delphi Flint West.