1990 Pontiac Grand Prix

In 1990 the base model was dropped in favor of a sedan version, which entered production on September 12, 1989, and replaced the Pontiac 6000 and the Canada only Tempest. A notable introduction was the new STE, Special Touring Edition, which replaced the STE model of the Pontiac 6000, and an LE sedan was also available with a 2.3 liter Quad 4 engine and a three speed automatic, the first use of an inline four cylinder engine in a Grand Prix.