Suspension package, special rally

Years 1984–88, 1991–92 Models 2

Query this via API →

Also described as Suspension, rally tuned

Also documented for GMC

Documented applications

Fiero (1984–1988)

1984–1987 Single-source

standard on the SE in 1984–1987 per the OSG; the rparts and Halderman lists read handling package

Firebird — Third generation (1982–1992)

1987–1988, 1991–1992 Single-source

Firebird years: 3rdgenformula option pages 1987–1988, 1991–1992

This page aggregates every documented appearance of Y99 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.