The Oldsmobile Achieva brake light requires 3057 and 2057 bulb sizes for the rear lighting system. Data for the provided specifications covers the period from 1992 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Oldsmobile Achieva uses the 3057 bulb for the brake light across the 1993-1998 model years. The 3057 is a dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W high filament and a 7W low filament, and it meets the ANSI standard for the US and Canada.
The 1992 Achieva brake light uses the 2057 bulb instead of the 3057. The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 26.9W high filament and an 8W low filament, and it is considered a brighter variant of the 1157.
The 3057 and 2057 are not interchangeable. The 3057 uses a wedge base while the 2057 uses a BAY15d bayonet base, meaning the socket type differs between the 1992 model and the 1993-1998 models.
The center high mount stop light on the Achieva uses the 912 bulb for the 1993-1998 model years. The 912 is a single-filament wedge bulb in the T15 form factor, rated at 12V and 12W, and it is a variant of the 921.
The 1992 Achieva center high mount stop light uses the 1156 bulb. The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W, which is a notably higher wattage than the 912 used in later model years.
The 1156 and 912 bulbs are not interchangeable. The 1156 uses a BA15s bayonet base while the 912 uses a wedge base, reflecting a socket change between the 1992 model and the 1993-1998 models for the center high mount stop light position.