Chevrolet Lumina Back Up Light Bulb Size

The Chevrolet Lumina back up light utilizes unique bulb sizes 2456, 3156, and 3057 depending on the specific version of the vehicle. Available data covers the range from 1990 to 2001.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1999-2001	2456
1998	3156
1996-1997	3057
1995	2456
1990-1994	3057

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, specialty application. 12V.	2456
ANSI standard (US & Canada). Single-filament wedge bulb (T25). 12V, 27W.	3156
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3057

Other Locations

Additional Notes

The Chevrolet Lumina back up light specifications cover model years 1990 through 2001 and reference three distinct ANSI-standard bulb types across that span: the 2456, 3156, and 3057.
The 3057 is the most frequently specified bulb across the Lumina's back up light history, covering the 1990-1994 and 1996-1997 model years.
The 3057 is a dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W primary filament and a 7W secondary filament. In automotive lighting, dual-filament bulbs serve two brightness levels within a single housing, though in a back up light application only the relevant filament circuit is engaged.
The 3156 is a single-filament wedge bulb, also in the T25 form factor, rated at 12V and 27W. It shares the same physical T25 wedge base as the 3057, which can create a risk of incorrect substitution.
Because the 3057 and 3156 share the T25 wedge base, one may physically seat in the socket intended for the other. However, the electrical configurations differ, and substituting one for the other without confirming circuit compatibility is not advised.
The 2456 is a festoon-style bulb rated at 12V, classified as a specialty application type. A festoon bulb is cylindrical in shape and mounts by contact pressure at each end rather than by a wedge or bayonet base, making it physically incompatible with the T25 sockets used by the 3057 and 3156.
The Chevrolet Lumina (1999-2001) specifies the 2456 festoon bulb, meaning the back up light assembly in those years uses a festoon socket rather than a wedge-type socket.
The 1995 model year also specifies the 2456 festoon bulb, while the immediately adjacent 1994 and 1996 model years specify wedge-type bulbs, indicating that the socket type is not consistent across all years and must be confirmed per model year before replacement.
The 1998 model year stands alone in specifying the 3156 single-filament wedge bulb, distinct from both the 3057 years surrounding it and the 2456 years that follow.
All three bulb types referenced in these specifications conform to ANSI standards recognized in both the United States and Canada.