Saturn Vue Back Up Light Bulb Size

The Saturn Vue back up light utilizes unique bulb sizes 2458, 3157, 3156, 2356, and 2456 depending on the specific version of the vehicle. Data for the provided bulb sizes covers the range from 2002 through 2010.

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
2008-2010	3157
2007	3156
2005-2006	2356
2004	2456
2003	2356
2002	2456

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157
ANSI standard (US & Canada). Single-filament wedge bulb (T25). 12V, 27W.	3156
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V.	2356
ANSI standard (US & Canada). Festoon bulb, specialty application. 12V.	2456

Other Locations

Additional Notes

The Saturn Vue backup light specifications cover model years 2002-2010 and reference four distinct ANSI-standard bulb types across that span.
The 3157 is a dual-filament T25 wedge bulb rated at 12V with a 27W main filament and a 7W secondary filament. It is specified for the Saturn Vue across the 2008-2010 model years.
The 3156 is a single-filament T25 wedge bulb rated at 12V and 27W. It shares the same T25 wedge form factor as the 3157 but carries only one filament, making the two bulbs physically similar yet functionally distinct.
Although the 3156 and 3157 share a T25 wedge base, substituting one for the other is not supported by these specifications, as the 3157 is listed for 2008-2010 and the 3156 only for 2007.
The 2356 is a dual-filament bulb with a BAY15d bayonet base rated at 12V. The BAY15d base uses two offset pins to prevent incorrect insertion, a design that physically distinguishes it from the T25 wedge types.
The 2356 is specified for the Saturn Vue in 2003, 2005, 2006, and 2009 is not among its years; it applies to 2003, 2005-2006, and also 2003 alone, so to state it precisely: the 2356 is listed for model years 2003, 2005, and 2006.
The 2456 is a festoon-style bulb rated at 12V, noted for specialty application use. Festoon bulbs are held in place by contact pressure at each end rather than by a base socket, which sets them apart from both wedge and bayonet types.
The 2456 is specified for the Saturn Vue in model years 2002 and 2004, making it the least frequently appearing bulb type across the listed years.
All four bulb types in these specifications conform to ANSI standards recognized in both the United States and Canada, indicating consistent regulatory compliance across the range.
The backup light position on the Saturn Vue saw three different bulb base types across its production run, specifically the T25 wedge, the BAY15d bayonet, and the festoon, meaning these bulb types are not interchangeable with one another regardless of voltage or wattage similarity.