The Chevrolet Venture front turn signal bulb size includes 4157NA and 5702AK options, while rear turn signal bulbs measure 2356, 2456, or 3156 in size. The replacement chart covers vehicle production spanning 1997 to 2005 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 4157NA is the most frequently specified front turn signal bulb across the Chevrolet Venture's production run, appearing in seven of the nine model years listed (1997-2001 and 2004-2005).
The 4157NA is a dual-filament T25 wedge bulb rated at 12V with a 27W/7W filament split, and its natural amber glass produces the required turn signal color without relying on a tinted lens or coating.
The 5702AK, specified for the 2002-2003 Venture front turn signal, is a Sylvania-branded variant of the ANSI 3157 bulb with an amber coating applied to the glass rather than using naturally tinted material.
Although the 4157NA and 5702AK share the same T25 wedge base and 12V/27W/7W electrical ratings, they are distinct part numbers and their interchangeability depends on whether the housing is designed for a natural amber or coated amber source.
The rear turn signal uses three different bulb types across the model years, with the 2456 being the most common, specified for 1999-2004.
The 2456 is an ANSI-standard festoon bulb rated at 12V, a form factor associated with specialty mounting configurations that differs from the wedge and bayonet bases used elsewhere in the Venture's lighting system.
The 1997 Venture rear turn signal uses the 3156, a single-filament T25 wedge bulb rated at 12V and 27W, which contrasts with the dual-filament designs used in the front positions.
The 2005 Venture rear turn signal uses the 2356, a dual-filament bulb with a BAY15d bayonet base rated at 12V, making it physically incompatible with the 2456 festoon socket used in the 1999-2004 model years despite both being ANSI-standard parts.
The shift from the 2456 to the 2356 between the 2004 and 2005 rear turn signal positions represents a base type change, from festoon to BAY15d bayonet, meaning the two bulbs are not interchangeable even if voltage ratings align.
Across both front and rear positions, all specified bulbs operate on a 12V system, consistent with standard automotive electrical architecture in North American market vehicles of this era.