The Pontiac G3 uses a 2357NA bulb size for the front side marker and a 1157 bulb size for the rear side marker. The replacement chart covers 2009 to 2010 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Pontiac G3 uses two distinct bulb types across its front and rear side marker positions for the 2009-2010 model years: the 2357NA at the front and the 1157 at the rear.
Both the 2357NA and 1157 are ANSI-standard bulbs recognized in the US and Canada, and both share the BAY15d bayonet base, a two-pin offset base design that locks the bulb into the socket at a fixed rotational position.
Despite sharing the same BAY15d base, the 2357NA and 1157 are not interchangeable, as their wattage ratings differ significantly.
The 2357NA operates at 26.9W on its high-filament and 8W on its low-filament, while the 1157 operates at 21W and 5W respectively, making the 2357NA the higher-output bulb of the two.
Both bulbs operate on a 12V electrical system, consistent with standard automotive voltage.
The dual-filament design of both bulbs allows a single unit to serve two lighting functions, typically combining steady running light output with a brighter flash for turn signal operation.
The 2357NA designation includes a natural amber glass envelope, which produces an amber color output directly from the bulb itself rather than relying on a colored lens to achieve the required marker light hue.
The 1157 does not carry an amber glass designation, indicating its glass envelope is clear and any amber coloring at the rear marker position is produced by the vehicle's lens assembly.