Pontiac Vibe Back Up Light Bulb Size

The Pontiac Vibe back up light utilizes a 7440 bulb size for illumination purposes within the rear housing assembly. Data for the specific component covers the range from 2003 to 2008.

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
2003-2008	7440

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440

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Additional Notes

The Pontiac Vibe uses the 7440 bulb for the back up light across all model years covered in the specifications, spanning 2003-2008.
The 7440 is classified under the ANSI standard, which governs bulb specifications in the United States and Canada.
This bulb follows the T20 wedge form factor, a designation that refers to its physical base style and body shape rather than a proprietary fitment.
The 7440 operates on a 12-volt electrical system, consistent with standard automotive DC voltage.
The bulb carries a 21-watt power rating, which is typical for single-filament automotive signal and reverse light applications.
The single-filament design of the 7440 means it serves one lighting function only, distinguishing it from dual-filament variants such as the 7443, which shares the same T20 wedge base but is not interchangeable due to its additional filament and differing pin configuration.