Chevrolet Prizm Back Up Light Bulb Size

The Chevrolet Prizm back up light requires a 921 bulb size for proper installation and function within the rear lighting assembly. Data for the specific component covers the range from 1998 through 2002.

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
1998-2002	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

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Additional Notes

The Chevrolet Prizm uses the 921 bulb for its back up light across all listed model years, spanning 1998-2002.
The 921 is an ANSI-standardized bulb, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 921 bulb uses a wedge-style base, designated T15, which refers to a tubular lamp body approximately 15/8 of an inch wide. Wedge bases have no metal pins and are held in place by the socket gripping the glass envelope directly.
The 921 operates at 12 volts, which is consistent with standard automotive electrical systems.
The 921 has a rated wattage of 16W, placing it in a moderate output range typical of reverse lighting applications.
Because the 921 bulb is uniform across the entire 1998-2002 production run of the Chevrolet Prizm, a single bulb specification covers all listed model years without variation.