Pontiac Montana Dome Light Bulb Size

The Pontiac Montana dome light utilizes bulb size 562 or 212-2 depending on the specific version of the vehicle. Data for the lighting components covers the range from 1999 to 2006.

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
2002-2006	562
2001	212-2
2000	562
1999	212-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

The Pontiac Montana uses two festoon bulb types for the dome light across its 1999-2006 model years: the 562 and the 212-2.
The 562 bulb is specified for the 2000 and 2002-2006 Montana, while the 212-2 is specified for the 1999 and 2001 model years.
Both bulb types share the same voltage and wattage ratings of 12V and 12W, meaning their electrical draw is identical.
Despite matching electrical ratings, the 562 and 212-2 are not physically interchangeable, as they differ in length and base type.
The 562 has a 44mm length with end-cap contacts, while the 212-2 has a 41mm length with an SV8.5 base, making the 562 the longer of the two.
The SV8.5 base on the 212-2 refers to a festoon-style base with a specific socket fitting, which differs from the flat end-cap contact design of the 562.
Both bulbs conform to ANSI standards applicable in the United States and Canada.
The festoon form factor on both types means the bulb is cylindrical and mounts by pressing its end contacts or base into spring-loaded holders within the dome light housing.