GMC C2500 Suburban Map Light Bulb Size

The GMC C2500 Suburban map light requires bulb sizes 168 and 211-2 depending on the specific application. Data for the provided components covers the range from 1992 to 1999.

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
1998-1999	168
1997	211-2
1996	168
1993-1995	211-2
1992	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2

Other Locations

Additional Notes

The GMC C2500 Suburban uses two distinct map light bulb types across its 1992-1999 model years: the 168 and the 211-2.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, conforming to ANSI standards applicable in both the US and Canada.
The 211-2 is a festoon bulb with an SV8.5 base and a 41mm length, rated at 12V and 12W, also conforming to ANSI standards for the US and Canada.
The 211-2 draws significantly more wattage than the 168, as its 12W rating is more than double the 4.9W rating of the wedge-style 168 bulb.
A festoon bulb, such as the 211-2, is held in place by spring-loaded end caps rather than a socket, which is a physically different mounting method from the wedge-style 168.
The 168 and 211-2 are not interchangeable due to their different base types, physical forms, and wattage ratings.
The GMC C2500 Suburban used the 168 bulb for the 1992, 1996, 1998, and 1999 model years.
The 211-2 bulb was specified for the 1993-1995 and 1997 model years.
The map light bulb specification changed between consecutive model years on multiple occasions, indicating that the same housing design was not retained throughout the full 1992-1999 production run.