GMC Envoy License Plate Bulb Size

The GMC Envoy license plate light utilizes 12961 and 168 bulb sizes for the exterior illumination system. Available information covers the production span starting in 2002 and ending in 2009.

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
2004-2009	12961
2002-2003	168

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The GMC Envoy uses two distinct bulb sizes for the license plate position across its model years, specifically the 12961 and the 168.
Both the 12961 and the 168 share the same T10 miniature wedge form factor and operate on a 12-volt electrical system, which reflects their physical and electrical compatibility within that bulb family.
The 12961 is a Philips part number designation, while the 168 is an ANSI standard designation recognized across the United States and Canada.
The 12961 carries a W2.1x9.5d base specification, which is the standard base type associated with T10 wedge bulbs in this category.
The 12961 is rated at 5W, whereas the 168 is rated at 4.9W, placing both within the same low-wattage range typical of license plate illumination applications.
The GMC Envoy (2004-2009) uses the 12961 bulb for the license plate position across six consecutive model years.
The 2002-2003 model years use the 168 bulb instead, representing a different fitment from the later production years.
Despite the shared T10 form factor between the 12961 and the 168, the base designations differ, and substitution between the two warrants attention to base compatibility before installation.