GMC Terrain Back Up Light Bulb Size

The GMC Terrain back up light utilizes a 921 bulb size for the specific lighting component located at the rear of the vehicle. Available data covers the period from 2010 through 2020 for the specified automotive application.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Back Up Light

YearsBulb Size
2010-2020921

Inner Back Up Light

YearsBulb Size
2017-2020921

Bulb Specifications

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

Other Locations

Additional Notes