GMC Sierra EV headlight bulb size by year
The low beam, high beam and fog light bulbs for every GMC Sierra EV from 2025–2026. Pick your year to jump straight to it. Each answer links to the page in GMC’s owner’s manual it came from.
GMC Sierra EV bulb sizes at a glance
| Years | Low beam | High beam |
|---|---|---|
| 2025–2026 | LED | LED |
Where a year lists more than one bulb, it depends on trim or headlight type; see that year’s section below.
2025–2026 GMC Sierra EV headlight bulbs
| Light | Bulb | Notes |
|---|---|---|
| Low beam | LED | LED unit |
| Low beam | LED | manual: headlamps are LED (no replaceable bulb) |
| High beam | LED | LED unit |
| High beam | LED | manual: headlamps are LED (no replaceable bulb) |
LED headlights are usually serviced as a complete lamp assembly rather than a separate bulb; a dealer or parts counter can quote the assembly for your trim.
Where this comes from (2 sources)
Always double-check the size printed on the old bulb’s base before you buy. See how we source our data. More GMC models.