For the 2015 GMC Canyon, the low-beam headlight uses an H11 bulb, while the high-beam headlight uses a 9005. The supplied fitment data does not list a projector or non-projector headlight distinction, so these applications are presented as the listed fitment for this model year.
Other notable exterior bulbs include 7444NA for the front turn signals and parking lights, plus 7443R for the brake and tail lights. The rear turn signal uses a 7443, while the rear side marker uses a 7443A.
For replacement lamps elsewhere on the truck, the reverse light and center stop light use 921 bulbs. License plate, front side marker, and map light applications may use either 2825 or 98. The trunk light is also a 921, and the vanity light uses 6612F. Check the bulb socket and existing lamp before ordering where multiple listed options are shown.