For the 2005 Chevrolet Colorado, the low-beam fitment is H6054. High-beam fitment is listed as either 9005 or H6054, so confirm the bulb and headlamp assembly currently installed before ordering. The high-beam choice may vary by the truck’s headlight configuration.
Fog-light fitment requires comparison with the original bulb: use 9045 for Option 1, or compare the housing for an H11 LED or H16 LED setup under Option 2. Other notable exterior bulbs include 3757A for the front turn signal and parking light, 3057 for reverse and rear turn signals, and 3057R for brake and tail lights. The center stop light and trunk light use 912, while daytime running lights use 4157NA. License-plate lighting is listed as 2825 or 98; compare the original bulb if needed.