What tail light bulb for a 2018 Chevy Colorado?

For most 2018 Colorado models with traditional incandescent rear lights, the main tail/stop/turn bulb is a 3157 dual-filament unit. Some trims or regional builds with LED tail lights use non-replaceable modules rather than a standard bulb.

Bulbs used in incandescent rear lighting (typical)

These are the bulbs you would commonly encounter in a Colorado that has conventional incandescent taillights.

• Tail/Brake/Turn signal: 3157 (dual-filament). This bulb carries separate circuits for the tail light and for the brake/turn functions.


• Backup light: 194 wedge bulb (or the equivalent specified for your exact assembly). The backup light is a separate bulb from the tail/stop/turn bulb.

Note: Variations can occur by trim level or production region. If in doubt, remove the existing bulb to compare, or bring the bulb/socket to an auto parts store to confirm a match.

LED taillight option

If your 2018 Colorado came with LED rear lights, there are no replaceable bulbs in the taillight housing. In that case, you would replace the entire tail light module rather than a single bulb.

How to verify which setup you have: inspect the tail lamp housing for bulbs or LEDs, check the owner’s manual, or consult a GM parts catalog for your VIN/trim. If you’re unsure, a dealership or qualified technician can confirm the correct part.

How to source replacements

When ordering bulbs, consider these guidance points to avoid mistakes:

• Confirm the bulb type by reading the bulb currently installed or checking the vehicle manual.


• Ask for a 3157 dual-filament bulb for the tail/stop/turn function if your vehicle uses incandescent rear lighting.


• If your truck uses LED taillights, prepare to replace the entire taillight assembly rather than a single bulb.

Always verify compatibility with your exact trim and production date to ensure the correct part is purchased.

Summary

The typical incandescent tail light on a 2018 Chevy Colorado uses a 3157 dual-filament bulb for the tail/stop/turn functions, with a separate backup light bulb (commonly a 194 wedge). Some trims may feature LED taillights, which do not use replaceable bulbs and require the entire module replacement. To be sure, check the existing bulb, consult the owners manual, or ask a dealer/parts specialist for your specific VIN and trim.

How to change tail light bulb in 2018 Chevy Colorado?

Out wear gloves to replace the new one so you don't get fingerprint oils on it line up the two dowels. Just press it in replace the two T15s. Check make sure the light works.

Is the tail light bulb the same as the brake light bulb?

Brake lights and tail lights may appear similar and often use the same bulb, but they serve distinct purposes.

What tail light bulb does a 2018 Chevy Silverado take?

Replacement Light Bulbs

Are 3157 and 4057 bulbs the same?

A: Kenny, yes, these standard 3157 brilliant red LED bulbs will fit 4057K. The 3157 bulbs will replace many size bulbs such as 3156, 3057, 3056, 4157, 3157K etc. And there isn't somethig different between 4057 and 4057k, just the named method is different.