The typical headlight bulb size for the 2009 Chevy Colorado is 9007, a dual-filament bulb used for both low and high beams in many factory headlight housings. However, some trims or aftermarket assemblies may use different bases. Confirm by inspecting the existing bulb or checking the owner's manual.
This article explains the common sizes you might encounter on a 2009 Colorado and how to verify the exact fit for your specific headlight housing. If in doubt, rely on the specific part number printed on the old bulb or the vehicle’s manual to ensure a correct match.
Common headlight bulb sizes for the 2009 Colorado
The following sizes cover the most frequently encountered configurations in this model year. The correct base depends on your headlight assembly, and variations can occur with aftermarket upgrades.
- 9007 (dual-filament HB5) — the most common size for the 2009 Colorado’s low/high beams in many factory headlight housings.
- H4 (also known as 9003) — used on some older or aftermarket headlight assemblies that retain a three-prong base.
- H13 — used by some projector-style or aftermarket headlights that combine high/low in a single bulb with a distinct base. Verify compatibility before purchasing.
Before purchasing, verify the exact bulb by inspecting the current bulb, consulting the owner's manual, or checking the headlight housing model number. Some aftermarket replacements may claim compatibility but require adapters or a different base.
How to verify and replace a headlight bulb
Use these steps to confirm the bulb size and replace it safely if needed.
- Open the hood and locate the headlight assembly. Remove the dust cover if present.
- Carefully disconnect the wiring harness from the bulb connector.
- Remove the bulb by rotating or releasing the retaining clip or spring, depending on the housing.
- Inspect the base for the base number or count the prongs to match the correct size (9007, H4/9003, or H13).
- Install the replacement bulb, reconnect the wiring, and test the light before closing the hood.
Note: When replacing, avoid touching the glass of the bulb with bare fingers; oils from skin can shorten bulb life. Use a clean cloth or gloves.
Summary
For most 2009 Chevy Colorado models, the standard headlight bulb size is 9007 dual-filament for low and high beams. Some headlight assemblies or aftermarket options may use H4/9003 or H13 bases. Always verify the exact base by inspecting the current bulb or consulting the owner's manual, and replace bulbs with care to ensure proper fit and safety.
Sources: 2009 Chevy Colorado owner’s manual and common headlight replacement references for GM trucks.