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2002 Chevrolet Trailblazer EXT Bulb Size Chart

Bulb sizes may vary by trim, factory lighting package, region, production date, and previous modifications. Verify the bulb number on your existing bulb before buying.

Last database update: May 2026. Manual review status: Not yet manually reviewed.

Verify before buying: check the bulb number printed on your existing bulb, confirm your trim and factory lighting package, and review the seller's fitment notes.
Disclosure: We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.

2002 Chevrolet Trailblazer EXT Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Turn Signal Front3157CK—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Side Marker194—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Fog Light880899If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
Low Beam9006HB4Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
High Beam9005HB3Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
License PlateW5W—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Reverse Light3157CK—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Brake Light3157CK—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Parking Light3157CK—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Turn Signal Rear3157CK—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Tail Light3157CK—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Map Light194—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon

2002 Chevrolet Trailblazer EXT Fitment Notes

Across the 2002-2006 production range, our database shows changes in the listed Turn Signal Front, Turn Signal Rear, Parking Light positions. Use the chart above for this 2002 model, then confirm the bulb number in your vehicle before buying.

Known fitment limitations

  • factory HID or LED packages may use different parts
  • fog lights may depend on equipment package
  • aftermarket headlight assemblies may use different bulbs
  • regional models and production-date splits may differ

See an incorrect bulb size? Submit a correction.

How do the 2002 Chevrolet Trailblazer EXT's bulbs compare to other years?

The 2003 model switched to a different bulb configuration.

This bulb configuration covers the 2002 model years. 2003 →

Finding the best installation guide...

Other Trailblazer EXT Years

2006200520042003

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9006 / HB4 Comparisons

9005 vs 90069006 vs H11

Frequently Asked Questions

Our database lists 9006 for the 2002 Chevrolet Trailblazer EXT low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists 9005 for the 2002 Chevrolet Trailblazer EXT high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2002 Chevrolet Trailblazer EXT can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed 9006 size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists 880 for the 2002 Chevrolet Trailblazer EXT fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2002 Chevrolet Trailblazer EXT uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

LED upgrades are available for many 9006 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as 9006 / HB4, and verify the factory housing before buying.

Our database has a fog light entry for the 2002 Chevrolet Trailblazer EXT: 880. Fog lights may still depend on trim or equipment package.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed 9006 low beam size on the existing bulb or owner's manual, then follow the service procedure for your exact trim.

Rules for LED headlight retrofits vary by location and by housing type. Avoid products that create glare or lack road-use compliance claims, and check local requirements before using an LED conversion on public roads.

Replacement cost depends on bulb technology, brand, and labor access. Common halogen 9006 replacements are usually cheaper than LED conversion kits. Check seller fitment notes before comparing prices.

Halogen bulbs and LED replacements differ in output, heat behavior, beam pattern, and electronics. A correct bulb code does not guarantee a correct LED beam pattern, so verify physical fit and seller compatibility notes for the 2002 Chevrolet Trailblazer EXT.