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2001 GMC Sierra C3 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.

2001 GMC Sierra C3 Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Daytime Running3157CK—Standard listingHalogenMedium
Pending

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

Amazon
Turn Signal Front3157NA—Standard listingHalogenHigh
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
Side Marker194—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
Parking Light3157NA—Standard listingHalogenMedium
Pending

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

Amazon
Brake Light921—Standard listingHalogenHigh
Pending

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

Amazon
Reverse Light3157—Standard listingHalogenMedium
Pending

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

Amazon
License Plate194—Standard listingHalogenMedium
Pending

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

Amazon
Map Light168—Standard listingHalogenMedium
Pending

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

Amazon

2001 GMC Sierra C3 Fitment Notes

We currently have bulb data for the 2001 GMC Sierra C3. Check back as we expand our database with additional model years and trim-level variations.

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 2001 GMC Sierra C3's bulbs compare to other years?

This bulb configuration covers the 2001 model years.

Finding the best installation guide...

Other Sierra C3 Years

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Other Vehicles That Use 9006 / HB4 Bulbs

2020 Dodge Journey2018 Chevrolet Express 25002017 Mitsubishi Lancer2016 Chevrolet Express 1500-35002015 Chevrolet Express 45002015 Honda Civic

9006 / HB4 Comparisons

9005 vs 90069006 vs H11

Frequently Asked Questions

Our database lists 9006 for the 2001 GMC Sierra C3 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 2001 GMC Sierra C3 high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2001 GMC Sierra C3 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 2001 GMC Sierra C3 fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2001 GMC Sierra C3 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 2001 GMC Sierra C3: 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 2001 GMC Sierra C3.