1972 GMC All Light Trucks 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.
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1972 GMC All Light Trucks Bulb Size Chart
| Position | Bulb Code | Aliases | Trim / Package | Factory Type | Confidence | Review | Notes | Shop |
|---|---|---|---|---|---|---|---|---|
| High Beam | H5001 | — | Standard listing | Halogen | High | Pending | Verify trim, factory lighting package, and the bulb number on the existing bulb. | |
| Low Beam | H5006 | — | Standard listing | Halogen | High | Pending | Verify trim, factory lighting package, and the bulb number on the existing bulb. |
1972 GMC All Light Trucks Fitment Notes
Our database shows the same listed bulb sizes for the GMC All Light Trucks across the 1958 to 1972 range. Still verify your trim, lighting package, and the bulb number in the housing 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
How do the 1972 GMC All Light Trucks's bulbs compare to other years?
The 1972 GMC All Light Trucks uses the same bulbs as the 1971 model.
This bulb configuration covers the 1966–1972 model years. ← 1971
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Frequently Asked Questions
Our database lists H5006 for the 1972 GMC All Light Trucks low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.
Our database lists H5001 for the 1972 GMC All Light Trucks high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.
Dim headlights on a 1972 GMC All Light Trucks can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed H5006 size against the bulb in the housing before choosing a replacement or upgrade.
The 1972 GMC All Light Trucks does not have a fog light bulb listed in our current database. If your vehicle has fog lights, verify the bulb in the housing or owner's manual before buying.
The 1972 GMC All Light Trucks uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.
LED upgrades are available for many H5006 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as H5006, and verify the factory housing before buying.
No — the 1972 GMC All Light Trucks uses the same bulb sizes as the 1971 model. This configuration has been consistent across the 1966–1972 generation.
The 1972 GMC All Light Trucks is the last year in the 1966–1972 generation to use the H5006 bulb for the low beam headlight.
Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed H5006 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 H5006 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 1972 GMC All Light Trucks.