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2 Years Available

GMC 100 Light Bulb Sizes

Complete bulb size reference for the GMC 100 from 1958 to 1959. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.

The GMC 100 changed low beam specifications across model years — 1959: H6024; 1958: H5006. Make sure to select your exact year below to get the right bulb size.

Year Range

1958 – 1959

2 model years

Most Common Low Beam

H6024

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Bulb Sizes Across Years

PositionBulb Type(s)YearsStatus
Low Beam
H6024(1959–1959)
H5006(1958–1958)
2 yearsChanged
High Beam
H5001(1958–1959)
2 yearsConsistent

Common 100 Replacement Parts

Low Beam

H6024

High Beam

H5001

Select Your Year

1959

H6024

1958

H5006
10001000 Series15015001500 Series25025002500 Series

Frequently Asked Questions

We have bulb size data for the GMC 100 from 1958 to 1959, covering 2 model years. Select your year below for a complete position-by-position bulb chart.

Yes, the GMC 100 changed low beam bulb specifications across generations: 1959–1959: H6024; 1958–1958: H5006. Make sure to check your exact year using the list below.

The GMC 100 uses a H6024 bulb for the low beam and a H5001 for the high beam. Select your year below for the exact fitment chart.

Yes. The GMC 100 uses a H6024 low beam, and direct-fit LED conversion kits for that size are widely available. LED upgrades typically produce 2–3× more light output than stock halogen and last 25,000+ hours. Look for a DOT-compliant kit with a proper beam cutoff pattern.

Select your model year from the list below. Each year page shows every bulb position — low beam, high beam, fog light, turn signal, and brake light — with the correct size and a link to buy it on Amazon.