2 Years Available
GMC 370 Light Bulb Sizes
Complete bulb size reference for the GMC 370 from 1958 to 1959. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Every GMC 370 from 1958 to 1959 uses the same H5006 low beam bulb — once you confirm your year is within this range, you only need one part number.
Year Range
1958 – 1959
2 model yearsCommon 370 Replacement Parts
Select Your Year
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Frequently Asked Questions
We have bulb size data for the GMC 370 from 1958 to 1959, covering 2 model years. Select your year below for a complete position-by-position bulb chart.
No, the GMC 370 has used the H5006 low beam bulb consistently across all 2 model years in our database. Any year in the 1958–1959 range uses the same bulb.
The GMC 370 uses a H5006 bulb for the low beam and a H5001 for the high beam. Select your year below for the exact fitment chart.
Yes. The GMC 370 uses a H5006 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.