1 Years Available
GMC Pb1000 Series Light Bulb Sizes
Complete bulb size reference for the GMC Pb1000 Series from 1966 to 1966. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Our database lists the same H5006 low beam bulb for GMC pb1000-series entries from 1966 to 1966. Confirm your trim and factory lighting package before buying.
Year Range
1966 – 1966
1 model yearsCommon Pb1000 Series Replacement Parts
Select Your Year
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Frequently Asked Questions
We have bulb size data for the GMC Pb1000-Series from 1966 to 1966, covering 1 model years. Select your year below for a complete position-by-position bulb chart.
No, the GMC Pb1000-Series has used the H5006 low beam bulb consistently. Any year in the 1966–1966 range uses the same bulb.
The GMC Pb1000-Series 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 Pb1000-Series 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.