1 Years Available
GMC Syclone Light Bulb Sizes
Complete bulb size reference for the GMC Syclone from 1991 to 1991. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Every GMC syclone from 1991 to 1991 uses the same H6054 low beam bulb — once you confirm your year is within this range, you only need one part number.
Year Range
1991 – 1991
1 model yearsCommon Syclone Replacement Parts
Select Your Year
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Frequently Asked Questions
We have bulb size data for the GMC Syclone from 1991 to 1991, covering 1 model years. Select your year below for a complete position-by-position bulb chart.
No, the GMC Syclone has used the H6054 low beam bulb consistently. Any year in the 1991–1991 range uses the same bulb.
The GMC Syclone uses a H6054 bulb for the low beam. Select your year below for the exact fitment chart.
Yes. The GMC Syclone uses a H6054 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.