3 Years Available
GMC Sierra 2500-3500 Light Bulb Sizes
Complete bulb size reference for the GMC Sierra 2500-3500 from 1999 to 2016. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
The GMC sierra-2500-3500 changed low beam specifications across model years — 2014: H11; 1999: 9006. Make sure to select your exact year below to get the right bulb size.
Year Range
1999 – 2016
3 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status / Shop |
|---|---|---|---|
| Fog Light | H11(2014–2016) | 2 years | Consistent |
| Turn Signal Front | 7443(2016–2016) | 1 years | Consistent |
| Parking Light | 7443(2016–2016) | 1 years | Consistent |
| Side Marker | 194(1999–2016) | 3 years | Consistent |
| License Plate | W5W(2016–2016) 168(2014–2014) 194(1999–1999) | 3 years | Changed |
| Reverse Light | 921(2016–2016) 3047(2014–2014) 3156(1999–1999) | 3 years | Changed |
| Brake Light | 921(1999–2016) | 3 years | Consistent |
| High Beam | 9005(1999–2014) | 2 years | Consistent |
| Daytime Running | H11(2014–2014) | 1 years | Consistent |
| Low Beam | H11(2014–2014) 9006(1999–1999) | 2 years | Changed |
| Tail Light | 3047(2014–2014) 3057(1999–1999) | 2 years | Changed |
| Turn Signal Rear | 3047(2014–2014) 3057(1999–1999) | 2 years | Changed |
| Map Light | 168(1999–1999) | 1 years | Consistent |
Common Sierra 2500-3500 Replacement Parts
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Frequently Asked Questions
We have bulb size data for the GMC Sierra-2500-3500 from 1999 to 2016, covering 3 model years. Select your year below for a complete position-by-position bulb chart.
Yes, the GMC Sierra-2500-3500 changed low beam bulb specifications across generations: 2014–2014: H11; 1999–1999: 9006. Make sure to check your exact year using the list below.
The GMC Sierra-2500-3500 uses a H11 bulb for the low beam and a 9005 for the high beam, and a H11 for the fog lights. Select your year below for the exact fitment chart.
Yes. The GMC Sierra-2500-3500 uses a H11 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.