20 Years Available
GMC K2500 Light Bulb Sizes
Complete bulb size reference for the GMC K2500 from 1979 to 2000. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
The GMC k2500 changed low beam specifications across model years — 1993–2000: H6054 LED; 1980–1996: H6054; 1984–1986: H4656; 1989–1990: H4703; 1991: 9006; 1979: H6024. Make sure to select your exact year below to get the right bulb size.
Year Range
1979 – 2000
20 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Low Beam | H6054 LED(1993–2000) H6054(1980–1996) H4656(1984–1986) H4703(1989–1990) 9006(1991–1991) H6024(1979–1979) | 20 years | Changed |
| High Beam | 9005(1989–1996) H4651(1982–1986) 74(1993–1997) H6054 LED(1998–2000) 168(1980–1981) | 19 years | Changed |
| Fog Light | H3 LED(1993–2000) | 7 years | Consistent |
| Brake Light | 74(1993–1997) 3157CK(1990–1996) 1157(1979–1982) 921 LED(1999–2000) 912 LED(1998–1998) | 15 years | Changed |
| Side Marker | 168(1979–1986) 194 LED(1993–2000) 194(1989–1996) | 20 years | Changed |
| Turn Signal Front | 2357NA LED(1993–2000) 1157A(1979–1982) 3157CK(1992–1992) 1157(1981–1981) | 12 years | Changed |
| Turn Signal Rear | 3057 LED or 1157 LED(1993–1997) 3157CK(1990–1996) 1157(1979–1982) 3057 LED(1998–2000) | 15 years | Changed |
| Reverse Light | 1156(1979–1997) 3156(1990–2000) | 20 years | Changed |
| License Plate | 194(1989–2000) | 12 years | Consistent |
| Map Light | 168 or 211-2(1993–2000) 168 or 561(1998–1998) 168(1996–1996) | 8 years | Changed |
| Parking Light | 2357NA(1993–2000) 1157A(1979–1982) 3157CK(1992–1992) 1157(1981–1981) | 12 years | Changed |
| Trunk Light | 921 or 570(1993–1997) 912(1999–2000) 921(1998–1998) | 7 years | Changed |
| Tail Light | 3157CK(1990–1999) 1157(1979–1993) 3057(1998–2000) | 15 years | Changed |
| Daytime Running | 3157CK(1999–1999) | 1 years | Consistent |
| Dome Light | 211-2(1993–1998) | 5 years | Consistent |
Common K2500 Replacement Parts
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Frequently Asked Questions
We have bulb size data for the GMC K2500 from 1979 to 2000, covering 20 model years. Select your year below for a complete position-by-position bulb chart.
Yes, the GMC K2500 changed low beam bulb specifications across generations: 1993–2000: H6054 LED; 1980–1996: H6054; 1984–1986: H4656; 1989–1990: H4703; 1991–1991: 9006; 1979–1979: H6024. Make sure to check your exact year using the list below.
The GMC K2500 uses a H6054 LED bulb for the low beam and a 9005 for the high beam, and a H3 LED for the fog lights. Select your year below for the exact fitment chart.
Yes. The GMC K2500 uses a H6054 LED 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.