
SEALIGHT H10/9145/9140 LED Fog Light Bulbs, 6000K Xenon W...
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Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam
Used for: Headlight Bulb Low Beam
Used for: Back Up Reverse Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb
Used for: Center High Mount Stop Light Bulb
Used for: Daytime Running Light Bulb
Used for: License Plate Light Bulb, Roof Marker Light Bulb, Courtesy Light Bulb(Compare to original - Option 1), Glove Box Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front, Side Marker Light Bulb Rear
Used for: Turn Signal Light Bulb Rear
Used for: Courtesy Light Bulb(Compare to original - Option 2)
Used for: Dome Light Bulb(Compare to original - Option 1), Map Light Bulb
Used for: Dome Light Bulb(Compare to original - Option 2)
Used for: Trunk or Cargo Area Light
This page helps you verify the bulb sizes for the 2006 GMC Sierra 2500HD by lighting position, so you can match the correct replacement before you buy. Whether you are changing a headlight, tail light, marker lamp, or interior bulb, checking the exact socket location is the easiest way to avoid ordering the wrong part.
For the 2006 GMC Sierra 2500HD, the listed bulb chart covers both exterior and interior lighting points, including high beam, low beam, parking, turn signal, brake, reverse, fog, roof marker, license plate, dome, map, glove box, and cargo lights. Because trim and lighting equipment can vary, using the bulb position on this page is the best starting point for fitment.
Keep in mind that trim level, cab style, bed length, and lighting package can change the bulb used on some positions, especially on courtesy, dome, and marker lights. If you are switching from halogen to LED, make sure the replacement is designed for the same socket and that it will work with your truck’s electrical setup; some aftermarket LED conversions may need resistors or a compatible flasher to avoid fast blinking or warning issues. Before ordering, it is smart to remove the installed bulb and compare the number printed on the base, since previous owners may have installed non-original parts. For the 2006 Sierra 2500HD, the chart includes common sizes such as 9005 high beam, 9006 low beam, 921 center high mount stop light, 194 license plate and several interior lamps, 3157R tail and brake lamps, 3157A rear turn signals, 4157NA front turn and parking lamps, 4114 daytime running lights, and 9145 LED fog lights.
The chart lists 9005 for the high beam and 9006 for the low beam on the 2006 GMC Sierra 2500HD.
The center high mount stop light bulb is listed as 921.
The license plate light bulb is listed as 194.
Both the front turn signal and front parking light are listed as 4157NA.
The rear turn signal bulb is listed as 3157A.
Both the brake light and tail light are listed as 3157R.
The back up reverse light bulb is listed as 3157.
The daytime running light bulb is listed as 4114.
The front fog light bulb is listed as 9145 LED.
The map light is listed as 578, and the dome light has two listed options: 578 for one configuration and 211-2 for another.
The glove box light bulb is listed as 194.
The trunk or cargo area light is listed as 912.
Some interior positions can vary by cab style, trim, or lighting package, so the page may list more than one bulb option for the same location.
Yes. Checking the bulb already installed is a good way to confirm the exact fit, especially if the truck has been modified or if a previous owner used a non-original bulb.
Yes, in many positions you can, but the LED must match the socket and fitment. Some aftermarket LED bulbs may need extra components or may not be compatible with every housing.