Chevrolet Silverado 1500 2004 Bulb Size
Bulb size chart
This page helps you verify the bulb sizes for the 2004 Chevrolet Silverado 1500 by lighting position, so you can match the correct replacement before you buy. Whether you are changing a headlight, a tail lamp, or a small interior bulb, checking the exact socket location is the easiest way to avoid ordering the wrong part.
For this Silverado 1500, the bulb chart covers exterior, interior, and utility lights used across different trim and body configurations. Use the listed positions to confirm the right fit for your truck, especially if you are replacing multiple bulbs at once or comparing original halogen bulbs with LED options.
Fitment can vary by trim, lighting package, market, and body style, so it is smart to confirm the bulb already installed in your truck before placing an order. Some positions may use standard halogen replacements, while others may be converted to LED aftermarket bulbs, which can change brightness, color, and sometimes compatibility. If your Silverado has been modified with non-OEM lamps or conversion kits, the bulb number in the chart may not match what is currently installed, so a quick visual check is always the safest step.
FAQ
What are the low beam bulb sizes for a 2004 Chevrolet Silverado 1500?
The low beam headlight bulb size listed for the 2004 Chevrolet Silverado 1500 is 9006.
What bulb does the high beam headlight use on this truck?
The high beam headlight bulb size is 9005.
What is the center high mount stop light bulb size?
The center high mount stop light bulb size is 921.
Which bulb fits the front turn signal and parking light positions?
Both the front turn signal light and the front parking light use 3157A.
What bulb size is used for the rear turn signal and tail light?
The rear turn signal light and tail light bulb size is 3157R.
What bulb is listed for the brake light?
The brake light bulb size is 3157R.
What size is the back up reverse light bulb?
The back up reverse light bulb size is 3157.
What is the daytime running light bulb size on the 2004 Silverado 1500?
The daytime running light bulb size is 4114.
What bulb fits the license plate light?
The license plate light bulb size is 194.
What bulb is used for the map light and glove box light?
The map light bulb size is 168, and the glove box light bulb size is 194.
What are the dome light bulb options shown for this truck?
The chart lists two dome light options: 578 and 211-2, depending on the original setup.
What should I do if my Silverado has fog lights or an aftermarket lighting setup?
The front fog light bulb is listed as 9145 LED, but aftermarket conversions and prior modifications can affect fitment. Check the installed bulb and connector before buying, especially if the truck has non-stock lighting.
Are the courtesy light bulbs the same on every 2004 Silverado 1500?
Not always. The chart shows two courtesy light options: 194 for one configuration and 2721 for another, so you should confirm the bulb position and original lamp style.
Can I use this page to replace interior and cargo area bulbs too?
Yes. The page includes interior and utility bulb positions such as the trunk or cargo area light, dome light, ash tray light, engine compartment light, and courtesy lights, which makes it useful for a full bulb replacement check.