Chevrolet Silverado 2500HD 2004 Bulb Size
Bulb size chart
This page helps you find the right bulb sizes for the 2004 Chevrolet Silverado 2500HD by lighting position, so you can replace a burned-out lamp with confidence. Whether you are checking the headlights, tail lights, marker lights, or interior bulbs, matching the correct socket and bulb type is the fastest way to get the truck back on the road.
The 2004 Silverado 2500HD uses a mix of exterior and interior bulb types, and some fitments can vary by trim, body style, or lighting package. Use this guide to verify the bulb size for each location before ordering, especially if your truck has been modified or if you are replacing more than one bulb at the same time.
For best fitment, compare the bulb in your truck with the listing for the exact lighting position before buying. Trim and package differences can change the application, and some owners may have halogen bulbs in one area while using LED upgrades in another. Aftermarket conversions can also affect beam pattern, brightness, and connector compatibility, so it is smart to check the installed bulb and the housing design before purchase. If you are switching to LED, make sure the replacement is appropriate for the socket and that it will work correctly with your truck’s lighting circuit and lens style.
FAQ
What low beam bulb does a 2004 Chevrolet Silverado 2500HD use?
The low beam headlight bulb listed for the 2004 Chevrolet Silverado 2500HD is 9006.
What high beam bulb fits the 2004 Silverado 2500HD?
The high beam headlight bulb for this truck is 9005.
What bulb is used for the daytime running lights?
The daytime running light bulb listed for the 2004 Silverado 2500HD is 4114.
What bulb fits the front fog lights?
The front fog light bulb listed on this page is 9145 LED.
What bulb size is used for the front turn signals and parking lights?
Both the front turn signal bulb and the parking light bulb are listed as 3157A.
What bulb is used for the rear turn signals, brake lights, and tail lights?
The rear turn signal bulb, brake light bulb, and tail light bulb are all listed as 3157R.
What bulb fits the back-up reverse lights?
The back-up reverse light bulb listed for this model is 3157.
What bulb is used for the license plate lights?
The license plate light bulb listed for the 2004 Chevrolet Silverado 2500HD is 194.
What bulb fits the center high mount stop light?
The center high mount stop light bulb is listed as 921.
What bulb is used for the roof marker lights?
The roof marker light bulb listed on this page is 194.
What bulb fits the front and rear side marker lights?
The front side marker light bulb and rear side marker light bulb are both listed as 194NA.
What interior bulbs are listed for the cab and storage areas?
This page lists several interior bulbs, including map light bulb 168, glove box light bulb 194, trunk or cargo area light bulb 912, ash tray light bulb 161, and dome light options 578 or 211-2 depending on the original setup.
Why does the bulb size page mention different options for some interior lights?
Some interior locations can have more than one original bulb option depending on trim, cab configuration, or lighting package. That is why the page includes compare-to-original choices for certain courtesy and dome light positions.
Can trim or body style change the bulb I need?
Yes. Trim level, body style, and market-specific lighting packages can affect fitment, so it is important to verify the bulb by the exact lighting position on your truck.
Should I check the old bulb before ordering a replacement?
Yes. Checking the installed bulb is one of the best ways to confirm fitment, especially if the truck has been modified or if you are replacing a bulb that may not match the original specification.