Chevrolet Silverado 2500HD 2012 Bulb Size
Bulb size chart
This page helps you find the correct bulb sizes for the 2012 Chevrolet Silverado 2500HD by lighting position, so you can verify each exterior and interior lamp before ordering replacements. Because bulb fitment can vary by trim, cab style, and lighting package, it is best to match the bulb to the exact location on the truck rather than relying on a single universal size.
For the 2012 Chevrolet Silverado 2500HD, the listed bulb types cover headlights, turn signals, parking lights, side markers, brake lights, reverse lights, license plate lights, dome and map lights, vanity mirror lights, cargo lighting, and more. Use the chart on this page to quickly confirm the correct bulb for the specific light you are replacing and avoid buying the wrong part.
Fitment can differ between trims, body styles, and market-specific lighting packages, especially on trucks that have been modified or converted after purchase. Some positions may use standard halogen bulbs, while others may have LED replacements or LED-style upgrades already installed, so the bulb currently in the vehicle may not match the original factory listing. If your Silverado 2500HD has aftermarket headlights, fog lights, or daytime running light conversions, check the installed bulb and connector shape before buying. The safest approach is to remove the old bulb, read the number printed on the base, and compare it with the chart here before ordering.
FAQ
What are the headlight bulb sizes for the 2012 Chevrolet Silverado 2500HD?
The listed headlight bulbs are 9005 for high beam and H11 for low beam on the 2012 Chevrolet Silverado 2500HD.
What bulb does the front turn signal use on this truck?
The front turn signal light bulb is 4157NA on the 2012 Chevrolet Silverado 2500HD.
Are the parking light and front side marker bulbs the same size?
Yes. The parking light bulb and the front side marker light bulb are both listed as 4157NA.
What is the daytime running light bulb size?
The daytime running light bulb is listed as H11 LED for this model year.
What bulb fits the fog lights on a 2012 Silverado 2500HD?
The front fog light bulb is listed as 5202 LED, which is an LED-style fitment in the provided chart.
What size is the center high mount stop light bulb?
The center high mount stop light bulb uses a 921 bulb.
What bulb goes in the license plate light?
The license plate light bulb is 168.
What are the rear turn signal and reverse light bulb sizes?
Both the rear turn signal light and the back up reverse light are listed as 3047.
What bulb is used for the brake light and tail light?
The brake light bulb and tail light bulb are both listed as 3047R.
What bulb fits the dome light and map lights?
The dome light bulb and map light bulb are both listed as 212-2.
What bulb is used for the vanity mirror light?
The vanity mirror light bulb is listed as 6612F.
What is the cargo area light bulb size?
The trunk or cargo area light bulb is listed as 912.
Should I check the bulb before ordering replacements?
Yes. Even on the same 2012 Chevrolet Silverado 2500HD, trim and lighting package differences can affect fitment, so checking the installed bulb is a smart way to confirm the correct part.
Can aftermarket LED conversions change the bulb size I need?
They can change what is currently installed, but not necessarily the original factory bulb size. If the truck has aftermarket LED conversions, inspect the socket, connector, and installed bulb number before purchasing replacements.