Chevrolet Silverado 3500HD 2020 Bulb Size
Bulb size chart
This page helps you verify bulb sizes for the 2020 Chevrolet Silverado 3500HD by lighting position, so you can match the correct bulb to the exact lamp on the truck. Because the Silverado 3500HD can vary by trim, cab style, body style, and lighting package, checking the bulb location is the best way to avoid ordering the wrong part.
For this model year, the listed bulb fitments include common exterior and interior positions such as the low beam headlight, high beam headlight, fog light, front and rear turn signals, brake light, tail light, license plate light, reverse light, center high mount stop light, and vanity mirror light. Use the bulb chart on this page as a quick reference before replacing any burned-out bulb.
Fitment can differ between trims and markets, especially on trucks with different headlamp designs or factory LED equipment. If your Silverado 3500HD has halogen lamps, the bulb type may be different from an LED-equipped version, and aftermarket conversions can change what actually fits in the housing. Before buying replacements, check the bulb currently installed in the vehicle, compare the base style and connector, and confirm whether your truck uses a standard bulb or an LED assembly that may not be serviceable as a simple bulb swap.
FAQ
What bulb size does the 2020 Chevrolet Silverado 3500HD use for the low beam headlight?
The listed low beam headlight bulb size is H11 for the 2020 Chevrolet Silverado 3500HD.
What bulb size does the 2020 Chevrolet Silverado 3500HD use for the high beam headlight?
The listed high beam headlight bulb size is 9005.
What bulb size is used for the front fog light on this truck?
The front fog light bulb listed for the 2020 Chevrolet Silverado 3500HD is 5202 LED.
What bulb size is used for the front turn signal light?
The front turn signal light bulb size listed is 7443A.
What bulb size is used for the rear turn signal light?
The rear turn signal light bulb size listed is 7444NA.
What bulb size is used for the brake light and tail light?
Both the brake light bulb and the tail light bulb are listed as 7444 on this page.
What bulb size is used for the license plate light?
The license plate light bulb size listed is 2825.
What bulb size is used for the reverse light?
The back up reverse light bulb size listed is 921.
What bulb size is used for the center high mount stop light?
The center high mount stop light bulb size listed is 921.
What bulb size is used for the parking light?
The parking light bulb size listed is 7443.
What bulb size is used for the side marker lights?
The front side marker light bulb size listed is 7443A, and the rear side marker light bulb size listed is 7444NA.
Does the 2020 Silverado 3500HD use the same bulb in every trim?
Not always. Trim level, body style, market, and lighting package can change the exact bulb fitment, so it is important to verify the lamp position on your specific truck.
Should I check the bulb before ordering a replacement?
Yes. The safest approach is to inspect the installed bulb first, especially if the truck has been modified or if you are replacing a bulb in a housing that may have been changed to LED or aftermarket parts.
Can I replace a halogen bulb with an LED bulb on this truck?
Sometimes, but not every LED bulb is a direct fit. Even if the socket matches, beam pattern, polarity, and housing design can affect performance, so compatibility should be checked carefully before converting.
Why is the bulb chart useful for the 2020 Chevrolet Silverado 3500HD?
It lets you verify bulb sizes by lighting position, which helps you match the correct replacement to the exact lamp instead of guessing based on the vehicle alone.