Chevrolet Tahoe 2021 Bulb Size
Bulb size chart
The 2021 Chevrolet Tahoe uses different bulb types depending on the lighting position, trim, and headlight package, so it helps to verify each socket before buying replacements. This page is organized by location to make it easier to match the correct bulb size for your Tahoe’s exterior and interior lights.
Whether you are replacing a headlight, brake light, reverse light, or cabin bulb, the 2021 Chevrolet Tahoe bulb chart on this page lets you confirm the fit by lighting position. That is especially useful on a full-size SUV like the Tahoe, where halogen and HID setups can use different bulbs in the same model year.
Fitment can vary by market, body style, and equipment package, so always compare the bulb listed here with the one already installed in your vehicle. The 2021 Tahoe may use different bulbs for halogen versus HID headlight setups, and some exterior lights can also change with factory LED or optional lighting packages. If you are considering an aftermarket LED conversion, make sure the bulb base, connector, and housing depth are compatible, since not every LED replacement will fit or function correctly in every socket. The safest approach is to check the installed bulb before ordering, especially for lights like the low beam, DRL, fog light, and turn signal positions.
FAQ
What bulb size does the 2021 Chevrolet Tahoe use for the low beam headlight?
The low beam bulb depends on the headlight package. 2021 Chevrolet Tahoe models with HID headlights use D3S low beam bulbs, while models with halogen headlights use H11 low beam bulbs.
What bulb size does the 2021 Chevrolet Tahoe use for the high beam headlight?
The high beam headlight bulb for the 2021 Chevrolet Tahoe is 9005.
Does the daytime running light bulb change on the 2021 Tahoe?
Yes. The daytime running light bulb depends on the headlight setup. Tahoe models with HID headlights use an LED DRL setup, while models with halogen headlights use a 9005 bulb for the daytime running light position.
What is the rear turn signal bulb size on a 2021 Chevrolet Tahoe?
The rear turn signal bulb size is 7440 for the 2021 Chevrolet Tahoe.
What bulb does the front turn signal use on this Tahoe?
The front turn signal light bulb is 7440A on the 2021 Chevrolet Tahoe.
What bulb size is used for the reverse lights?
The back up reverse light bulb on the 2021 Chevrolet Tahoe is 921.
What bulb size is used for the brake lights?
The brake light bulb is 7440R on the 2021 Chevrolet Tahoe.
What bulb size is used for the fog lights?
The front fog light bulb can be PSX26W or 12278, depending on the vehicle’s equipment.
What bulb size is used for the license plate lights?
The license plate light bulb can be 2825 or 98 on the 2021 Chevrolet Tahoe.
Are the interior bulbs on the 2021 Tahoe listed as LED?
Yes. The chart on this page lists several interior positions as LED, including the dome light, map light, interior door light, trunk or cargo area light, and center high mount stop light.
Can I use an LED replacement bulb in place of the factory bulb?
Often yes, but fitment and function depend on the socket, housing, and electronics. Some LED replacements may need to match the original bulb base exactly, and some may not work properly without the right load or compatibility.
Why should I check the installed bulb before buying a replacement?
Because trim and lighting package differences can change the bulb type on the 2021 Chevrolet Tahoe. Checking the installed bulb helps confirm the correct size and avoids ordering the wrong part.