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Used for: Fog Light Bulb Front
Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam, Headlight Bulb High Beam and Low Beam(with HID headlights), Headlight Bulb Low Beam
Used for: Headlight Bulb High Beam and Low Beam(with halogen headlights)
Used for: Back Up Reverse Light Bulb
Used for: License Plate Light Bulb, Map Light Bulb
Used for: License Plate Light Bulb, Map Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb
Used for: Vanity Mirror Light Bulb
This 2020 GMC Acadia bulb size guide helps you quickly verify the correct bulb by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, brake light, reverse light, or interior lamp, this page is organized to make fitment easier for the 2020 GMC Acadia.
Lighting on the Acadia can vary by trim, package, and market, so the same model year may use different bulbs depending on the equipment installed. Use the bulb chart for the exact position on your vehicle, and compare the listed bulb type with what is already in the housing before ordering replacements.
For the best fitment results, always confirm whether your 2020 GMC Acadia has halogen headlights, HID headlights, or an LED setup, because the headlight bulb type changes by configuration. Some aftermarket LED conversions may fit physically but still require the correct base, connector, or additional hardware to work properly. Trim and lighting package differences can also affect fog lights, daytime running lights, side markers, and interior bulbs, so checking the installed bulb before purchase is the safest way to avoid returns.
The headlight bulb depends on the headlight system. The chart lists 9012 for halogen headlights, D3S for HID headlights, and LED for vehicles equipped with LED headlight assemblies.
Yes. Trim level, lighting package, body style, and market can change the bulb type. Always match the bulb to the specific lighting position on your Acadia, not just the model year.
The low beam bulb listed for HID headlight setups is D3S.
The halogen headlight setup uses 9012 for the high beam and low beam function listed on the chart.
The back up reverse light bulb is 921.
The front turn signal bulb is 7444NA.
The rear turn signal bulb is 7440.
The parking light bulb listed for the 2020 GMC Acadia is 7444NA.
The license plate light bulb is listed as 2825 or 98.
The map light bulb is listed as 2825 or 98.
The dome light bulb listed for this model year is 12961.
The front fog light bulb options listed are H11 LED and H16 LED, depending on the vehicle’s lighting configuration.
Not always. If your Acadia came with LED lighting in a specific position, the assembly may not be designed for a simple halogen bulb swap. Check the exact lamp type before buying parts.
Yes. Checking the installed bulb is the best way to confirm fitment, especially on a 2020 GMC Acadia with optional lighting packages or previous aftermarket changes.