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Used for: Fog Light Bulb Front, Daytime Running Light Bulb(with halogen headlights)
Used for: Fog Light Bulb Front, Daytime Running Light Bulb(with halogen headlights)
Used for: Headlight Bulb High Beam
Used for: Headlight Bulb High Beam and Low Beam
Used for: Headlight Bulb Low Beam
Used for: Back Up Reverse Light Bulb
Used for: Daytime Running Light Bulb(with HID headlights)
Used for: License Plate Light Bulb, Dome Light Bulb, Interior Door Light Bulb
Used for: License Plate Light Bulb, Dome Light Bulb, Interior Door Light Bulb
Used for: Parking Light Bulb, Side Marker Light Bulb Front, Turn Signal Light Bulb Front, Turn Signal Light Bulb Rear
Used for: Stepwell Light Bulb, Glove Box Light Bulb, Trunk or Cargo Area Light
Used for: Stepwell Light Bulb, Glove Box Light Bulb, Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This 2011 Buick LaCrosse bulb size guide is designed to help you verify the correct bulbs by lighting position before you buy replacements. Whether you are changing a headlight, a brake light, or a small interior lamp, matching the bulb to the exact location is the easiest way to avoid fitment mistakes.
Because trim level, lighting package, and market can change the equipment on a 2011 LaCrosse, the bulb chart should be used as a position-by-position reference. It covers exterior, interior, and cargo-area bulbs so you can quickly narrow down the right size for your specific vehicle.
For best results, compare the bulb listed for your lighting position with the bulb already installed in the car, especially if your LaCrosse has different trim or an optional package. Halogen and HID setups use different parts, and some owners choose LED replacements for brighter output or longer life, but aftermarket conversions may need the correct bulb type, polarity, or additional adapters to work properly. Before ordering, check the existing bulb base and any markings on the old bulb so you can confirm the fit and avoid buying the wrong version.
The low beam headlight bulb listed for the 2011 Buick LaCrosse is H11. If your car has a different lighting package, verify the installed bulb before replacing it.
The high beam headlight bulb is H9 on the 2011 Buick LaCrosse. This is the standard high beam bulb size shown on the chart for this model year.
Some versions may use a D1S setup for the headlight bulb high beam and low beam, depending on the lighting package. That is why it is important to confirm the exact headlight system on your car before ordering.
The front fog light bulb listing for the 2011 Buick LaCrosse is H11 LED or H16 LED. The correct choice can depend on the original lamp housing and the type of conversion you are using.
For LaCrosse models with halogen headlights, the daytime running light bulb is listed as H11 LED or H16 LED. For models with HID headlights, the daytime running light bulb is listed as 3157.
The front turn signal light bulb and the parking light bulb are both listed as 3757A on the 2011 Buick LaCrosse.
The rear turn signal light bulb is listed as 3757A. This same bulb family is also used for some other front lighting positions on this model.
The rear side marker light bulb is listed as LED on the 2011 Buick LaCrosse. Since the chart identifies it as LED, check the exact lamp assembly if you are replacing the entire unit or only the light source.
The back up reverse light bulb is 921 on the 2011 Buick LaCrosse.
Those interior positions are listed with 2825 or 98 for the dome light, license plate light, and interior door light, while the glove box light, trunk or cargo area light, and stepwell light are listed with 194 or 7441. Always confirm the socket style if your vehicle has been modified or previously repaired.
The license plate light bulb is listed as 2825 or 98. Either size may appear depending on the exact lamp assembly or market configuration.
The vanity mirror light bulb is listed as 7065 for the 2011 Buick LaCrosse.
Use the lighting position first, then match it to the chart row for your car. For example, a headlight bulb is not the same as a fog light bulb, even if both are in the front of the vehicle. Trim and lighting package can also change the correct bulb.