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Used for: Fog Light Bulb Front, Daytime Running Light Bulb
Used for: Fog Light Bulb Front, Daytime Running Light Bulb
Used for: Headlight Bulb High Beam
Used for: Headlight Bulb Low Beam
Used for: Back Up Reverse Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb Outer
Used for: License Plate Light Bulb, Tail Light Bulb Inner, Courtesy Light Bulb, Glove Box Light Bulb
Used for: License Plate Light Bulb, Tail Light Bulb Inner, Courtesy Light Bulb, Glove Box Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front, Side Marker Light Bulb Rear
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb, Map Light Bulb
Used for: Dome Light Bulb, Map Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This 2009 Buick LaCrosse bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part to the right socket before you buy. Whether you are replacing a headlight, tail light, dome light, or a small interior lamp, this page organizes the common bulb sizes for the 2009 Buick LaCrosse in one place.
Use the chart to compare each exterior and interior light location with its listed bulb type. The 2009 Buick LaCrosse can use different bulbs depending on the lamp position, and some lighting details may vary by trim, market, or body style. Checking by location makes replacement easier and reduces the chance of ordering the wrong bulb.
For best fitment, confirm the trim and lighting package on your LaCrosse before ordering, especially if your car has factory fog lights, daytime running lights, or a different rear lamp setup. Some positions may use halogen bulbs from the factory, while others may be changed to LED with aftermarket conversions, and LED replacements can affect brightness, color, and compatibility. If possible, remove the installed bulb and compare the base and markings before purchase, since the safest way to verify fit is to match the original bulb already in the vehicle.
The low beam headlight bulb size listed for the 2009 Buick LaCrosse is H11.
The high beam headlight bulb size listed for the 2009 Buick LaCrosse is H9.
The front turn signal light bulb size listed is 4157NA.
The parking light bulb size listed for the 2009 Buick LaCrosse is 4157NA.
The brake light bulb size is 3057R, and the outer tail light bulb size is also 3057R.
The rear turn signal light bulb size listed for the 2009 Buick LaCrosse is 3057.
The back up reverse light bulb size listed is 921.
The dome light and map light bulb sizes listed are 168 and 917.
The license plate light bulb size listed is 194 or 7441.
The glove box light and courtesy light bulb sizes listed are 194 or 7441.
The trunk or cargo area light bulb size listed for the 2009 Buick LaCrosse is 912.
Yes. The center high mount stop light is listed as LED, and some fog light and daytime running light setups may use H11 LED or H16 LED depending on the vehicle configuration.
Because trim and lighting package differences can change the bulb used in a given position. Comparing the installed bulb helps confirm the base, shape, and markings before you order.
Often yes, but fitment and performance can vary. Make sure the LED bulb matches the socket and is suitable for the housing, since some conversions may need additional compatibility checks.